• DAFA Renovation Collar — self-adhesive airtight sealing collar with blue DAFA branding, designed for pipe and cable penetrations, displayed on a white background.
  • DAFA Renovation Collars installed on a vapour barrier membrane, sealing grey, blue, and red corrugated conduits for airtight cable penetration protection.
  • DAFA Renovation Collar installed on a vapour control membrane, sealing a white electrical cable for airtight penetration with DAFA tape applied to the surface.
  • DAFA Renovation Collar sealing a large grey duct on a DAFA vapour barrier membrane, creating an airtight pipe penetration with DAFA tape applied around the seal.
  • DAFA Renovation Collars installed on DAFA vapour barrier membrane with insulation and timber framing, sealing multiple cable and pipe penetrations for airtight performance.
  • DAFA Renovation Collar installed on a grey floor membrane, sealing red and white conduits for airtight cable entry, with insulation and DAFA tape along blue wall panels.
  • DAFA Renovation Collar sealing a grey vertical duct on a floor membrane, creating an airtight connection with black sealing base and DAFA tape for vapor control.
  • DAFA Renovation Collar installed on a grey floor membrane with a red flexible conduit for airtight sealing, secured using DAFA tape for vapor-tight performance.
  • DAFA Renovation Collar providing an airtight seal around a metal pipe on a grey floor membrane, secured with DAFA sealing tape for durable and vapor-tight protection.
  • DAFA Airtight Retrofit Grommet Passive House Cable & Pipe Sealing Installation Video
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DAFA Airtight Retrofit Grommet

DAFA Airtight Retrofit Grommet

£7.58
£7.58
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DAFA Renovation Grommet – Airtight Sealing for Passivhaus & Passive House Projects. The DAFA Renovation Grommet is a premium, airtight sealing solution designed to maintain the integrity of your building’s envelope. Ideal for Passivhaus and Passive House projects, this innovative retrofit grommet ensures an airtight seal around cables & pipes, preventing unwanted draughts and heat loss in both residential and commercial properties.

Crafted for use when it’s not possible to slide a traditional grommet over disconnected pipe or cable ends, the DAFA Renovation Grommet easily adapts to existing pipe and cable penetrations. This ensures robust protection against air leaks while improving overall energy efficiency. Comparable to leading products the DAFA Renovation Grommet stands out for its reliability, durability, and ease of installation.

Why Choose DAFA Renovation Grommets for Airtight Sealing?
• Passivhaus-Ready: Compliant with the stringent standards of Passivhaus and Passive House building practices.
• Airtight Performance: Eliminates gaps around cables and pipes, ensuring airtight sealing to minimise heat loss and prevent draughts.
• Versatile Application: Suitable for internal and external roofs, walls, and floors, and adheres to a wide range of substrates including timber, plywood, metal, plastic, and various membranes.
• Retrofit-Friendly: The split design allows installation without removing or disconnecting existing pipes and cables, saving time and labour.

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Grommet Size Ø Starting Hole Ø Suitable Pipe/Cable Ø DAFA Part No. EAN No.
115mm 4mm 5-30mm 620046279 5705636532899
160mm 25mm 30-80mm 620046277 5705636532875
250mm 75mm 80-140mm 620046278 5705636532882
300mm 130mm 140-80mm 620047766 5705636535944

Key Features

• Self-Vulcanising/Amalgamating: Securely bonds to substrates with no need for additional sealants or adhesives.
• Extremely Stretchable & Durable: Accommodates pipes and cables up to 180mm in diameter, maintaining
a reliable seal despite expansion or movement.
• UV-Resistant & Weatherproof: Built to withstand challenging conditions for long-term durability.
• Energy-Saving: Preserves airtightness to help reduce heating costs and lower carbon footprint.

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Technical Datasheet