High Density Polyurethane Antimicrobial Foam (Firm) 5" x 24" x 80"
SKU: 285F2480
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High Density Polyurethane Antimicrobial Foam is the best choice when you need a high-quality, long-lasting and dependable foam ideal for heavy-use applications. Its density means it will provide excellent support while still delivering on comfort, making it ideal for high-traffic seating cushions (such as couches and sofas), benches, cabin seating and sleeping berths, automotive seating and certain outdoor cushions. Its antimicrobial properties help prevent the growth of mold and mildew.

For outdoor use, Antimicrobial High Density foam can be used, and silk film should be wrapped around the foam to help keep moisture out. Also use an upholstery fabric that has high water resistance or can be treated with a waterproofing solution.

High Density Polyurethane Antimicrobial Foam will typically last up to 12 years. It has a firm stiffness, a density of 2.8 pounds per cubic foot and a foam IFD (Indentation Force Deflection) of 60 pounds.

The Sailrite® Blade Foam Saw expertly cuts through a full range of foam types. A standard electric kitchen knife can also be used, though the results won’t look as professional. To glue two pieces of foam together, Sailrite recommends using spray adhesive. Foam can also be glued on the sides to make a wider piece or layered to make thicker cushions. If layering foams with different stiffness levels, the firmer foam should be the bottom layer.

Please Note: Sheet size may vary up to 2 inches in length and 1 inch in width.

Important:Items are compressed for shipping, we recommend unrolling as soon as possible. Compressed foam takes up to a week to regain its original size and shape. Allow foam to fully decompress before cutting or using in a project.


Sale Unit: EA
Length: 80"
Width: 24"
Thickness: 5"
Foam Density: 2.8 pounds per cubic foot
Foam IFD: 60 pounds
Special Features: Antimicrobial/Biocide
Foam Material: Polyurethane
Foam Firmness is a measurement of the foam’s softness. Indention Force Deflection, or IFD, is the pressure in pounds needed to compress a 50 square inch circular plate 25% of the way into the foam.

At a Glance

Foam Usage: Frequent
Foam Uses: Automotive Seating, Home Decor Cushions, Mattresses, Patio Cushions, Pontoon Seats, Powerboat Seats, Salon Cushions
Foam Firmness: Firm



A. 5"
B. 24"
C. 80"


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Types of Foam for Cushions & Upholstery

In this helpful video, we will walk you through all the different types of foam Sailrite has to offer. Understanding the properties and uses of different foam types will help you know which one is right for your DIY project. The four types of foam we will cover are high density, medium density, open cell (Dry Fast) and a closed cell foam. After watching this video, you will be able to select the correct foam for your cushion or upholstery application.

Gluing Foam With Foam Lock Spray Adhesive

We test the holding strength of adhesive spray and see how it holds up when used on different foam types. This spray offers quick tack and high coverage while providing a very strong bond.

Cutting Foam With the Sailrite® Blade Foam Saw

This high-quality foam cutter is a great tool for both serious DIYers and small upholstery shops. It delivers smooth, clean cuts through many types of foam for professional-looking results every time.

Cutting Foam With an Electric Kitchen Knife

This video shows you how to use a standard electric kitchen knife to trim your foam to size, including some tricks to achieving a sharp cut line and using weights to keep the foam in place while cutting.


Overall Rating : 4.93 14 Reviews

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Debra Canellis
Verified Purchase

GREAT! EASY! QUICK! What more can one ask for?

The foam surpasses expectations, was easy to work with, received quickly and will be considering more going forward.

Verified Purchase

Very Comfortable

Great quality, as with everything I purchased from sailrite!

Floyd and Jeanne Poupore
Verified Purchase

Excellent Support and Easy to Cut for Size!

Replaced original stuffing in out door patio chair cushions for neighbor who loves the results. The chairs are "better than new" and have great support he exclaimed!

Betsy Maurer
Verified Purchase

Just what I wanted.

This is exactly what I was looking for for my outdoor patio furniture. It is FIRM but COMFORTABLE. Love it.

Russ Cordiner
Verified Purchase

Your product was exactly what we were expecting. There was a couple faint smudges on one of our two pieces. They are going to be perfect for our window seating. Thank you. Russ and Sherry

Kathryn A Patterson
Verified Purchase

I ordered the foam to cut it down into three sections to replace my favorite sofa sections I st on all the time. This came so fast upon my order and it’s perfect!!!! I love it!!!

Lori Kinsey
Verified Purchase

Using as a day bed on couch

I ordered the extra firm high density foam to lay on the couch as mate has a bad back. It’s very firm, perfect for us.

Anandkumar Patel
Verified Purchase

Loved this product. It’s firm and comfortable. Would recommend if one likes firm sofa.

Aubrey Andre
Verified Purchase

Excellent use for indoor boat cushions

Janet Papinaw
Verified Purchase

I have ordered this before and have been very satisfied. I just needed more.

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