Accessories & LinksHere are some handy links to manufactures of fasteners and assessors to be used with our sing honeycomb tradeshow, door and museum panels. |
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Veneer Systems – DIY Veneer materials, tools and instructions to help you with veneer projects. Norse INC– Cam locks, and other fasteners for easy assembly and disassembly of your Sing Honeycomb Panel system. Johnson Hardware Manufacturers of Professional Grade Sliding, Folding and Pocket Door Hardware. National Door Industries, INC. Door fasteners, hinges, window frames and other accessories. Barn Door Hardware – Hinges, locks and other assessors for use with our Sing Honeycomb panels. SouthCO – Suppliers of hinges, fasteners, and everything else you need to complete your project. |
Warranty
TRUE FLAT GUARANTEE
All composites including (but not limited to) Sing Core and aluminum (other materials may be added to the composite material) are guaranteed to be true flat and warranted to stay true flat under normal operation and in the form and function of the specified purpose and under the agreed upon conditions at the time of the creation of the material subject to the terms of our Limited Lifetime Warranty.
LIMITED LIFETIME WARRANTY
Sing Core products are warranted against defects in material and workmanship, and against rotting and decay for as long as you own and live in the Home in which the product was installed, provided that (i) it is installed without alteration and in accordance with applicable building codes and (ii) installed and caulked as specified by Sing Core’s installation instructions (iii) if exterior components are painted, the paint must have a LRV of 57 or higher.
The terms of this Limited Warranty excludes (i) weathering or discoloring of the unfinished material and (ii) warping or failures which are the result of or involve stress caused by localized application of heat, movement of building or building components, or expansion/contraction of building or building components.
TRANSFERABLE WARRANTY
The Warranty on the Sing Core unit is transferable by the original purchaser to one subsequent purchaser for purchaser’s personal residence provided Sing Core receives the Warranty Transfer Certificate within thirty (30) days after the date of transfer of ownership, and provided such notice is accompanied by a check or money order in the amount of $50.00 per home.
WARRANTY CONDITIONS
No warranty herein covers damages resulting from improper installation, abuse, accident, negligence, abnormal or unreasonable use (including failure to provide reasonable and necessary maintenance), improper or insufficient handling, storage, damage resulting from fire or lightning, windstorms, earthquakes, wind-borne objects, strain applied to the unit by movement of the building, inadequate provision for expansion or contraction of framing members, installation in ships or vehicles, installation outside the Continental United States, seal failure (if the seal has been subject to immersion in water), acts of God, any other components, parts, glass and labor provided by other parties, exposure to fire, corrosive fumes, condensation damage or any events or actions beyond the control of Sing Core.
This lifetime limited warranty does not apply with respect to (1) condensation damage due to high humidity or high vibration; (2) breakage of glass (other than clear glass).
The terms of this expressed warranty excludes failures due to damage due to freight carriers, common carriers, private transportation or any other means of transportation or handling after shipping from Sing Core.
The procedure for obtaining performance of the obligations of this warranty is as follows: if you believe your entry door to be defective, contact the contractor for inspection. If the contractor determines the Sing product or parts thereof to be defective, the manufacturer at its exclusive option will repair; provide a new product or part of a product after having determined that it does not conform to the limited warranties contained herein. The manufacturer reserves the right to discontinue or make changes in any of its products. If the products covered by this warranty are not available, the manufacturer shall have the right to substitute a product that is of equal quality or value. The manufacturer will ship the replacement product or part to the nearest authorized dealer and the purchaser must pay for any and all labor necessary to install such product or part and for the transportation from the nearest authorized dealer to his/her residence.
Any claim must be accompanied by a copy of the contract evidencing purchase of the Sing Core products.
SING CORE SHALL NOT BE LIABLE TO PURCHASER FOR CONSEQUENTIAL DAMAGES, SUCH AS, BUT NOT LIMITED TO, DAMAGES OR LOSS TO OTHER PROPERTY OR EQUIPMENT, LOSS OF USE, OR CLAIMS OF SERVICE INTERRUPTION, FOR BREACH OF ANY WRITTEN OR IMPLIED WARRANTIES ON ITS PRODUCT.
PURCHASER’S EXCLUSIVE REMEDY SHALL BE THE REPLACEMENT OF DEFECTIVE FINISH, COMPONENTS, OR PARTS, ALL AS PROVIDED HEREIN. IN ANY EVENT, THE LIABILITY OF SING CORE WITH RESPECT TO ANY CONTRACT, OR ANYTHING DONE IN CONNECTION THEREWITH SUCH AS THE PERFORMANCE OR BREACH THEREOF OR FROM THE MANUFACTURE, SALE, DELIVERY, RESALE, INSTALLATION OR TECHNICAL DIRECTION OF INSTALLATION, REPAIR OR USE OF ANY DOOR, COMPONENT OR PART COVERED BY OR FURNISHED UNDER THIS CONTRACT WHETHER IN CONTRACT, IN TORT, UNDER ANY WARRANTY, OR OTHERWISE, SHALL NOT, EXCEPT AS EXPRESSLY PROVIDED HEREIN, EXCEED THE PRICE OF THE DOOR, PART OR COMPONENT ON WHICH SUCH LIABILITY IS BASED.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to purchaser.
THIS WRITING CONTAINS THE ENTIRE AGREEMENT BETWEEN SING CORE AND PURCHASER. DEALERS, CONTRACTORS, APPLICATORS, OR DISTRIBUTORS OF SING CORE PRODUCTS HAVE NO AUTHORITY TO GIVE WARRANTIES ON SING CORE’S BEHALF, THAT ARE DIFFERENT FROM OR EXCEED THOSE LISTED HEREIN. PURCHASER SHOULD THEREFORE EXAMINE THIS WARRANTY CAREFULLY.
ALL WARRANTIES, WHETHER EXPRESSED OR IMPLIED, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO THE TERMS HEREOF.
Some states do not allow limitations on how long an implied warranty lasts; so the above limitations may not apply to purchaser.
This Lifetime Limited Warranty extends only to the Sing products which were originally installed in your Home or other structure originally and shall not be valid or enforceable if you cannot prove that the Sing products were so installed
Important Note: Keep your receipt of purchase and the receipt from the contractor who made the installation in your Home showing the date of installation and the address in a safe place.
This warranty gives purchaser specific legal rights and he or she may also have other rights which vary from state to state.
OBTAINING WARRANTY SERVICES
Before submitting a claim for warranty services, please see all of our help and resources available on our website. To obtain Warranty services, please call (360) 495-3577. Once a Sing Core representative validates your claim, an RMA or Return Merchandise Authorization will be supplied to you to include with the product to return. Items without an accompanying RMA will be withheld for up to 30 days, in which you will be notified on instructions for return and shipping. The shipping cost will be billed to you. Lack of payment will result in disposal of the withheld product without any duty to the customer or account.
Going Green
Environment & Economy Friendly
How is Sing Core “Green”, and why is it the most earth-friendly way to use both natural and man-made materials?
LCA (Life Cycle Assessment) provides a “cradle to grave” measurement of a product’s environmental impacts from raw material extraction and manufacturing through distribution, use, maintenance, and disposal. An obvious example is a coffee or tea cup made of Styrofoam compared to a coffee mug made of the same material but enclosed in a solid container. Solo cups are only used once then disposed of after use, unnecessarily filling our landfills. Imagine that the same Solo cup material put into a permanent coffee mug, could last ten years without being replaced. Sing Core protects the foam inside durable wood frameworks. LCA studies show that using wood is less harmful to the environment than steel or concrete in terms of embodied energy, global warming potential, air emissions, water emissions, and solid waste production. Sing Honeycomb core structure is made of 100% natural vertical grain wood veneer. This sets us apart from our counterparts who use only paper, particle board, aluminum, and plastic. Here at Sing Core, environmentally friendly construction is our mission.
Sing Core’s patented manufacturing process is the most efficient and economical way to make sandwich panels with a veneer torsion box core. The materials used in Sing Core sandwich panels use low energy to produce. The adhesive used in Sing Core panels is produced in a much more efficient way than the minerals for nails are mined. The veneer is made of scrap material from Washington mills and the foam core is 20% recycled.
Renewable
Sing Core’s structure is made of natural vertical grain wood veneer. This sets us apart from our counterparts who make cores with particle board. It requires energy to break wood down into pulp and reconstruct it into particle board. Veneer uses the natural strength of the wood fiber. Life Cycle Assessment studies show that using wood veneer is less harmful to the environment than steel or concrete in terms of embodied energy, global warming potential, air emissions, water emissions, and solid waste production. Here at Sing Core, environmentally friendly construction is our mission.
Non-Toxic
The structural glue and finishing stains that we use are all non-toxic and formaldehyde free.
Recycled
Our foam core has a recycled content of 20% and is 100% recyclable.
Energy Saving
Insulated, draft-free sandwich panels save your heating costs Sing has a long term stable R-Value. Sing Core panels assemble and install quickly, saving you man power and time.
Long Lasting
Sing torsion box sandwich panels are warrantied for ten years*, but may last much longer. This means Sing Core products will not need replacement or disposal for many years, cutting down on the resources used to manufacture panels. The foam used in Sing Core panels comes with a 20-year thermal performance warranty, dimensional stability, compressive strength, and water resistant properties. See instructions for repair and recycling.
This is a Sing Core overhead garage door panel compared next to a typical steel overhead garage door panel. Same size and thickness but as you can see the steel panel buckles with only a few pounds put on it while the Sing Core panel holds almost all of Inventor Peter Sings weight without any problem.
*See Warranty
Client List
Sing Product Customers
in Different Industries
(Click Customer’s Name to go to Customer’s Site)
Architect
- Pei Partnership Architects (I.M. Pei)
- Architecture In Formation
- Charles Brown Architect
- Greenpod Development
- Joseph Hurley
- V100modbox
Mill Work
- Aaron Carlson Architectural Woodwork
- Allegheny Millwork
- Artisan Millwork
- Buda Woodworks
- Deerfield Millwork
- Fairfield County Millwork
- Hamilton Fixture
- Herrick & White
- Millworks by Design
- Mission Bell Architectural Millwork
- Northwest Millwork
- O.B. Williams Co.
- On Site Woodwork Corporation
- Robert Shaw Mfg Co Inc
- Royal Custom Design
- Sielig & Jones Inc
- South Shore Millwork
- US Communications
- Woodmeister Master Builders
General Contractor
Commercial Design Build
Door Manufactures
- Caldwells
- Duratherm Door & Windows
- Emerald City Door
- Jonathon Dahl
- Lennoxwood
- McFarland Door
- Overhead Door
- Real Door
- Reilly Window & Door
Specialty & Technology
- Alaska Passages
- Birger Engineering
- Bose Corporation
- IBM
- JILA University of Colorado
- King Aerospace
- Lowe Mill Arts & Entertainment
- NASA
- PILR
- Prysm Inc
- Sculpture Conservation Studio
- Sigunik Studio
- Washington University in St. Louis
- Wine Country Gardens
- Varisport
- XCOR Aerospace
RV-Tiny House-Garage-Small Cabin
Connect Index
Applications -> Building Components -> Assembly & Connecting
Connecting Panels
How to Build Gallery
There are many ways to join Sing Panels
Simple Joining
The simplest and least expensive way to join sing panels is to join in any way according to your budget and/or expertise.
Due to Sing Panels being so straight and true it is easier to join panels together because they line up perfectly unlike other building materials.

In many cases, for instance, standard 4×8 panels can be nailed, glued or channel-joined quickly and easily with satisfactory results.
Other options for fastening panels may include cam locks (see examples left and right) that can be pre-installed, making assembly and joining easy and more secure.
- 4-way Connection
- X Connector
- Lightweight + Strong
- L & T Connectors
- X Connector 4-way
- T Connectors
Thru-bolt Joining
One of the most inexpensive and secure ways to join sing panels is by utilizing a simple nut and bolt connection method, especially, if the panels will be routinely or repeatedly assembled and disassembled.
Stainless steel nuts and bolts offer the safety and security when joining sing panels.
Biscuit Joining
In many cases, Sing Panels can be pre-configured for biscuit joining at your site of factory.
Especially for large projects, this enables Sing Core panels to be sent individually, reducing shipping and handling costs, for assembly at your facility or job site.
See images below for example of biscuit assembly of Sing Panels
- Biscuit
Joining With H Channel and H Molding
Embedded T-Slot Extruded Aluminum
In your choice of T1 (1 exposed slot) or T3 (3 exposed slots)
See: Sing T Slot Panels for more information.
Edge Banding
Unless specified Sing Panels do not ship edge-banded as 93% of our wholesale customers do their own edge-banding when finishing their Sing Panel.
Edge banding can take many forms from vinyl and plastic to wood and steel. Sing Panels are not intended for use as an un-banded product and may not qualify for our 50 year warranty if un-banded.
If your intention is to get the best, most long-lasting performance from your Sing Panels, feel free to take advantage of our free consultation to be guaranteed to achieve the results that you desire.
- Insulated metal roofing panels
Edge Banding Options Include:
T Molding

Here is an example of a large lightweight high-strength non-warping sliding door.
Note the steel T molding being installed to complete the door’s composition.
This door is guaranteed not to warp, bend, twist or otherwise fail due to being properly engineered and manufactured to exceed the specifications of this oversized architectural door.
T Molding
L Molding
Flat Molding
U Channel
Advanced Large Panels
Sing Core specializes in extremely large panels (up to 50 feet) that are extremely true flat and use our nearly seamless assembly process.
This is the most high-end and expensive process where we perform the highly specialized meticulous work in our factory yielding the high level of perfection that many of our most discerning clients require. See: our clients.
These must be manufactured in our plant to ensure accuracy with tolerances within thousandths of an inch and are more costly to ship due to the nature of their being larger than multiple panels that can be assembled on-site.
With the wide variety of applications for Sing Core panels, posts and beams, and equally diverse selection of fasteners are used in practical installations. Here are some of the most popular fastening systems used today:Norse Inc. LatchesNorse latches are designed for concealed installation in Sing Panels. Multiple configurations of latches and receivers are possible to suit many applications, and offer numerous advantages.Click Here for More Information …Knape & Vogt Manufacturing Company
Click Here for More Information … Pan American Screw An International leader of innovative threaded fastening solutions. Developers of the Draw Bolts and Zipbolt™ tight joint fasteners. They are constantly testing and developing fasteners that are easier, faster and less costly to use. Click Here for More Information … FastCap
Click Here for More Information … ITW Fastex The range of panel fasteners and plastic clips available from ITW Fastex is designed to fill most fastening requirements. The range of applications is wide from machines, appliances, and computers to recreational vehicles and point of purchase displays. Click Here for More Information … Shur-Lok fasteners and components are designed to satisfy customer requirements in two general application ideas: secondary structures, such as interior stow bins, lavatories and galleys, and primary structures, such as aircraft engines, engine pylons, landing gears, wings, gearboxes, transmissions and helicopter rotors–all critical applications. Click Here for More Information … Veck Fasteners Special and bespoke bonding fasteners. In addition to Veck Fasteners standard range of popular bonding fasteners, we provide purpose-designed special and bespoke bonding fasteners for customers who have specific requirements which cannot be fulfilled from our standard range. Click Here for More Information … Just to name a few… |
Fasteners and Anchors for Sandwich panels

CEL FASTENERS are innovative tools to anchor and attach and remove sandwich panels easily and quickly.
The advantages of CEL’s fasteners are:
- Possibility to attach and detach the panels quickly to carry out maintenance work or substitution
- Invisible bolts
- Precise positioning and multiple removals
- Quick assembly
- Cost reduction
Initially developed in compliance with to the needs of shipyards, this anchoring system is more and more used in different sectors:
- Shops’, hotels’ and trade fairs’ assembly
- Lifts
- Transport: buses, trains, vans, etc.
- Carpentry
- Furnishing

Implants
Solid wood implants can be placed anywhere inside your custom Sing Panels for attaching hardware or other anchoring, including lock blocks and the like.
Individual connection inserts can be specified at specific locations to meet all your connection method needs. These can include, potted inserts, Rivnuts, Helicoil inserts, blind inserts with tabs and spool inserts, just to name a few.
Liability disclaimer
The above data are to the best of our knowledge correct and are intended to give information about our products and their potential applications. No warranty is given or implied in respect of certain properties of the products or their suitability for a particular application. We reserve the right for technical changes without further notice. We guarantee impeccable product quality under our terms of sale.
Examples of Joining Sing Panels
Door Related Links
Applications -> Building Components -> Doors -> Misc. Door-related Links
General door hardware Links
National Door Industries, INC. Door fasteners, hinges, window frames and other accessories.
Barn Door Hardware – Hinges, locks and other assessors for use with our Sing Honeycomb panels.
SouthCO – Suppliers of hinges, fasteners, and everything else you need to complete your project.
Sliding/Pocket/Folding Door
Johnson Hardware Manufacturers of Professional Grade Sliding, Folding and Pocket Door Hardware.
The hardware hut: Door pocket – Door Pocket hardware
The Hardware Hut: Door Track – Tracks for pocket and sliding doors
The Hardware Hut: Hinges – hinges for folding doors
Direct Door Hardware: General Hardware
Door Tech Info
Applications -> Building Components -> Doors -> Technical Information
Door Panel Tech Info
Architectural Door Specifications
Handy Sing Core & Sing Panel Technical Information
Custom Door Skins
Custom Door Skins by Sing Core
Custom Door Skins Build your Way. Strong. Light. Straight.
Custom Door Skins let you design any door you want. And with Sing Core inside, your door stays flat, strong, and light. Because of this, architects, millworks, and contractors trust our panels for projects of every size. And yes, you can choose almost any skin you want.
To get pricing, visit our Estimate Page. It is fast. And it is easy.
Why Choose Custom Door Skins?
Custom Door Skins change the way doors perform. First, the skin sets the look. Then, the Sing Core inside gives you strength. And finally, the door stays lightweight, even at huge sizes. With Sing Core, your doors resist warping, denting, and twisting better than anything else.
So, your door lasts longer. And your project stays on budget.
Get your Custom Door Quote FAST!!!
Get your custom door quote fast with our easy estimate page. First, choose your size. Then, choose your skin. After that, send your details. As a result, you get the best price for your project. So, visit our estimate page now and start your door today.
Custom Door Skin Options
Below are the most popular Custom Door Skins. Every option works with Sing Core panels. And every panel can be made in almost any size.
1. Paint Grade Door Skins
Paint Grade skins are the most affordable. They are simple. But they are strong. And they are light. Because of this, they are perfect for builders who want a clean, smooth look. You can prime and paint them in any color.
2. Wood Veneer Door Skins
Wood Veneer skins create a rich, natural look. They are ideal for staining. And they offer a high-end finish. Even better, they stay flat because Sing Core supports them from within. Choose from many veneer species.
3. Solid Wood Plank Door Skins
Solid Wood Plank skins give a warm, real-wood feel. Yet they cost far less than thick solid-wood doors. These planks create a premium appearance while staying light. And therefore, they are great for extra-wide or tall doors.
4. Metal Door Skins (Steel or Aluminum)
Metal skins make ultra-strong doors. They are available in many thicknesses. And they can meet high fire ratings. You can even design bullet-resistant doors. Because Sing Core reduces weight, these metal panels stay easy to handle.
5. Fiberglass Door Skins (FRP)
Fiberglass skins are very durable. They resist weather. They resist dents. And they work indoors or outdoors. They are also low-maintenance, which makes them ideal for high-traffic areas.
6. Ceramic Door Skins
Ceramic skins are perfect for fire-rated and high-heat doors. And, thanks to the impact-absorbing Sing Core, they resist cracking better than standard ceramic panels. These skins offer both protection and style.
Why Custom Door Skins Work So Well with Sing Core
Every Custom Door Skin performs better with the Sing Core structure. The core is light. It is strong. It is stable. And as a result, your door stays straight for decades.
If the outer skin is ever damaged, you can repair it easily. The structure supports patching without sagging or distortion.
Door thickness ranges from 3/4 inch to no maximum thickness. Door sizes range from tiny cabinet doors to doors over 16 ft tall and 24 ft wide.
Door Types We Build
We use Custom Door Skins on four main structures:
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Solid Doors
Best for doors up to 4 ft by 8 ft. Very strong. -
Barn-Style Multi-Panel Doors
Large doors joined with strips or trim. Simple and affordable. -
Oversize Paint-Grade Doors
Seamless construction using biscuit joints. Smooth. Stable. Ready for paint. -
Wood-Grain Veneer or Plank Doors
The look of fine wood. The stability of Sing Core.
How to Order Custom Door Skins
Ordering is simple. First, choose your Custom Door Skin. Then choose your size. After that, send your dimensions. And finally, get your quote.
Because custom work varies, we price every panel by size and quantity. So, for fast pricing, visit our Estimate Page now.
Ready to Design Your Door?
Sing Core makes Custom Door Skins for every project. And with our lightweight, high-precision core, your door stays strong and straight for years.
Click below to get your estimate today.
Door Overhead
Applications -> Building Components -> Doors -> Overhead Garage Doors
It’s so easy to use Sing Panels to make beautiful doors of any size. For external use, we offer marine grade plywood. If you need strength, lightweight, insulation, and true flatness, Sing has the answer!
Patented Sing Core: We put a torsion box in the SIP panel to make it better. The other names for our panels include sandwich panel, honeycomb panel and lightweight panel.
How to Buy
Sing Door Panels 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.
Please call for distributor prices.
How to Build
Carriage Doors
Sliding Glass Doors & French Doors
Now offering panels for overhead doors. Lightweight and inexpensive, our panels work great for overhead doors.
Compared to other wood door companies our prices are less than half!
This is a Sing Overhead Garage Door Panel compared next to a typical steel overhead garage door panel. Same size and thickness but as you can see the steel panel buckles with only a few pounds put on it while the Sing Panel holds almost all of Inventor Peter Sings weight without any problem.






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