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Isomass Isocheck Expandastrip 27 to 54mm Thick Door and Window Frame Seal 75mm x 2m - 20 Rolls

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Est. Delivery: 7-10 Working Days
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Isocheck expandastrip is an open cell Polyurethane foam, impregnated with chemically stabilised acrylic and backed with a self adhesive scrim tape.

Expandastrip remains permanently elastic and once unpacked and applied will expand to fill the joint, including any irregularities or imperfections. It’s exceptional flexibility and elasticity make it ideal for most unevenly surfaced components and is suitable for use with brickwork, concrete, plastics, steel, timber and fibrous materials.

Expandastrip is ideal for joints between precast units, sealing around doors and window frames, or between corrugated roofing panels, roof structures and roof lights ventilation and air conditioning ductwork. Expandastrip is also used as a primary or secondary seal in vertical and horizontal joints of building facades as well as metal painted cladding systems, window perimeter curtain walling and skylights.

Expandastrip is supplied on rolls compressed to one sixth of its original thickness and supplied with a self adhesive coating to one side.

At its maximum expansion it will provide a light air baffle, however when limited to 25% expansion of its compressed thickness, expandastrip can provide a weather tight seal against wind and driving rain.

Isomass Isocheck Expandastrip Door and Window Frame Seal Applications

  • Acoustic sealing of gaps between floor and wall
  • Weatherproof sealing around windows and doors
  • Air/dust sealing of domestic dwellings
  • Weatherproof sealing of expansions joints


Please note: Width of product can be increased, please call 01752 692 206 for details.

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Isomass Isocheck Expandastrip 27 to 54mm Thick Door and Window Frame Seal 75mm x 2m - 20 Rolls

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