FoamRush 6ft x 28ft x 28ft Upholstery Foam Cushion High Density - Firm

In this review the FoamRush 6' x 28' x 28' Upholstery Foam Cushion is evaluated as a practical replacement option for worn chair and bench cushions. The bottom line: it is best for anyone who needs a durable, high density square foam pad that keeps its shape under frequent use. The reviewer tested it for fit, firmness, and ease of customization and found the 1.8 density and 63 ILD compression deliver a noticeably firm yet supportive seat that recovers fully, making it a solid choice for heavy-traffic seating or outdoor cushion replacements.

Key Features

• High density build: The foam is formulated to balance support and comfort for seating that must resist quick wear in high-use areas.
• Certified quality: CertiPUR-US certification provides assurance the foam meets safety and performance standards compared to non-certified foam.
• Durability: With a 100% recovery rate and an expected 7-12 year lifespan, the foam holds shape and resists sagging under regular use.
• Measured firmness: The listed ILD/compression values explain how firm the cushion feels and why it does not sink excessively when sat upon.
• Easy to customize: The sheet cuts, glues, and stacks cleanly which makes it simple to trim or layer for a custom thickness or multiple projects.
• Wide application: Suitable for chairs, benches, wheelchairs, ottomans, RVs, boat seats, and DIY craft uses where firm support is desired.

Who It's For

The FoamRush foam works well for homeowners and DIYers who want to restore dining chairs, outdoor cushions, boat or RV seating, and hobby projects. It is aimed at people who prefer a firm seat and who will appreciate a product that is easy to trim and glue for custom sizes and layered builds.

Those who should look elsewhere include buyers who want a plush, sinking softness or who need a very precise pre-cut cover-fit out of the box; some customers reported mixed sizing expectations and the firmness is not for everyone. If ultra-soft cushioning or bespoke pre-cut upholstery forms are required, consider a softer ILD or custom-cut service with exact dimensions.

Pros & Cons

Pros

• Firm, supportive feel that resists compression and returns to shape due to high density and 100% recovery.
• CertiPUR-US certification gives confidence in material safety and consistent quality.
• Versatile for many projects and simple to cut, glue, or layer for custom thicknesses.

Cons

• Firmness is mixed in customer feedback; some find it almost too firm for casual seating.
• Size expectations can be inconsistent for a few buyers, so measure carefully before ordering.

Specifications

Product type	Upholstery replacement foam sheet
Dimensions	6 in x 28 in x 28 in
Density	1.8 (high density)
Compression / ILD	63 ILD (listed compression value)
Recovery	100% recovery rate
Certification	CertiPUR-US certified
Expected lifespan	Designed to last 7-12 years in heavy use

Our Verdict

The FoamRush 6' x 28' x 28' high density foam is a reliable, long-lasting option for anyone restoring chair cushions or building firm seating pads. It is good value for applications that demand durability and shape retention, but buyers who prefer a softer sink should choose a lower ILD. Overall, it suits heavy-traffic or outdoor uses where firmness and certified quality matter.

Frequently Asked Questions

Can this foam be trimmed to fit a custom seat?
Yes; the foam is easy to cut with common tools and can be layered or glued to reach the desired thickness.

Is this foam suitable for outdoor cushions?
Customers report successful outdoor use; the foam is durable, though it will need a waterproof cover for exposure to moisture.

How firm will the cushion feel?
The cushion is firm due to its 63 ILD compression rating and high density, so expect a supportive, less-sinking seat.