IM Fleece Tape: High-Performance Airtight Membrane for Sealing and Joint Protection - Airtight Window & Doors Sealing Tapes

IM Fleece Tape – Airtight & Vapour Control Window and Joint Sealing Tape

IM Fleece Tape is a fleece-reinforced airtight membrane tape with a variable SD value, designed for both internal and external sealing of window connection joints, wall junctions, and other critical airtightness details. The tape combines a polyamide membrane with a non-woven surface for excellent plaster adhesion, and a modified HMPSA adhesive layer for strong, durable bonding to multiple substrates.

Key Features & Benefits

• Airtight and watertight – provides a continuous barrier to prevent air leakage and moisture ingress.
• Variable SD value – suitable for both internal and external use in airtightness and vapour control applications.
• Pre-set fold line – ensures precise fitment in corners and junctions.
• High adhesion and flexibility – bonds to concrete, brick, timber, PVC, and metal, accommodating building movement.
• Plasterable fleece face – integrates seamlessly with mortar or plaster finishes.
• Available sizes – 75 mm, 100 mm, 150 mm, and 200 mm widths (all 25 m rolls).

Material Composition

• Membrane: Polyamide film with non-woven substrate.
• Adhesive: Modified HMPSA.
• Liner: Release-foil.

Application Guidance

• Surfaces must be dry, clean, and free from dust, grease, or release agents.
• Press firmly with a pressure roller for optimum adhesion.
• Suitable for installation with window fitting or for retrofitting after installation.
• Non-woven surface can be plastered or rendered over immediately.

Use Cases

• Window and door perimeter sealing.
• Floor/wall and wall/ceiling junctions.
• Curtain wall and façade interfaces.
• Vertical and horizontal joints.