Product descriptionOur fleece-backed airtight sealing tape provides long-lasting airtightness and vapour control across a wide range of construction details. Flexible and durable, it creates a reliable seal at junctions and penetrations and bonds to common building substrates including timber, concrete, brick and membranes. The reinforced fleece face accepts plaster and paint for discreet integration into the building envelope.
Applications and advantagesSuitable for both new-build and retrofit projects where airtightness is required, including energy-efficient and Passivhaus construction. The tape performs on window and door junctions, service penetrations and other critical details to reduce air leakage and improve thermal performance.
Key benefits- Strong adhesion – bonds to timber, brick, concrete and membranes
- Fleece-backed – can be plastered or painted over seamlessly
- Flexible & durable – ideal for corners, joints and penetrations
- Weather resistant – suitable for long-term performance
- Energy saving – supports airtightness targets for low-energy and Passivhaus builds
Related guides- Airtightness Tape: How to Choose & Install It Correctly
- Why IM Fleece Airtight Tape is the Best Choice for Airtightness
- My Builder Forgot the Vapour Control Layer? Here’s How to Fix It
- What Is a Vapour Control Layer? | VCL Explained
- What is Airtightness (and Why It Matters for Net Zero Buildings)
Available sizes- 75 mm x 25 m (single roll)
- 75 mm x 25 m (5-pack)
- 100 mm x 25 m (single roll)
- 100 mm x 25 m (4-pack)
- 150 mm x 25 m (single roll)
- 150 mm x 25 m (2-pack)
- 200 mm x 25 m (single roll)
- 200 mm x 25 m (2-pack)
Characteristics / technical specifications- Moisture-dependent SD value
- Suitable for retrofit and new construction
- High adhesive strength on window frames and masonry substrates
- Can be installed at low temperatures and can be plastered/painted over
- Stretchable
- Temperature resistance: -40°C to +80°C
- Shelf life: 24 months (dry at room temperature in original packaging)
- Weight: approx. 350 g/m²
- Thickness: approx. 0.55 mm
- Fire performance: Class E (MPA)
- UV stability: 12 months (MPA)