Black Neoprene Sponge Foam Strip 10m — Waterproof Sealing & Draught Exclusion

Our Black Neoprene Sponge Foam Strip is a closed-cell neoprene (polychloroprene) foam sealing strip, supplied in 10-metre rolls for professional and DIY sealing applications throughout the UK. The closed-cell foam structure provides excellent waterproofing, thermal insulation, and draught exclusion, while neoprene's inherent chemical resistance makes it suitable for industrial, marine, and construction applications where standard PU foam would fail. Available in multiple widths and thicknesses with a self-adhesive peel-and-stick backing, free UK delivery.

Specifications

Property	Specification
Material	Closed-cell neoprene (polychloroprene) sponge foam
Colour	Black
Roll Length	10 metres per roll
Cell Structure	Closed-cell — does not absorb water
Temperature Range	-40C to +100C
Backing	Self-adhesive peel-and-stick for rapid installation
UV Resistance	Good — suitable for outdoor sealing applications
Oil Resistance	Good — neoprene resists petroleum-based oils and greases
Delivery	Free UK delivery on all orders

Why Choose Neoprene Over Standard Foam Seals?

Standard polyurethane foam sealing tape is adequate for light domestic draught exclusion but deteriorates rapidly when exposed to oils, solvents, extreme temperatures, UV, or sustained compression. Neoprene sponge foam sealing strips are the professional specification because neoprene has a waterproof closed-cell structure and will not absorb water even when submerged, it has oil and fuel resistance suitable for engine bays and marine environments, it remains temperature stable from -40C to +100C, it is UV resistant and does not crack with outdoor exposure, it has compression recovery and returns to shape after sustained compression maintaining the seal, and it is chemically resistant to dilute acids, alkalis, and most industrial cleaning chemicals.

Applications

Doors and windows — draught exclusion seals for commercial and residential doors, windows, and skylights
Marine and boatbuilding — hatch seals, deck fitting gaskets, and waterproofing strips
Automotive — engine bay seals, boot and door gap sealing, underbonnet vibration damping
Industrial machinery — panel seals, electrical enclosure gaskets, oil-resistant door seals
HVAC and refrigeration — cold room door seals, freezer gaskets, ductwork sealing
Construction — expansion joint backing, movement joint filler, panel gap sealing
Electronics — EMI/EMC gasketing, vibration isolation for PCB enclosures

Frequently Asked Questions

Is neoprene foam waterproof?

Yes — neoprene sponge foam in closed-cell form is fully waterproof. The closed-cell structure means individual foam cells are sealed and do not interconnect, preventing water penetration. This makes it ideal for outdoor sealing, marine applications, and environments where moisture ingress must be prevented.

What is the difference between neoprene sponge and EPDM foam?

Both neoprene (polychloroprene) and EPDM foam strips are excellent sealing materials. Neoprene has better oil and fuel resistance, making it the correct choice for automotive and marine applications. EPDM has marginally better UV and ozone resistance and is typically lower cost. For oil-contact environments, always specify neoprene.

Can neoprene foam strip be used on vehicles?

Yes — neoprene sponge foam is a standard specification for automotive sealing. It is oil-resistant, temperature-stable across engine bay ranges, and will not deteriorate from petroleum-based fluids. It is used for door seal weatherstripping, engine lid gaskets, and underbonnet panel seals.

Does the self-adhesive backing work on rough surfaces?

The self-adhesive backing performs best on clean, smooth, and dry surfaces. On rough or porous surfaces (concrete, brick, rough timber), additional adhesive is recommended — use a contact adhesive such as Evo-Stik or a specialist foam tape adhesive for maximum bond strength.

More Rubber Sealing and Sheeting from Rubberco

Rubber Sheeting — neoprene, EPDM, nitrile, silicone and SBR sheet
Rubber Matting — matting rolls and sheets for floor applications

Need a custom cut or large quantity? Contact our team for a quote.

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