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Spec Homes

It is common for self/home contractors of spec home projects to contact Sing Core for Eco-friendly insulated building materials that are lightweight and stronger than steel pound for pound.

You might be surprised that many spec homes have been built completely out of Sing Core materials, everything from the foundation to the roof and everything in-between including the doors and interior furnishings. All built to last for centuries.

You might think of Sing building materials as panels (which is understandable because our true flat panels are most popular around the USA and the world) that are used mostly as doors, floors, walls and roof panels.

Avid true green spec home builders and Sing supporters use a combination of Sing Panels and Post and Beam for every conceivable portion of the home build and even the furniture inside the home.

Spec Home Builders Partner with Sing Core

If you are a qualified Spec Home Builder, Sing Core has the expertise to assist you utilizing this patented Eco-friendly building material that will last for centuries in many – if not all – components of your spec home.

Qualified Spec Home Builders deal manufacturer direct, eliminating the middlemen, so that you can have complete control of your design build spec home and do it yourself.

Insulated Wood Floors

See Floors

Wood Interior Walls

See Walls

Insulated Doors of Any Kind

See Doors

Insulated Garage Doors

See Carriage Doors

Insulated Wood Roofing Material

See Roofs

Sing Beams Stronger than Steel

See Sing Post and Beam

Insulated Sound-deadening Ceilings

See Sing Ceilings

Exterior Insulated Wood Walls

See Sing Walls

Exterior Insulated Walls with Window Cut Outs

See Window Cut Outs

Don’t forget the furniture

See Sing Furniture

Eco-friendly Sing Core Spec Homes

See Sing Homes


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Sheds Insulated Storage Sheds DIY Shed

Lowes Home Improvement Sing Core pre built torsion box panels Pro DeskWe are excited to find that Lowe’s Home Improvement is making Sing Core available to everyone who is enthusiastically looking for better ways to build than by traditional building methods. Building an insulated shed could be your best Summer Building Project.

There are many applications for using patented sing Core that could be used for practically anything.

DIY Insulated Lowe’s Sheds

There are many sheds and shed kits available today by visiting your local Lowe’s Home Improvement. If you are seeking something a little more upscale, at the very least, you would want insulation to protect the items being store inside your shed.

Lowe’s has many options available for buying and building 2×4 framed sheds and insulation packages to modify the structures that come in many types of sheds and offer many options in how to build a shed.

Lowes Home Improvement Online
Lowes Sheds Lowes Home ImprovementLowes Home Improvement Lowes Sheds

Alternate Insulated Lowes Storage Sheds

Now offering Sing Core sandwich panels via the Pro Desk, Lowe’s has increased the options available to the savvy shed builder who may be interested in an uncustomary approach to building a shed that is better than any other shed and can safely be built in less time that sheds built by standard building methods; and almost anyone can do it themselves.

Do It Yourself Lowe’s Insulated Sheds

For the do-it-yourselfer standard Sing Sandwich panels are just as easy and convenient to use as 4×8 sheets of plywood for your insulated shed project with a number of advantages. Using Sing Sandwich panels, you can build your shed:

1 Fast (Sing Sandwich is one of the fastest methods known to build a shelter)
2 Frameless (you don’t need a 2×4 frame, the frame is built in to the panel itself)
3 Insulated (no need to frame or install as insulation is built-in, mold & mildew-free)
4 Lightweight (a fraction of other wood-based building materials)
5 High strength (660 PSI, stronger than steel pound for pound)
6 Weatherproof (Sing Sandwich panels are rot resistant, exterior treatment is optional)
7 Portable (your insulated shed is easily moved or transported via truck or trailer)
8 Door (avid DIY aficionados can make their own insulated door with the material cut out for the opening)

Lowes home improvement build an insulated shed DIY Sing Core

4 x 8 insulated shed made of torsion box panels

How to Build an Insulated Shed with Lowe’s

We don’t provide you with specifics on how to build your insulated shed when working with Lowe’s but we can assure you that you will find the staff helpful and the inventory more than adequate to provide you with all the ideas and materials you need to make your insulated shed dreams come true.

The only commonality that we find in all of the insulated shed designs that we see our fans building is that most prefer to use two standard Sing Sandwich panels together for a three-inch thick insulated floor base. Other than that, your imagination can run wild.

Make Your Own Insulated DIY Sheds

Making your own insulated DIY sheds can be fun and exciting for you and your neighbors. We encourage you to share your insulated shed building with us and our neighbors and friends also.

In fact, if you send us pictures of your Lowe’s insulated shed project and we use them on our web site, we will give you $50 to use on your next visit to Lowe’s Home Improvement or any other way you like. Think of it as a small token of our appreciation for you sharing your commitment to making the world a better place using Eco-friendly Sing Core.

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800 Square Foot Buildings No Permit Required

No building permit required for 800 square foot tiny house buildingWe are so excited to see municipalities and counties all over the nation are beginning to loosen the grip on residents who desire to build their own projects on their own properties.

Sing Core’s national headquarters is located in McCleary, Washington and we’re proud to live in Grays Harbor County that has recently embraced lightening the restrictions on property owners to build their own 800 sq. ft. structures without a permit. Many areas are joining the revolution to allow residents to build structures independently.

An 800 square foot structure is a reasonably-sized structure that could offer a comfortable living environment, like a tiny house.

Let your local government know about the trend of NO building permit required for 800 sq ft building. 

Change your county building code if this is not available for you.

For instance your 800 square foot structure could have a 20 ft x 40 ft footprint, like this one:

20x40 800 sq ft house plan

5x20 ft Galvanized Steel Magnetic Sign Display Panels Lightweight High Strength Guaranteed true flatThis 10 foot tall walled structure could be built using 5 ft x 20 ft galvanized steel panels with door and window cutouts in less than an hour by a few people (using a rapid assembly method). Seem like too little time? Okay, add a second story in another hour, even a third story.

Building a two-story house in two hours using two people could only be possible using patented Sing Core technology.

Check local building codes in your area. Most counties or municipalities allow the do-it-yourself builder to construct a structure of a minimal size without a building permit. Other options (as recognized by many tiny house enthusiasts) include building your structure on a trailer; as mobile structures – like a tiny house on wheels – are exempt from building codes.

Don’t Be Framed

Building structures with Sing Panels does not require traditional framing because the structure is built into the wall. You can build a solid structure with 1 inch thick wall panels without any structure framing due to Sing Core’s:

2 men standing on lightweight heavy duty glavanized steel magnetic panel 20 ft spanHigh Strength

Patented Sing Core provides a natural vertical wood grain torsion box/foam composite that is so strong that it is recognized by high-tech industries as the strongest affordable lightweight building material that is stronger than steel pound for pound and able to reach long spans without heavy substructures.

Building with this patented technology is advantageous for so many reasons, like:

easy to handle lightweight high strength metal honeycomb panelsLightweight

Sing Panels are easy to handle because they weigh so much less than other building materials. One person can easily handle a standard 4×8, and two can easily maneuver a 5×20 – not because of the weight – due to the awkward size.

Assembly of storage unit in trade show display lightweight high strengthRapid Assembly

There are so many options in methods of assembling your Sing Panels in your building project, but there are extremely fast options. For instance, you could have your Sing Panels pre-cut for all window and door openings and have quick connecting cam-locks installed for quick and solid assembly. See Video of a 70 ft trade show display erected single handedly in less than 1 hour.


Every Sing Panel is packed wall-to-wall with insulation and can achieve R-values of 6.5 per sq. inch. There’s no need to insulate your pre-insulated wall panels; plus you get the added benefit of extra privacy and protection from the environment due to inherit sound-deadening qualities.

Save on Construction Costs

Save up to $5000 – or more – just on construction costs due to being lightweight, easy to assemble and not having to require time-consuming 2×4 framing. Your contractor can save both time and money. No need to frame, plus you can have all door and window openings pre-cut and ready to build.

weatherproof exterior metal equipment enclosure made of metal honeycomb panelsWeather Resistance

Your reinforced structured insulated panels can be pre-fabricated using any extreme-weather resistant exterior material you desire. Most popular for rapid pre-fabricated structure building includes fiberglass, marine-grade ply and galvanized steel, which offer weather resistance without applying additional siding.

High Performance

Long recognized for inventing the only high-precision true flat building material that stays flat, your Sing structure will remains straight and true, not like wood framing and other materials. Only sing Panels can affordably achieve these high marks.


Sing Panels are available in nearly any flat exterior building material including, but not limited to, any wood species, aluminum, concrete, FRP, HPL, Kevlar, metal, plastic, stainless steel, etc… Just about anything you could desire. Plus, you could have one material on the inside facing, and another on the outside. Example, galvanized steel on outside and plywood on the inside.


We’re all about helping to make your design dreams come true. We can modify Sing components to your specifications and meet the structural durability requirements of your project. As we are well-known world-wide for building large oversize doors that can be guaranteed for 50 years and will not warp, bend, twist or rot using this technology; this is our specialty.

DIY / Do It Yourself

Though we only work with high-end architects, engineers, contractors and designers, we fully support the tiny house movement and offer materials to individuals who have the knowledge equivalent to a contractor for DIY structures.


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Make Your Own High Tech Door Core

SingcoretabletopGuaranteed: Less labor, less material cost to build the best lightweight, high-strength (any type of) door using patented Sing Core technology and you can be licensed to manufacture it yourself.

Inventor Peter Sing would like to talk to your owner/CEO about partnering with your door company to manufacture his patented door core at your facility.

You’ve probably heard about Sing door core’s ability to create super-large doors that are lightweight, high-strength (stronger than steel), true flat and guaranteed to stay flat for 50 years. This is why the most high-end millworks and corporations, like NASA, Boeing and the United States Military branches depend on us out for their large insulated door applications.

We are looking for a door company, like yours, to manufacture the patented door core. This would allow you to manufacture doors using this advanced technology with very little expense. We will teach you everything you need to know and Mr. Sing will guide you through the whole process and help set-up your factory.

If you’re interested, Contact Us



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How to Finish

Sing Core is in the business of providing our clients with the best materials to accomplish the most complex high end solutions especially in terms of lightweight, high strength and economical.

Many clients come to us because they have heard that we make the best – insert and end product. And it is true that many of the best end products are made with Sing Core, it doesn’t necessarily mean that Sing Core created the end product.

In most cases, Sing Core supplies the high-end craftsmen, millworks and contractors with the base material to accomplish their objectives. The detail and finish-work is completed by someone else, and in some cases the end-user completed the finishing. In special circumstances, we can have your end product finished by our trusted third-party partners on your behalf.

To help those do-it-yourselfers in search of information on how to finish your panels, we offer this simple DIY guide for finishing ideas.

How To Paint steel, Aluminum, Plastic, and Acrylic

This guide will cover prepping and painting of steel, aluminum, plastic, and acrylic plus more. I’m sure some people will think some of the steps are not necessary and quite extensive compared to some guides. Yes, this may be true but I am writing this guide to help get a quality finish from your case, not something that looks like the neighbor painted in his homemade cardboard paint booth with a 99 cent can of paint from the dollar store… Click to View


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Storage Units

Sing Core helps you design, create and build some of the most energy efficient, lightweight, high-strength, long-lasting storage units with very little time, labor and/or equipment thanks to this revolutionary advancement in the building material industry.

storage-unitsThe popularity of storage units are on the rise. Whether you are a commercial self storage operation looking to expand your existing storage facilities or a home owner looking for an alternative to garage clutter by building your own storage unit outbuilding, Sing Core has the best storage unit solution.

Why not build your own storage unit on-site for the cost of what you would pay in monthly rental charges for renting storage unit space?

Sing Core is the superior resource for the do-it-yourselfer who wants a high-end storage unit without having to hire a huge construction crew to make it happen. With patented Sing Panels, your storage unit can be assembled quickly and easily with minimal construction skills.

Your Sing Core storage units will have all the benefits that come with this lightweight, space-age building material that is stronger than steel.

Don’t Be Framed

Traditional storage unit structures are based on 2×4 or 2×6 frame designs which are heavy, bulky and have the instability of lumber that has varying degrees of straightness. While Sing Core’s patented vertical grain torsion box core is the structure and requires no other lumber frame and will outperform any wood-framed structure in terms of straightness, flatness, strength and is pre-insulated for energy efficiency and maintenance-free longevity.

Choose Your Own Exterior and Interior

Your patented Sing Core panels can be pre-fabricated to your specifications. You decide what you want on either side of your panels. For instance, you can have luan plywood on the interior surface and aluminum on the exterior surface, or just about any flat building material that you might desire inside or out.

Your Sing Core Storage Unit is Guaranteed

Unlike other storage sheds, patented Sing Core is guaranteed to be the strongest, lightweight, affordable Eco-friendly building material, including FREE REPAIR FOR LIFE. In the event that any panel (or number of panels) is damaged so as to compromise the structure of your storage unit, Sing Core will repair the damaged panel(s) free (even if it’s your fault).


This Sing storage unit was built in 1 day

How to Build Your Own Storage Unit

Simply count up the number of Sing Panels (which can be any size, but come in standard 4 ft. x 8 ft. panels) needed for your storage building and have them delivered to your location (shipping cost is inexpensive due to being so much lighter weight than other building materials).

Make sure the floor platform of your DIY storage unit is built off the ground. Assemble your walls then add the roof panels. (Remember, no frame is necessary when building with Sing Core.) So quick, so easy, so fast.










Reclaim Your Valuable Space

When you build your own storage unit, you are able to reclaim the space that might be less accessible in your garage. This maximized outdoor storage increases your storage space without affecting your carport. And because you can determine which materials you use, you can decide whether you want a wood shed or metal outdoor shed.

You will be proud of your new Sing storage shed that is better than any other shed in town.


How to BuyMetal Composite Sing Core panels are true straight, light and strong.

To order Sing Storage Units submit an order form either by email,, or print and fax it to: 360.495.4585. We’ll provide a quote within one business day. If you have questions, please contact us.

Easy Ordering

All we need to know is the length, width, thickness and what you desire on the exterior, and your custom specialty panels are made to order. Getting a quote for your specialty product, is easy, thanks to our simple online order system.

Bulk Discounts

If you’re looking for a bargain price, remember, the more you order, the less expensive your total order will be per piece. Quantity and wholesale inquiries are encouraged. Feel free to contact us for more information. Click here for Closeout specials.

Fast turnaround: In you’re in a rush, only Sing Core can be custom made within 24 hours and is proudly manufactured for you in the USA.

Fast delivery: Any thickness and almost any length, less than 5 ft wide, can be made with in 48 hours if it is rush order.

SINGCORE Storage Units are easy to order. You may choose from our stock panels or order custom sized panels. Our price is based on the length, width, thickness, and quantity. Submit a Work Order by fax or email, and we will give you a quote within one business day. If you have a tight budget, give us a call, we might have an alternative solution tailored to your needs.


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Quick Easy Sound Proof Rooms Set Up Tear Down

Sing Core is in the business of helping solve the challenges that face a variety of situations across many industries. Due to the innate sound-deadening qualities of patented Sing Core, there is increasing number of inquiries and applications of interest to designers, architects, high-end audiophiles and homeowners.

Among the various business segments we (Sing Panels) are often invited to join our business clients as they fabricate their own trade show booths on-the-fly. Rather than relying on us (or third-party designers) they simply obtain Sing Panels as their raw materials, then build and decorate to their heart’s content.

At a trade show you want to look your best and sometimes it is important to have a professionally isolated area where you can interact with your clients without the distraction of the ongoing tradeshow noise and distractions.

You could spend top-dollar for your Sing Trade Show Booth, or simply do it yourself. All you need to do is to order the number of Sing Panels that you need to create your booth, i.e., a 12 x 8 trade show booth can be easily constructed our of seven Sing Panels (three for the back and two for each side). Your trade show booth can be assembled quickly, easily and quietly with an electric screwdriver, and can be assembled in minutes singlehandedly.

Occasionally, at an increasing rate of late, our tradeshow people have been using Sing Panels as their structure material for building on site sound proof rooms that are built rapidly at low cost.

Here are the DIY methods that we’ve seen used by some of our clients build the sound proof disposable conference rooms, or presentation theaters:

Quickly assemble a number of 4 ft. x 8 ft. x 2 in. (with ¼ in. luan facing) Sing Panels into the desired room configuration.

You will need a door for access. There are 3 ways to do this:

  1. Order 1 Sing Panels with a door (could be a Sing Sound Proof Door) built-in
  2. Cut a Sing Panel and insert your own door on site
  3. Hinge an entire Sing Panel as an access point

Using this method you will be able to assemble your private area within minutes.

To increase sound crossover and privacy, add panels as floor and ceiling then consider how to sound proof a room:

The Inexpensive, Quick and Easy Way to Sound Proof Your Area

To sound proof your area, you could get Sing Sound Panels which are normally more expensive and used in permanent installations, or you could use the methods used by many of our tradeshow attendees and save thousands and thousands of dollars:

Once you have your basic Sing Panel structure assembled (including floor and ceiling) add as many layers of sheetrock to the exterior (and interior, if desired) as needed to obtain the level of sound-proofing desired.

Just have a local lumberyard deliver the sheetrock that you need, affixing them to your existing Sing Core structure.

“How many layers of sheetrock can the Sing Panels hold?”

Remember, Sing Panels are not only lightweight and sound-dampening but they are also strong. Even without a frame (you don’t really need one because of the built-in torsion box frame) Sing Panels are many times stronger than a rinky-dink 2×4 frame and in fact are stronger than steel (see comparison). So, if you wanted to add a layer of lead for increased sound deadening, your Sing Panel frame can easily handle the extra weight.

An impressive way to increase the sound-deadening qualities of your structure is to alternate layers of sheetrock with sing panels. For example, the basic structure might be your Sing Panel core with sheet rock on both the inside and outside. On the outside and another later of Sing Panel add another layer of sheetrock to achieve the desired result.

You can also add polystyrene, dynamat. polyurethane foam, acoustic textileperforated acoustical soundboard or sound proof foam material to either the exterior or interior of your structure, or both.

Disposable Theater and/or Conference Room

Disassembly of your Sing Core theater or conference room is as easy as reversing the direction on your screwdriver.

Many of our economy sound-proof trade show people simply disassemble their areas, leaving the sheetrock behind for the convention center to dispose of (sometimes they even leave the Sing Panels behind, too, but most of them take the panels with them, if they can).

Perfect for the Do-It-Yourselfer

Think of the time and money you can save by using Sing Panels as your core structure material, then have no fear in adding as much material as you want to bring your acoustic dream to life. Sing Core is strong enough to bear the weight of the heaviest sound-proofing materials, without fail. Don’t be framed, or shy, when using Sing Core.

Here are some do-it-yourself videos to assist you on your road toward having your own sound room:

Acoustic Panels – What & Where

How to BuyMetal Composite Sing Core panels are true straight, light and strong.

To order Sing Sound Proof Rooms submit an order form either by email,, or print and fax it to: 360.495.4585. We’ll provide a quote within one business day. If you have questions, please contact us.

Easy Ordering

All we need to know is the length, width, thickness and what you desire on the exterior, and your custom specialty panels are made to order. Getting a quote for your specialty product, is easy, thanks to our simple online order system.

Bulk Discounts

If you’re looking for a bargain price, remember, the more you order, the less expensive your total order will be per piece. Quantity and wholesale inquiries are encouraged. Feel free to contact us for more information. Click here for Closeout specials.

Fast turnaround: In you’re in a rush, only Sing Core can be custom made within 24 hours and is proudly manufactured for you in the USA.

Fast delivery: Any thickness and almost any length, less than 5 ft wide, can be made with in 48 hours if it is rush order.

SINGCORE Sound Proof Rooms are easy to order. You may choose from our stock panels or order custom sized panels. Our price is based on the length, width, thickness, and quantity. Submit a Work Order by fax or email, and we will give you a quote within one business day. If you have a tight budget, give us a call, we might have an alternative solution tailored to your needs.

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Carriage Doors

Applications -> Building Components -> Doors -> Carriage Doors

How to Design Order and Build your Carriage Door

unfinished carriage doorSing Core is the top choice of discriminating home owners and high-end users making the switch from overhead doors to carriage doors who demand elegance and superior performance.

Sing Core Carriage Doors are imbued with unique characteristics that separate them from any other commercially available standard carriage door in the world. For instance,

Sing Core Carriage Doors are available in outswing (standard), inswing, overhead, barn door and sliding door configurations to meet your individual requirements and specifications.

Sing Core offers a variety of surface materials to suit your individual tastes or to match the appearance of your classic design.

Due to their superior strength and load capacity in comparison to carriage doors made of other materials, Sing Core Carriage Doors are keenly suited for extreme weather conditions including temperature and humidity variations, storm and hurricane resistance*.

Regardless of your choice of exterior material (i.e. wood or steel), windows can be designed, cut and installed to match the overall appearance representation that you desire in your new garage door.

carriagedoorsSing Core Carriage Doors are the perfect adornment for your garage, studio or barn, giving you an unsurpassed aesthetic appeal while being functional and extremely structurally superior.

Each Sing Core Carriage Door is a precision garage door that is handcrafted in the USA and custom built to your specifications.

While capturing the beauty of century old carriage doors, Sing Core Carriage Doors are a fusion of old world technology and space-age technology to create a carriage door that is brilliantly adaptable, functional and will last for centuries.

Save Money

Sing Core Carriage Doors are the economically sound buyer’s choice for so many reasons, but have many ways to save you money. For instance,

Transportation and installation of your carriage doors is easier and less expensive due to weighing so much less than others.

Sing-Core-Carriage-DoorsBeing lightweight also means less strain on the hardware and structure with normal use.

Our pre-insulated carriage doors save you heating and cooling costs of your interior space.

The high-strength, true flat and long-life attributes, means less maintenance costs over time.

Sing Core Carriage Doors are competitively priced in comparison to other carriage doors. Why not take advantage of owning a superior end product, with all the added value of Sing Core without having to compromise your expectations, and are available in large, oversized doors.

Sing carriage doors vs. other overhead garage doors

Many people are making the change from overhead garage doors. Ask your overhead garage door company about Sing Carriage Doors.

Take advantage of this new technology increasing sales and profit by increasing value-added benefits and features, while decreasing costs and overhead.

  1. rob-Bi-fold-1-openFunctional Sing Core enables the door manufacturer to build a similar or better than a high-end entrance door. Sing carriage doors are fully insulated, sound deadening, true flat, air tight, lightweight and super strong (backed by a 10 year structural guarantee).
  2. Replace Overhead Doors Many people are switching over from overhead doors to more elegant carriage doors, especially when converting a garage to a work shop, office space or even an extra guest room. Sing carriage doors can be air tight, effectively securing your space for heating in the winter and air conditioning in the summer. Sing Core is made of 90% foam and structure torsion box grids. Sing doors do not expand or move like solid wood carriage doors. This prevents the door from expanding due to the moisture and temperature change which can lead to air leakage or becoming too tight to close the door securely.
  3. Visually Impressive Compared to other garage doors and other carriage doors, sing carriage doors are true flat which will be easy to add design molding, various surface skins and/or textures, design and color detail by adding wood trim or molding. The resulting door is beautiful, enhancing the structure with unparalleled exquisite detail that remains close and tight over time without sagging even after years of use.
  4. Low Cost Carriage doors are the choice of high-end users and come with an equally high price tag. In comparison to overhead garage doors, customers will often choose the Sing carriage door because they cost less, yet are high-end, more attractive and function better than other garage doors. Once you consider the added cost of metal overhead doors, hardware and opener, Sing carriage doors are much less expensive. Our garage door companies reduce their costs while delivering more for their clients without sacrificing profit margin.
  5. Air tight carriage doors guaranteed lightweight high strength true flat long lifeEasy to Build and Install Sing Core carriage door is lightweight, strong, true flat and works with regular hinges making it easy to move and install. When we first introduced Sing carriage doors, we attracted many DIY end-users who embrace the do-it-yourself philosophy that is becoming more of a trend. Highly successful results were enjoyed by these non-wood working trade professionals. If they can do it, so can you.
  6. Easy to Market Obviously the high-end design and appearance of Sing Carriage doors are the key to engaging homeowners, clients and customers visually. But when you throw in all the added benefits, like, increased functionality, higher quality, sleek and styled appearance, increased lifespan, then you surprise them with a price-tag that is a fraction of a metal overhead or other type of garage door… it’s an easy decision.
  7. Wide Variety of Surface Material Options Sing carriage doors have the largest selection of surface materials to accommodate any look, feel or design of any project. For instance, more popular door skins for Sing carriage doors include: wood, plywood, moisture resistant MDF, aluminum, stainless steel, FRP (fiber reinforced plastic), etc…
  8. Less Maintenance Compared to regular wood doors, Sing Core doors stay true flat, which prevents the moisture from soaking into the skin, like other solid wood and plywood that are likely to generate surface cracks, causing water to get into the inner layer of wood fiber, even when using proper sealants. Sing Core doors do not crack ensuring longer life for sealant/coating compared to any wood door, so you don’t have to worry about how to fix garage door. See characteristics, including rot resistance.
  9. Quality Assurance  Sing Core is commonly used for extremely high-end, demanding jobs; this is why we offer the best structure warranty in the industry. We are making the largest doors in the door industry and boldly back them up with a 10-year warranty.
  10. Custom Size Sing carriage doors are available in any size. Custom sizing (even large, oversize) in any thickness, most any skin option, specialized insulated foam to accommodate your specifications, along with a variety of design molding. With Sing carriage doors, the sky’s the limit.

How to Build a True Flat Long Lasting Carriage Door

Rot-resistant-wood-panels-will-not-warp-twist-crack-or-cup-for-long-lasting-true-flatnessWood-based carriage doors are exposed to a variety of weather conditions, glaring sun, wind and rain and it is important to keep the surface primed and coated to make sure that it does not crack while exposed to weather. Sing carriage doors prolong functionality of surface treatments due to being made with patented Sing Core’s torsion box structure that holds the wood surface to maintain a forever flat surface without twisting or cracking.

You may further weather-protect – even for withstanding the most severe weather conditions – by integrating other material into the surface of your Sing carriage door. Surface skins of aluminum, FRP or stainless steel will not crack like natural wood or plywood to prevent compromise of your Sing carriage door.

If you like the look of solid wood but seek high-performance and longevity, you can use Sing aluminum as your true flat carriage door’s substrate, you will be able to maintain straightness of your doors making them less likely to crack due to movement cause by expansion and contraction of the wood surface material.

See how Sing Panel’s torsion box structure prevents surface crack because of the patented Sing Core’s unique characteristics. To keep your carriage door true flat is a challenge for solid wood or even plywood. Sing Core and Sing Panel master true flat technology for very high-end doors requiring less that 1/16 inch deflection which is more costly.

Sing carriage doors far exceed the AWI industry standard or ¼ inch deflection to be considered flat.

Imagine: No more overhead garage door repair needed.

Though Sing Core Carriage Doors can be customized to any specification, 
an example of our standard Carriage Door would be:
      • 2 inches thick w/composite sandwich composition
      • Can feature any standard exterior overlay
            o Wood veneer (variety to specs)
            o Solid Wood stave (any available wood species)
            o Plywood
            o Moisture resistant MDF
            o Fiberglass / FRP
            o Aluminum
            o Stainless Steel
      • Built-in insulation
      • Paint grade
      • Standard height/widths (8 ft. or less)

Sing Core carriage doors are distributed by the most prestigious garage door companies.

How to BuyMetal Composite Sing Core panels are true straight, light and strong.

To order Sing Carriage Doors submit an order form either by email,, or print and fax it to: 360.495.4585. We’ll provide a quote within one business day. If you have questions, please contact us.

Easy Ordering

All we need to know is the length, width, thickness and what you desire on the exterior, and your custom specialty panels are made to order. Getting a quote for your specialty product, is easy, thanks to our simple online order system.

Bulk Discounts

If you’re looking for a bargain price, remember, the more you order, the less expensive your total order will be per piece. Quantity and wholesale inquiries are encouraged. Feel free to contact us for more information. Click here for Closeout specials.

Fast turnaround and delivery.

SINGCORE: Any thickness and almost any length Carriage Doors are easy to order. You may choose from our stock panels or order custom sized panels. Our price is based on the length, width, thickness, and quantity. Submit a Work Order by fax or email, and we will give you a quote within one business day. If you have a tight budget, give us a call, we might have an alternative solution tailored to your needs.

*Customer will need to perform lab tests to certify hurricane rating for local code compliance.

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Building Your Sing Log Home

Step 1: The Foundation

The logs should be stacked as near as possible to your foundation, and if you have a slab foundation, it’s best to keep them right on it where they’re most easily accessible.

Your foundation should have 1/2″ or 5/8″ threaded rod extending from the J-bolts sunk in the concrete at approx. 3′ on center. Instruct whoever is doing your concrete work to make sure the rods are installed in the center of the stem wall, as they should extend through the center of the log. Install treated 2×8(or other size appropriate) boards using a hole saw attachment to your drill to drill holes to accommodate the threaded rod, around the perimeter of the foundation.

Lengths of flashing bent at an angle over the outside of the treated boards to form a drip edge and termite guard are installed over the boards before laying the walls. This is called the sill plate, and the logs will be placed on top of it.



Step 2: Installing the First Layer of Sing Logs

Once the foundation is prepared…

Select the logs for the first layer and place them parallel to their permanent locations. Remember that with the butt and pass method, butt joints are staggered, and alternate from course to course. When making room for door space, simply cut the log to allow enough space.

Place the first log with its end reaching to the edge of the foundation making sure that it is aligned in the proper position. Outline the upper face of the log where the tie down plate goes to hold the log to the foundation (use the plate as a guide for tracing, making sure that the rod slides through the aperture in the center). Use a router to notch out the space you traced for the tie down. Make sure it is at least 1/2″ deep to fit the thickness of the plate. If you find that blocking in between log halves interferes with the threaded rod, simply knock it out or cut around it. If you knock it out, you may have to replace it in another location by toe nailing it. If you are not using Olyscrews in your project, simply repeat this process every 3 layers, applying adhesive every course, until you reach the top plate.



Remove the first log you want to install, and apply two beads of glue to the sill plate where the wood will have contact with it. Return the log, and place the tie down plates where you have notched out for them, with the threaded rod protruding from the aperture. Tighten nuts with wrench, as tight as you can. When butting logs together, it is important that this vertical seam be as tight as possible. Use plenty of adhesive, and you may also “key” this joint in the hollow space with a piece of 3″ (or double 2×4) wood blocking where the seam is, or use rigid foam insulation. You may also decide to chamfer the butt ends to provide an alternate appearance using a router or planer.

Step 3: Installing Additional Layers of Sing Logs

With the first layer done…

Place the logs for the second course parallel to their intended locations around the perimeter. Keep in mind again that just as the corners alternate with each layer, so should the butt joint seams. Align double tongue-and-groove joints, and squeeze a minimum of two (amounts vary according to log size & engineering conditions) thick beads of adhesive onto the top face of the log (outside of tongue) upon which you will install the first log of the second course. You should have at least one bead on both sides of the hollow space. Make sure that there is enough glue to squash down and form a tight seal when you place the next log on top. If you are using the recommended Franklin Titebond adhesive, keep in mind that in wet weather it may not fully cure for possibly 2 weeks because it’s water based, however it is very user health friendly and the screws pin the logs in place until the glue is cured. Make sure that the tongue on the bottom log is aligned correctly with the groove of the top log. If you find the tongues and grooves are fitting a little too snug, simply use a mallet and a piece of wood blocking to tamp them into place.


Drive an Olyscrew through a pre-drilled hole. It doesn’t matter which of the two wall sides you begin on, just make sure the screw is driven straight down to ensure solid contact is made all the way through the log. Be sure that it doesn’t hit the tie down plate or another screw below it. If at any time the screw threads or part of screw is exposed back it out and try again. No part of the screw should be visible (check the inside of the log to be certain the screw hasn’t gone through the curved part and is showing). Drive the screw until its head is countersunk and flush with the surface. Don’t be alarmed if the log rises further down its length, you will correct it when you drive the next screws. Be aw a leveling device, backing it out or driving it in tighter until its level. Avoid driving the screws into knots. After you gain a sense for the procedure and how it should look, you can are that the screws may alter the leveling somewhat, but you can actually employ the screw check for plumb and level every 2 or 3 layers.

Step 4: Windows, Doorways, and Trusses

When working around openings for windows and doors…

Logs may partially reach into the opening to be cut out later if you’d like to speed up construction, but make sure you avoid the corrugated staples in the spacers as you cut. You may also want to let one course extend entirely through an opening as this has been found to reduce leveling complications, and cut it out after completion. Make sure that the course of logs that completes an opening, the header, is continuous over that opening.


Windows using Sing Window Frame…

The window /frame unit can be pre-assembled and finished at the factory, ready to be fastened to the log walls rough opening. This saves labor for on-site framing, bracing, leveling and installing windows.


Interior Walls…

Interior walls could be constructed with 10×5 Interior Sing Logs, or conventional 2x framing. Various finishing materials could be applied to the 2x framing, such as Sing Paneling or gypsum wall board.



Trusses or other types of roof structures can be installed onto Sing Log walls in the conventional way. Insert double 2×4’s into the cavity of the top layer Sing Log to form a solid bearing surface for the roof structure


Step 5: The Second Floor

If you have a second floor or loft, you can hang it directly off of the wall. Nail or screw 2×8 or 2×10 nailing strips onto the wall, and attach joist hangers to the strips.

Place the joists in the hangers and proceed with the deck, which can be a variety of materials including plywood, card decking, or other.


Step 6: Finishing

Electrical Outlets…

The easiest way to go is to use the remote system for your outlets they are inexpensive and require no wiring. Another option is to run your wiring along the floor and up the corners and cover with molding.

Outlets for lighting and electrical connections are relatively simple. Pick the log which will contain the outlet before installing it, and using your circular saw (or reciprocating saw) cut out the outlet from the interior wall half of the log, starting from the top. This is more easily done if your outlets are placed horizontally. Wiring should be prepared beforehand, so you can simply pull it through the hole to connect to the socket or fixture later.

Since the logs are staggered, there should be continuous space to weave the wiring inside the hollow space. You may also “fish through” after the wall is completed, use conduit, or have all outlets in the floor and ceiling.



Use a router or chisel to remove the tongues from the section of log which will become part of a corner. Exterior corners should be foamed in with spray insulation (common types like “Big Stuff” or “Dap” are readily available from your local hardware store) and covered with 1″ cedar trim up the entire vertical lengths of both sides. Use sufficient caulking around the seam between the logs and the trim, as well as where the trim boards meet to ensure a perfectly tight seal.



Once your walls are erected, and before windows and doors are installed, you should apply a stain to the outside facings. A porous, at least slightly tinted stain is recommended to prevent moisture and UV damage. It should preferably be designed specifically for log homes. We recommend Sikkens� Cetol� exterior and interior finishes as they have been thoroughly tested and proven to be superior.



For any log to log, or wood to wood caulking requirements, we suggest using Sashco Logbuilder. It has proven very easy to apply, extremely flexible, and long lasting.



Recommended adhesives include Franklin titebond solvent free construction adhesive, PL Premium, PL 400, and 3M 5230. We prefer the Franklin Titebond because it is water based and requires no protective gloves etc. during application, and very easy to use and clean up.