Carpet Underlay Buying Guide: Thickness, Density and Materials
Published 2026-10-11. Practical guide for factory buyers sourcing PU foam scrap and rebonded foam.
Carpet underlay is a specification purchase, not a commodity. For carpet factories and flooring distributors, the difference between a workable order and a costly one usually comes down to thickness, sheet format, and material source. This guide focuses on the product and the checks to run before you confirm a purchase order. It also covers related material streams and logistics details to confirm with us.
What the Product Is
We supply 10mm thick foam carpet underlay as our carpet underlay product. It is listed on the carpet underlay product page and is intended for carpet applications. For flooring distributors, it is a format to quote against carpet specifications; for carpet factories, it is a foam layer that must match the line, the carpet construction, and the installation method.
Rebonded PU foam is a related material stream. Its uses are replacement of virgin foam, furniture padding, farming mattress, domestic mattress, and modular autoparts. If you need rebonded PU foam for one of those uses, tell us the application. For this product, review the carpet applications page and confirm the format with us.
Thickness: Ask Us for Current Available Thicknesses
The listed product is 10mm thick foam carpet underlay. If your project needs a different thickness, do not assume a standard size list. Ask us for current available thicknesses and confirm which thicknesses can be produced for your order. Thickness is only one variable; two products at the same thickness can differ in material and sheet format.
When you inquire, state the target thickness and the acceptable range for your line. If you are buying for distribution, list the thicknesses your customers ask for most often. If you are buying for a carpet factory, connect the thickness to the carpet backing and the installation process.
Density: Rebonded PU Foam Range 50-300kg/m3
Density is a rebonded PU foam specification. Rebonded PU foam density ranges from 50kg/m3 to 300kg/m3. That is a wide band, and the right point depends on the application and handling requirements. Ask us for the current available specification for the exact product quoted.
For rebonded PU foam, ask us to state the density in kg/m3 for the exact material quoted. If you are comparing two rebonded PU foam offers, compare density first, then sheet format. Keep scrap grade density separate from rebonded PU foam density. Foam scrap grades can have their own density data. Mixing the two numbers leads to wrong specifications.
Materials: Rebonded PU Foam, Scrap Grades, and Binders
Rebonded PU foam is made with recycled PU foam and is 100% recyclable. It supports shape cutting, which is useful when you need pieces cut to a drawing rather than supplied only in standard sheets.
The wider foam material range includes several scrap grades and related products. Foam scrap grades include Grade AA (around 5% skin or 0-skin versions, density 20-30kg/m3), Grade A (5% skin and 15% skin versions), and Grade B (around 15% skin). Colors are black, white, or mixed. The range also includes memory visco (memory foam) scrap, shredded foam, PU binder, filter foam scrap, Dali skin foam, Hi-Poly shoe foam scrap (50-60 density), crushed fabric bra foam scrap, and old used foam.
If you buy scrap as a separate input, specify the grade, skin percentage, color, and density. If you buy this product, specify the sheet format. Related products such as shredded foam and PU binder may be part of the broader supply discussion, but they are not the same specification as the product. Confirm what is quoted before you compare offers.
Sheet Formats and Logistics Planning
Ask us for sheet formats before you finalize the order. We will confirm the format and packing method. For rebonded PU foam orders, shape cutting is available when you provide drawing requirements.
The Alibaba-listed supply ability of 5000 Ton/Tons per Month applies to the listing, not to confirmed output. Ports are Shenzhen or Guangzhou, China. Share your destination port so we can quote the correct logistics route.
Quality Checks for Carpet Factories and Flooring Distributors
Run a simple checklist before you commit. Confirm the product format, current available thickness, sheet format, and packing method. Confirm color and grade if you are buying scrap separately. Confirm the logistics plan and written quotation. For carpet factories, check the product against the carpet line and the installation method. For flooring distributors, check that the format matches the stock sizes your customers order. If you need a broader buying checklist, use the carpet underlay buying guide. Keep the specification in writing so the quoted thickness and format are not changed by assumption.
Common Sourcing Mistakes
- Specifying thickness only. Confirm sheet format and packing as well.
- Assuming one thickness is the only option. Ask us for current available thicknesses for other projects.
- Confusing scrap grade density with rebonded PU foam density. Grade AA scrap is 20-30kg/m3; rebonded PU foam is a separate material specification.
- Leaving sheet format and packing to the last minute. Confirm them before quoting.
- Ignoring logistics. Share your destination port and packing preference.
- Not stating the application. State the end use in the inquiry.
What to Tell Us When You Inquire
Send the application, target thickness (for example, the listed thickness or another available thickness), sheet format, order quantity, destination port, packing preference, and payment terms. Payment methods include T/T, L/C, D/P D/A, MoneyGram, Credit Card, Western Union, and Cash. Contact Ms. Vicky Chen, Sales Manager, at the contact page, [email protected], office tel 0086-0769-81805003, mobile 0086-15875576145, or WhatsApp 15875576145. Dongguan Fungbillion Furniture Material Co., Ltd. is located at ChaoLang Industrial Zone, Chashan Town, Dongguan City, Guangdong, China.
Tell us your industry and the grade you need
Send your product type, target density and order volume — Ms. Vicky Chen and the sales team will work out the right foam material with you.
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