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Closed Cell Foam Sheets UK

Buy rigid cross-linked polyethylene (PE) closed cell foam sheets in AFP30 and AFP45 for protective packaging, case inserts, sealing, insulation and specialist fabrication. AFP30 is the 30 kg/m³ grade, while AFP45 is the denser 45 kg/m³ option for greater load-bearing support.

Order 100cm × 100cm or 200cm × 100cm sheets online from 3mm to 100mm thick with live pricing. AFP30 is available in black or white and AFP45 in black, with free cut-to-size service and free UK mainland delivery.

Shop AFP30 & AFP45 Free cut to size Compare grades Applications FAQs
Rigid cross-linked polyethylene foam

Buy Closed Cell AFP30 and AFP45 Foam Sheets

Buy rigid cross-linked polyethylene (PE) foam sheets in AFP30 and AFP45 from 3mm to 100mm thick. Order standard 100cm × 100cm or 200cm × 100cm full sheets online with live prices.

Quick answer

Choose AFP30 for a lighter 30 kg/m³ rigid PE foam with 62 kPa compression at 25% deflection. Choose AFP45 where the application needs greater load-bearing and impact resistance from the denser 45 kg/m³ grade, specified at 100 kPa compression at 25% deflection.

Closed Cell Polyethylene Foam Not Fire Retardant

Closed Cell AFP30 Foam Sheet

Data sheet

Rigid 30 kg/m³ cross-linked polyethylene foam for protective packaging, case lining, sealing, insulation and impact protection. Waterproof and non-absorbent, with WRAS approval for cold-water use. Available online in black or white.

Nominal density
30 kg/m³
Compression at 25%
62 kPa
Water behaviour
Waterproof / non-absorbent
Cold-water approval
WRAS approved
Black AFP30 closed cell polyethylene foam sheet
Price £11.78

10% off orders £170+

View all sizes and prices 20 prices

The table lists every size, thickness and price-affecting option with the exact standard unit price.

Sheet size Thickness Price
100cm × 100cm 3mm £11.78
100cm × 100cm 5mm £13.99
100cm × 100cm 10mm £19.99
100cm × 100cm 15mm £25.98
100cm × 100cm 20mm £31.98
100cm × 100cm 25mm £39.98
100cm × 100cm 30mm £45.98
100cm × 100cm 40mm £57.98
100cm × 100cm 50mm £69.98
100cm × 100cm 100mm £129.98
200cm × 100cm 3mm £14.99
200cm × 100cm 5mm £19.99
200cm × 100cm 10mm £31.98
200cm × 100cm 15mm £45.98
200cm × 100cm 20mm £57.98
200cm × 100cm 25mm £69.98
200cm × 100cm 30mm £81.98
200cm × 100cm 40mm £105.98
200cm × 100cm 50mm £129.98
200cm × 100cm 100mm £236.98

Colour does not change the price. The prices above apply to: Black, White.

Quantity pricing is calculated automatically for this range. A 5% foam-sheet quantity discount is included when the calculated line value reaches £150 or more.

Spend £170 or more in one qualifying order and receive an additional 10% off at checkout.

Higher Density Polyethylene Foam Not Fire Retardant

Closed Cell AFP45 Foam Sheet

Data sheet

Higher-density rigid cross-linked polyethylene foam for heavier protective inserts, industrial packing, structural gaskets, marine and outdoor use, and high-density insulation. At 45 kg/m³, it provides greater load-bearing and impact resistance than AFP30.

Nominal density
45 kg/m³
Compression at 25%
100 kPa
Water behaviour
Waterproof / non-absorbent
Max water absorption
≤1 vol %
Black AFP45 higher-density closed cell polyethylene foam sheet
Price £11.99

10% off orders £170+

View all sizes and prices 20 prices

The table lists every size, thickness and price-affecting option with the exact standard unit price.

Sheet size Thickness Price
100cm × 100cm 3mm £11.99
100cm × 100cm 5mm £14.99
100cm × 100cm 10mm £21.98
100cm × 100cm 15mm £28.98
100cm × 100cm 20mm £34.98
100cm × 100cm 25mm £44.98
100cm × 100cm 30mm £50.98
100cm × 100cm 40mm £64.98
100cm × 100cm 50mm £78.98
100cm × 100cm 100mm £146.98
200cm × 100cm 3mm £15.99
200cm × 100cm 5mm £21.98
200cm × 100cm 10mm £34.98
200cm × 100cm 15mm £50.98
200cm × 100cm 20mm £64.98
200cm × 100cm 25mm £78.98
200cm × 100cm 30mm £91.98
200cm × 100cm 40mm £119.98
200cm × 100cm 50mm £146.98
200cm × 100cm 100mm £268.98

Fixed product options: Colour: Black.

Quantity pricing is calculated automatically for this range. A 5% foam-sheet quantity discount is included when the calculated line value reaches £150 or more.

Spend £170 or more in one qualifying order and receive an additional 10% off at checkout.

Made to your measurements

Free Closed Cell Foam Cut to size

Order AFP30 or AFP45 closed cell foam cut to the rectangular length and width you need, with no separate cutting charge. Choose the grade, thickness and colour, then enter the finished dimensions. You pay for the smallest standard sheet required to produce each piece.

Quick answer

Enter the finished length and width in centimetres. A cut that fits within 100cm × 100cm is charged at the 100cm × 100cm sheet price. A larger cut that fits within 200cm × 100cm is charged at the 200cm × 100cm sheet price. The foam can be rotated to fit the parent sheet, and your finished cut dimensions are attached to the basket item and passed through with the order.

Free cut-to-size service

AFP30 Closed Cell Foam Cut to Size

Order AFP30 rigid cross-linked polyethylene foam cut to your finished length and width. Choose black or white, select the required thickness and enter the dimensions for each rectangular piece.

How pricing works: You pay for the smallest standard sheet needed to produce the finished cut.

Cutting charge: £0.00.

AFP30 closed cell polyethylene foam sheet for free cut-to-size ordering
Price £11.78

Sheet charged: Enter your finished dimensions

Cutting charge: £0.00

Enter both finished dimensions to calculate the sheet required.

Free cut-to-size service

AFP45 Closed Cell Foam Cut to Size

Order AFP45 denser cross-linked polyethylene foam cut to your finished length and width. AFP45 is supplied in black. Select the required thickness and enter the dimensions for each rectangular piece.

How pricing works: You pay for the smallest standard sheet needed to produce the finished cut.

Cutting charge: £0.00.

AFP45 closed cell polyethylene foam sheet for free cut-to-size ordering
Price £11.99

Sheet charged: Enter your finished dimensions

Cutting charge: £0.00

Enter both finished dimensions to calculate the sheet required.

Ordering more than one cut? Use Quantity for identical pieces. If you need different finished sizes or thicknesses, add each requirement to the basket separately so every cut instruction stays attached to the correct item. This online service is for rectangular cut-to-size pieces only.

Live online pricing

Select the grade, sheet size, thickness and colour to see the current price and order standard sheets online.

Free cut-to-size service

Use the cut-to-size ordering section above to choose AFP30 or AFP45, select the thickness and colour, and enter the finished rectangular dimensions. Cutting is free.

Free UK mainland delivery

UK mainland orders are delivered free of charge. Remote-area surcharges can apply outside the standard mainland delivery area.

Trade and repeat supply

For ongoing production, bulk quantities or repeat requirements, use our Trade & Wholesale Foam service for a tailored quotation.

Compare closed cell foam

Closed Cell AFP30 vs AFP45

Both grades are rigid cross-linked closed-cell polyethylene foams. Use the comparison below to choose between the lighter AFP30 grade and the denser AFP45 option based on load, compression, water performance and the intended application.

Property Closed Cell AFP30 Closed Cell AFP45
Material and cell structure Rigid cross-linked closed-cell polyethylene foam Rigid cross-linked closed-cell polyethylene foam, higher density
Density 30 kg/m³ ISO 845 45 kg/m³ ISO 845
Compression at 25% deflection 62 kPa ISO 844 100 kPa ISO 844
Impact and load performance Good impact resistance Increased load-bearing capacity and impact resistance
Water behaviour Waterproof and non-absorbent Waterproof and non-absorbent; maximum water absorption ≤1 vol %
WRAS approval Approved for cold-water use Not listed in the current AFP45 data sheet
Dimensional stability <2% after 24 h at 70 °C <2% after 24 h at 70 °C
Standard supply colour Black / White Black
Typical applications Medium-weight packaging, impact protection, flotation aids, marine use, thermal and acoustic insulation, anti-vibration mounting, gaskets and seals Heavier items or higher impact loads, rigid case inserts, marine and outdoor use, structural gaskets and seals, high-density insulation
Choose this grade when Medium-weight items requiring impact protection and water resistance Where AFP30 does not provide enough load-bearing performance

Supply options: Order standard full sheets online or use the Free Closed Cell Foam Cut to size section for rectangular finished dimensions. You pay for the standard sheet required to produce the cut, with no separate cutting charge.

Technical values are typical guide values, not guarantees of performance or suitability. Confirm the exact grade for safety-critical, regulated or other critical applications before ordering.

Practical buying guidance

How to Choose the Right Closed Cell Foam Sheet

Start with the job the foam must perform, then narrow the choice by rigidity, water exposure, appearance, thickness and fixing method. This avoids choosing by colour or density alone.

1. Define the main job

Decide whether the sheet needs to protect an item, line a case, create a seal, fill a gap, resist weather, support a load or form a visible finished insert. The required function should determine the material family.

2. Decide how rigid it should be

Closed Cell AFP30 and Closed Cell AFP45 are rigid cross-linked polyethylene grades. AFP30 is the lighter general-purpose option, while AFP45 provides greater density and resistance under load.

3. Check water and weather exposure

Both grades are waterproof and non-absorbent. AFP45 additionally specifies maximum water absorption of ≤1 vol %, while AFP30 is WRAS approved for cold-water use. Match the exact grade to the environment and complete installation.

4. Choose thickness from the finished space

A 3mm liner and a 50mm protective insert solve very different problems. Measure the usable space, required compression and clearances before selecting thickness. More foam is not automatically better if it prevents a case, panel or joint from fitting correctly.

5. Plan how the foam will be retained

Dry fit the foam first and decide whether the finished part will be close-fitted, mechanically retained or bonded separately. Standard online sheets are supplied unbacked, and custom lamination is available on request for suitable requirements.

6. Confirm technical or regulated requirements

Fire, water, transport, healthcare and safety-critical projects require the exact product specification. Use the All Foam technical data sheets and contact us where suitability must be confirmed.

Material explained

What Is Closed Cell Foam?

Closed cell foam contains cells that are more fully sealed from one another than open-cell foam, which generally reduces water absorption and creates a more stable structure. All Foam AFP30 and AFP45 are rigid cross-linked polyethylene, commonly called PE foam, closed-cell grades with different densities, compression performance and intended loads.

Closed cell polyethylene foam

Polyethylene foam, often called PE foam, is the main rigid closed-cell family on this page. Closed Cell AFP30 and Closed Cell AFP45 are cross-linked PE grades with different densities and load-bearing characteristics.

AFP30 and AFP45 are different grades

Both products are cross-linked polyethylene foam, but their densities and load-bearing characteristics differ. AFP30 is the lighter grade, while AFP45 is selected where greater rigidity and support are required.

Closed cell vs open cell foam

Open-cell foam allows more air movement through its structure and is commonly used for upholstery cushioning and acoustic absorption. Closed-cell foam is usually a better starting point for lining, sealing, lower water absorption and stable protective inserts. Read our open cell vs closed cell foam guide for a fuller comparison.

Fixing and installation

Installing Closed Cell Foam Sheets

The current online AFP30 and AFP45 sheets are supplied unbacked, so the fixing method can be selected separately for the substrate and finished application.

Dry fit before fixing

Check dimensions, clearances, orientation and any cut-outs before the foam is permanently retained. This is particularly useful for case liners, gaskets and shaped inserts.

Choose a suitable fixing method

Some applications hold the foam by close fit or mechanical retention, while others use a separately specified bonding system. Match the fixing method to the exact foam, substrate, temperature and service conditions.

Prepare the receiving surface

Where bonding is part of the finished design, make sure the receiving surface is clean, dry, stable and compatible with the chosen fixing system before installation.

Thickness and sizing

Choosing Closed Cell Foam Sheet Thickness

The online range runs from thin 3mm Closed Cell AFP sheets to 100mm polyethylene options. Thickness changes clearance, compression depth and stiffness, so it should be chosen from the finished assembly rather than by copying another project.

Thin sheets for liners and seals

Thin closed-cell sheets are often used as liners, separators, anti-rattle pads, surface protection and gaskets. Measure the available gap and required compression carefully, especially where a door, lid or panel must still close correctly.

Medium thickness for inserts and protection

Medium-depth sheets can provide more material around tools, equipment and case contents. The correct depth depends on item weight, contact area, impact risk and how much usable room is available inside the case or container.

Deep sections for gap filling and support

Thicker AFP options can suit gap filling and deeper protective components, but a large thickness does not compensate for choosing the wrong material. Check how much the foam can compress and whether the load is spread over enough area.

Need a non-standard size?

Order standard full sheets online or use the Free Closed Cell Foam Cut to size section for rectangular pieces. Select the grade, thickness and colour, then enter the finished dimensions so the correct parent sheet price is applied automatically.

Common applications

What Are Closed Cell Foam Sheets Used For?

Closed-cell foam is used across packaging, industrial protection, sealing, fabrication and specialist projects. The examples below show useful starting points, not universal specifications.

Industrial and commercial packaging

AFP30 is specified for medium-weight items requiring impact protection and water resistance. AFP45 is the higher-density option for heavier items or higher impact loads where greater load-bearing support is required.

Case inserts and equipment protection

Both grades can be used for protective inserts. AFP30 provides the lighter rigid option, while AFP45 is specifically listed for case inserts requiring more rigid support.

Gaskets and seals

AFP30 is listed for general gasket and seal stock, while AFP45 is listed for structural gaskets and seals. Choose the grade and thickness from the required compression, load and complete sealing specification.

Marine and outdoor applications

AFP30 is specified for marine applications and AFP45 for marine and outdoor applications. Both provide waterproof, non-absorbent performance, but regulated or safety-critical use still requires the complete application to be checked.

Insulation and anti-vibration use

AFP30 is listed for thermal and acoustic insulation and anti-vibration mounting. AFP45 is listed for high-density insulation where the greater density and load-bearing performance are required.

Flotation and cold-water applications

AFP30 is listed for flotation aids and is WRAS approved for cold-water use. Do not assume that a generic foam sheet is suitable for life-saving or regulated flotation equipment; confirm the exact standard and finished application before ordering.

Important specification checks

Fire Performance and Sound Control

Two common mistakes are assuming that closed cell means fire retardant and treating a closed-cell sheet as a complete soundproofing product. Both depend on the exact material and finished construction.

Closed cell does not mean fire retardant

Cell structure and fire performance are separate properties. Closed Cell AFP30 and Closed Cell AFP45 are not offered as fire-retardant grades by All Foam. Where a project has a fire requirement, check the technical specification for the exact product and confirm the required classification before ordering.

Closed cell foam is not room soundproofing

Closed-cell sheets can be useful for sealing, vibration control or insulation within a designed assembly, but they are not a complete answer for sound transmission through walls, floors or ceilings. If the goal is reducing room reflections and reverberation, compare our current Class 0 Acoustic Foam Sheets range.

Check the exact specification when required

For regulated, safety-critical or tightly specified projects, check the exact density, compression, water and fire information before ordering. Our technical data sheets are available for specification checks, or contact the team with the requirement.

Trade and bulk supply

Trade Closed Cell Foam, Blocks and Repeat Orders

Buying closed cell foam for production, packaging or repeat commercial use? We can supply AFP30 and AFP45 as standard full sheets or rectangular cut-to-size pieces, with no separate cutting charge. For bulk or repeat requirements, send us the grade, thickness, finished dimensions, quantity and expected ordering pattern for a tailored quotation.

Planning a bulk or repeat order? Visit Trade & Wholesale Foam for commercial enquiries covering foam sheets, blocks, packaging materials and specialist foam. Include the material, thickness, finished dimensions, quantity and expected ordering pattern so the team can review the requirement efficiently.
Closed cell foam guides

Learn More About Closed Cell Foam

Compare AFP30 and AFP45 polyethylene foam, understand closed-cell construction and explore practical marine, case-insert, gasket and protective applications.

Helpful answers

Closed Cell Foam Sheet FAQs

Clear answers about AFP30 and AFP45 polyethylene foam, water performance, grade differences, cut-to-size service, fixing methods, sound control and fire requirements.

Ask the All Foam Team
What is closed cell foam?

Closed cell foam contains cells that are more fully sealed from one another than open cell foam. All Foam AFP30 and AFP45 are rigid cross-linked polyethylene, or PE, closed-cell grades supplied for packaging, sealing, insulation, impact protection and other specialist applications.

What is polyethylene foam or PE foam?

Polyethylene foam, often shortened to PE foam, is a closed-cell foam made from polyethylene. All Foam currently supplies AFP30 at 30 kg/m³ and the denser AFP45 at 45 kg/m³ as cross-linked polyethylene foam sheets.

Is closed cell foam waterproof?

Yes. All Foam AFP30 and AFP45 are waterproof, non-absorbent cross-linked polyethylene foam grades. AFP45 has a specified maximum water absorption of 1% by volume, while AFP30 is WRAS approved for cold-water use. Other closed-cell materials can differ, so check the exact grade for the application.

What is the difference between Closed Cell AFP30 and Closed Cell AFP45 foam?

AFP30 has a nominal density of 30 kg/m³ and compression of 62 kPa at 25% deflection. AFP45 has a nominal density of 45 kg/m³ and compression of 100 kPa at 25% deflection, giving greater load-bearing and impact resistance for heavier-duty applications. Both are available online from 3mm to 100mm.

How should closed cell foam sheets be fixed in place?

The current online AFP30 and AFP45 sheets are supplied unbacked. Depending on the application, the foam can be close-fitted, mechanically retained or bonded using a separately selected compatible fixing system. Custom lamination is available on request for suitable commercial requirements.

Can I order closed cell foam cut to size?

Yes. Use the Free Closed Cell Foam Cut to size section below the standard AFP30 and AFP45 product cards. Choose the grade, thickness and colour, enter the finished rectangular length and width, and the site charges the smallest standard sheet required to produce the cut. There is no separate cutting charge.

Is closed cell foam suitable for packaging inserts?

Yes. Both AFP30 and AFP45 are specified for industrial and commercial packaging. AFP30 is a useful starting point for medium-weight impact protection, while AFP45 is intended for heavier items, higher impact loads and case inserts requiring more rigid support.

Is closed cell foam good for soundproofing?

Closed cell foam should not be treated as a complete room soundproofing solution. AFP30 can be used for insulation and anti-vibration applications, but open-cell acoustic foam is the better All Foam product family for reducing reflections, echo and reverberation inside a room or enclosure.

Is all closed cell foam fire retardant?

No. Closed cell describes the cell structure, not fire performance. Closed Cell AFP30 and Closed Cell AFP45 are not offered as fire-retardant grades by All Foam. Where an application has a fire requirement, check the technical specification and contact All Foam if a specific classification is required.