• DAFA TriFlex Airtight Grommet shown on a white background — blue self-adhesive membrane with DAFA branding and a black flexible sealing center for airtight installations.
  • DAFA TriFlex Airtight Grommet shown from side view — flexible black sealing membrane with blue DAFA-branded backing visible underneath, displayed on a white background.
  • DAFA TriFlex Airtight Grommet installed on a vapour barrier membrane with insulation and timber frame, sealing a single electrical cable for airtight performance.
  • DAFA TriFlex Airtight Grommet installed on a vapour barrier membrane, sealing multiple electrical cables passing through a corrugated conduit, with insulation and timber frame in view.
  • DAFA TriFlex Airtight Grommet installed behind exterior timber cladding, sealing a single cable through a vapour control layer for airtight and weatherproof performance.
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DAFA TriFlex Airtight Grommet 115

DAFA TriFlex Airtight Grommet 115

£7.58
£7.58
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DAFA TriFlex Airtight Grommet 115 | Passive House Cable & Pipe Sealing. The DAFA TriFlex Airtight Grommet 115 is the tradesman’s favourite for airtight sealing of cable and pipe penetrations. Ideal for energy-efficient construction and passive houses, this grommet ensures the building envelope remains intact and compliant with UK building regulations for energy performance.

Proper sealing during installation is key to an airtight layer and no air leaks. The DAFA TriFlex Airtight Grommet 115 performs well on various substrates, including concrete, timber, and membranes, offering excellent adhesion and moisture resistance. This solution enhances insulation, reduces heating costs, and ensures long-term sustainability for your project.

Enhance Your Energy Savings
By ensuring truly airtight cable sealing during the initial installation, the DAFA Universal Cable Grommet 115mm not only meets regulatory requirements but also boosts the energy performance of the entire building. Professionals across the UK choose DAFA for reliable, proven results that contribute to a reduced carbon footprint and a healthier indoor environment.

Uses
• New build residential and commercial projects.
• Retrofit projects requiring airtight sealing for unconnected cable and pipe installations.
• Passive house and energy efficiency projects.
• Application on walls, roofs, and floors for airtight performance.

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Pre-Punched Marking Diameter Ø Suitable Pipe/Cable Ø
1 3mm 7-10mm cables
2 7mm 10-22mm cables
3 18mm 22-35mm cables/flex pipes

Key Features

• Universal: Fits multiple cable and pipe diameters.
• Airtight: Stops air leaks, reduces heat loss, improves energy efficiency.
• Pre-termination: Fits before cables or pipes are terminated, ideal for new build projects.
• Durable: Made from rubber to withstand moisture, UV, and temperature variations.
• Compliance: Meets UK airtightness regulations for sustainable and energy-efficient buildings.

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Technical Datasheet