Isomass Isocheck Expandastrip Frame Seal 4000mm x 15mm x 6mm to 9mm

Isocheck Expandastrip is an open-cell polyurethane foam, impregnated with chemically stabilised acrylic and backed with self-adhesive scrim tape.

Expandastrip retains permanent elasticity. Once unpacked and applied, it expands to fill joints, including any imperfections or irregularities. Its remarkable flexibility makes it ideal for uneven surfaces, and it is compatible with materials such as concrete, brick, steel, plastics, timber, and fibrous substances.

The product is supplied in rolls that are mechanically compressed to one-sixth of their original thickness, with a self-adhesive coating on one side. When fully expanded, it provides a light air baffle. Furthermore, when expanded by only 25% of its compressed thickness, it forms a weather-tight seal, protecting against driving rain and wind.

Expandastrip is perfect for sealing joints between precast units, around doors and window frames, or between corrugated roofing panels, roof structures, and roof lights, as well as in ventilation and air conditioning ductwork.

It is also commonly used as a primary or secondary seal in vertical and horizontal joints in building facades, metal cladding systems, window perimeter curtain walling, and skylights.

Typical Applications include:

• Acoustic sealing of gaps between floors and walls
• Weatherproof sealing around windows and doors
• Weatherproof sealing of profiled sheeting
• Weatherproof sealing of expansion joints
• Weatherproof sealing of prefabricated sections
• Air and dust sealing in domestic properties