Best 1.8 Density Foam Cushions for Upholstery Projects
For upholstery projects that call for 1.8-density foam, compare the cushion’s dimensions and firmness rating as well as its density. The GoTo Foam 2-inch sheet is a versatile option for longer, thinner cushions, while FoamRush’s 7-inch square cut suits projects needing a thicker seat. AK Trading offers a 2-inch sheet with a stated 44 ILD rating, and Foamy Foam provides a compact 5-inch square. The right choice depends on your cushion cover’s measurements and how firm you want the seat to feel.
| Product | Best For | Dimensions | Firmness Information |
|---|---|---|---|
| GoTo Foam 2-inch | Long, shallow cushions | 2 x 24 x 72 inches | 43 ILD |
| FoamRush 7-inch | Thick square seats | 7 x 26 x 32 inches | 63 ILD |
| GoTo Foam 1-inch | Thin padding layers | 1 x 24 x 72 inches | 44 ILD |
| AK Trading 2-inch | Home or commercial seat repairs | 2 x 24 x 72 inches | 44 ILD |
| Foamy Foam 5-inch | Compact, thicker cushions | 5 x 24 x 24 inches | 44 ILD |
GoTo Foam 2-Inch Upholstery Cushion
This 1.8-density foam sheet measures 2 inches thick, 24 inches wide, and 72 inches long. Its listed compression rating is 43 pounds, making it a slightly lower-ILD option than the other 2-inch sheets in this selection. The product is made in the USA and described as CertiPUR certified.
Best for: DIY upholstery projects that need a long, relatively thin piece of foam. It was selected for its 72-inch length and clearly stated 1.8 density. Choose it if the sheet dimensions suit your pattern and you want a 43 ILD option. Its 2-inch thickness may not suit a cushion cover designed for a substantially deeper insert.
FoamRush 7-Inch Firm Foam Cushion
FoamRush lists this cushion at 7 inches high, 26 inches wide, and 32 inches long, with 1.8 density and 63 ILD compression. The product description says it is CertiPUR-US certified and intended for high-use applications. It also states a 100% recovery rate and estimates a 7-to-12-year service life; these are product claims, and actual results can depend on use.
Best for: A thick chair or replacement seat where the cover accommodates these dimensions. It was selected for buyers who want 1.8-density foam with a firmer 63 ILD rating rather than the 43–44 ILD options here. Avoid choosing it based on thickness alone: check all three measurements before ordering.
GoTo Foam 1-Inch Firm Sheet
This GoTo Foam sheet measures 1 inch by 24 inches by 72 inches. The listed density is 1.79, close to the requested 1.8, and the compression rating is 44 pounds. The listing also identifies it as made in the USA and CertiPUR certified.
Best for: Thin replacement padding or projects where a 1-inch layer is specifically required. The long sheet can be useful when cutting several smaller pieces from one length. It was selected as a lower-profile alternative to thicker foam in the list. Its limited thickness makes it a poor match when the project needs a deep, standalone cushion.
AK Trading 2-Inch Seat Replacement Foam
AK Trading’s upholstery foam measures 2 inches thick, 24 inches wide, and 72 inches long. The listing specifies 1.8 density and 44 ILD, and describes the foam as CertiPUR-US certified and made in the USA. Suggested projects include sofa, chair, and bench seat replacement for home or commercial furniture.
Best for: A long sheet for furniture seat repairs when the project calls for 2-inch thickness and 44 ILD firmness. It was selected because its dimensions and specifications are easy to compare with the GoTo Foam 2-inch sheet. Its fixed 24-by-72-inch footprint may require cutting to fit the furniture.
Foamy Foam 5-Inch Square Cushion
This cushion is 5 inches thick and measures 24 inches by 24 inches. Foamy Foam lists 1.8 density and 44 ILD compression, describing it as suitable for seat, couch, and bench cushion replacement. The listing says the manufacturer cuts foam in multiple thicknesses and sizes, although availability may vary.
Best for: A compact square cushion that needs more depth than the 2-inch sheets provide. It was selected for its useful middle-ground thickness and clearly stated density and compression rating. Check your cover dimensions carefully: the listed 24-inch square size may not fit a non-square or differently sized cushion.
Buying Guide: How To Choose 1.8 Density Foam
What do density and ILD tell you?
Density and ILD describe different foam characteristics. Density is the listed foam density; ILD, or compression rating, indicates how much force is associated with compressing the foam. The products here range from 43 to 63 ILD, so a shared 1.8 density does not mean they will feel equally firm. Compare the actual rating along with the intended use.
Which dimensions should you measure?
Measure the cushion cover’s interior length, width, and depth rather than relying on the old insert alone. Match the replacement foam to the available space, accounting for the cover’s shape and how snugly it fits. A long sheet can be cut for multiple or irregular projects, while square cuts may simplify a single seat replacement. Confirm dimensions before ordering.
How thick should a cushion be?
Choose thickness based on the cushion cover and the seat design. A 1-inch piece is suited to thin padding applications, while 5- and 7-inch options are intended for deeper inserts. A thicker piece is not automatically a better fit; foam that is too deep can be difficult to insert or may change the cushion’s profile.
Should you prioritize a certification or a firmness rating?
Use the listed certification information as one comparison point, then check density, ILD, size, and project requirements. Several products identify a CertiPUR or CertiPUR-US certification in their descriptions. Certification does not replace checking that the cushion dimensions and firmness match your needs.
Frequently Asked Questions
Is 1.8-density foam suitable for replacement cushions?
These listings describe 1.8-density foam for upholstery and cushion replacement projects. Suitability depends on the cushion’s dimensions, firmness needs, and frequency of use.
Is higher ILD foam firmer?
ILD is a compression rating used to compare firmness. Among these options, the 63 ILD FoamRush cushion has a higher listed rating than the 43–44 ILD products.
Can upholstery foam be cut to size?
Foam sheets can be cut for many DIY projects, but the supplied dimensions determine how much material is available. Plan cuts carefully and measure the cushion cover before selecting a sheet.
Which option is best for a thin cushion?
The 1-inch GoTo Foam sheet is the thinnest product in this comparison. Choose it only if the project calls for a low-profile layer.
Do all 1.8-density cushions have the same firmness?
No. The listed ILD ratings vary, and the products also differ in thickness and dimensions. Compare those details rather than selecting by density alone.