seals against driving rain, snow, wind and dust

Fit and forget – no remedial visits after large movement, unlike wet sealants

ISO-BLOCO T-MAX is a special PUR sealing tape impregnated with a fire resistant polymeric dispersion. It is specifically designed for larger joints which require large movement accommodation. In addition to supplying a weathertight seal against wind driven rain it also has thermal and acoustic insulation properties, complying with UK Building Regulations.

ISO-BLOCO T-MAX is particularly well suited for multistory timber framed buildings where a large amount of differential movement is expected between fenestration or roofs and the external facades, allowing up to 39 mm of movement, with a single tape. Ideal for window head or cill and under roof eaves.

Product benefits
  • fulfills UK Building Regulations and RAL recommendations
  • seals against driving rain, snow, wind and dust
  • accommodates up to 39 mm of movement (>350 % MAF)
  • fit and forget – no remedial visits after large movement, unlike wet sealants
  • perfectly flat visual surface finish
  • vapour permeable – breathable
  • thermal and acoustic insulating properties
  • self-adhesive to aid installation / location
  • permanently elastic with long life expectancy
  • can be painted with standard emulsion paints
  • compatible with all known building materials
  • constant quality control to DIN EN ISO 9001 and DIN standards
Application Areas

A versatile product that has a wide range of uses, but generally for sealing construction joints (including larger movement joints) in areas such as:

  • external facade seals on timber framed buildings
  • prefabricated concrete, and other material, elements (including civil engineering)
  • perimeter seals for fenestration (windows / doors)
  • cladding panels
  • curtain walling

Used in a variety of construction methods and industries including:

  • timber and / or steel framed buildings
  • general construction & civil engineering
  • modular construction and other MMC types
  • service
  • products


We can help you find the ideal product for your requirements.

to the service section


We can give you tips on processing our products and help with our know-how.

to the service section

Call-back / Request a visit

Would you like a visit or a call-back from one of our sales representatives? We would be pleased to be of assistance.

request a visit

request a call-back