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Closed Cell Foam

Black, white, and various shades of grey sheets of closed cell foam

Closed cell is a type of foam in which the “cells” are closed and tightly pressed together, contrasting with the open, interconnected cells of the open-cell, or traditional polyurethane foam variation. This means that water rolls off the foam rather than passing through it. With higher density and greater pressure resistance, this malleable material comes in a variety of forms. From the rigid polyethylene (cross-poly) foam to the less dense EVA foam, and the squishy feel of Flotex, closed-cell foam is a versatile material offering a tight seal and enhanced stability.

Closed Cell Foam Comparison

Eva FoamPolyethylene Foam (Cross-Poly)Flotex FoamVolaraPolyethylene Foam (By the Yard)
SIZESheet (40x80), or custom cutSheet (40x80), or custom cutSheet (56x84), or custom cut60" wide, sold by the yard60" wide, sold by the yard
THICKNESS1/8", 1/4", 1/2", 3/4", 1", 1.5", 2", 3", 4"1/8", 1/4", 1/2", 3/4", 1", 1.5", 2"1/8", 1/4", 1/2", 3/4", 1", 2", 4"1/8", 1/4", 1/2"1/8"
COLOR
  • Gray
  • Charcoal
  • Cream
  • Charcoal
  • White
  • Cream
FEELMedium-FirmVery Firm/RigidSoft/SquishySoft/SmoothMedium-Firm
DENSITY2.0 lb/ft³5.8 lb/ft³3.8 lb/ft³2.0 lb/ft³2.0 lb/ft³
Flotex FoamVolara
SIZESheet (56x84), or custom cut60" wide, sold by the yard
THICKNESS1/8", 1/4", 1/2", 3/4", 1", 2", 4"1/8", 1/4", 1/2"
COLOR
  • Cream
  • Charcoal
  • White
FEELSoft/SquishySoft/Smooth
DENSITY3.8 lb/ft³2.0 lb/ft³
Polyethylene Foam (By the Yard)
SIZE60" wide, sold by the yard
THICKNESS1/8"
COLOR
  • Cream
FEELMedium-Firm
DENSITY2.0 lb/ft³

Custom-Cut Closed Cell Foam

Our versatile closed-cell foam options don’t stop at sheets and pads. Select from the custom shapes below that work best for the job at hand. After clicking your desired shape, enter the dimensions to generate a price quote. For shapes not shown here, click on the Pattern Shape below.

NOTE: Due to the nature of this specialized foam, we cannot cut custom sizes in some dimensions. We are unable to cut cylinders and wedges deeper than 2 inches.

  • Select a Custom Square or Rectangle Closed Cell Sheet
  • Select a Custom Wedge or Triangle Closed Cell Sheet
  • Select a Custom Bar Stool (Circle) Closed Cell Sheet
  • Select a Custom Window Seat Closed Cell Sheet
  • Select a Custom Bolster or V-Berth Closed Cell Sheet
  • Select a Custom Pattern Shape Closed Cell Sheet
  • Select a Custom Square or Rectangle Closed Cell Sheet
  • Select a Custom Wedge or Triangle Closed Cell Sheet
  • Select a Custom Bar Stool (Circle) Closed Cell Sheet
  • Select a Custom Window Seat Closed Cell Sheet
  • Select a Custom Bolster or V-Berth Closed Cell Sheet
  • Select a Custom Pattern Shape Closed Cell Sheet

Select a Closed Cell Foam Type

Eva Foam

Firm but rubbery, this is great for protective gear and outdoor uses, including:

  • Helmet padding
  • Surfboards
  • Exercise mats

Polyethylene (Cross-Poly)

Rigid with very little give, this dense, compression-resistant foam is ideal for:

  • Packaging
  • Knee pads
  • Industrial applications

Flotex

Squishy and medium firm, this closed-cell foam works for products like:

  • Boat cushions
  • Yoga mats
  • Life preservers

Volara

Featuring a more squishy texture, this material is commonly used for:

  • Bag linings
  • Insulation for hot tubs
  • Acoustic insulation

Buy Foam the Way You Need It

FoamOrder allows you to purchase foam in the form that works best for you. From closed-cell foam sheets and rolled material to custom cuts in any shape, we offer plenty of ways to fulfill your foam needs. Contact our design consultants for your prototype or other product questions.

Looking for Something Else?

What is closed-cell foam?

Closed-cell foam is a type of foam material that has closed cells, which means the cells are filled with gas and not connected to each other. It is denser and more rigid than open-cell foam, and has a higher R-value, making it a more effective insulation material.

What are some common uses for closed-cell foam?

Common uses for closed-cell foam include insulation for walls, roofs, and foundations, packaging materials, gaskets and seals, flotation devices, and athletic equipment.

What is the R-value of closed-cell foam insulation?

The R-value of closed-cell foam insulation can range from R-6 to R-7 per inch, depending on the density of the foam.

Can closed-cell foam be used in outdoor applications?

Yes, closed-cell foam can be used in outdoor applications. It is water-resistant, durable, and provides excellent insulation, making it ideal for outdoor furniture cushions, flotation devices, and boat seats. Its dense structure prevents water absorption, helping it withstand harsh weather conditions and prolonged moisture exposure.

What is the difference between low-density and high-density closed-cell foam?

Low-density closed-cell foam is less rigid, lighter, and has a lower R-value, meaning it provides less insulation. It’s often used in applications where flexibility and ease of handling are important. High-density closed-cell foam, on the other hand, is more rigid, heavier, and has a higher R-value, offering better insulation and durability.

What are the advantages of using closed cell foam?

The advantages of using closed-cell foam include high R-value, moisture resistance, durability, soundproofing, versatility, pest resistance, and fire resistance.

How long does closed cell foam typically last?

Closed-cell foam can last up to 20-30 years depending on the application and environmental conditions it’s exposed to.

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Closed Cell Foam Sheet

Closed Cell Foam Sheet

Dimensions: Width: 40 in, Length: 80 in, Thickness: 0.5 in

Availability: In Stock

Price: $53.61

Customize your own dimensions

Closed cell foam, measuring 1/2 x 40 x 80, is a type of foam in which the “cells” are closed and tightly pressed together, making it water-resistant and highly dense.