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July 2025

NEW INITIATIVE OPENS THE NATIONAL WINDOW ON ENERGY EFFICIENT FOAM TAPES

Our advanced foam sealant tapes are featuring in a new Passivhaus initiative designed to showcase the energy saving benefits of modern window systems.

Our ISO-BLOCO foam sealant tape has been installed by Wealden Joinery around the frames of Gutmann windows currently featuring in a full-scale, two-storey sustainable Passivhaus mock house, which was centre stage at the recent NEC InstallerSHOW.

Following HAUS’s premiere at the Birmingham event, it’s relocating to London and then Cambridge as part of an education drive to highlight to local authorities, housebuilders and commercial developers the latest energy efficiency solutions such as foam sealant tapes, which can be used in sustainable development and modern methods of construction.

Up to 70% cost savings can be achieved when using ‘fit and forget’ ISO-BLOCO high performance foam tape, enabling installers to quickly and effectively seal windows from inside the building during the construction phase. This avoids the requirement to use time consuming and expensive external access systems, which together with associated health and safety issues, can contribute significantly to a project’s overall costs.

Moreover, because the foam sealant can be applied in the wet and rain, the installation of windows can be undertaken regardless of external weather conditions, avoiding further time consuming and costly delays. This can add up to potential savings of hundreds of pounds per day, ISO-Chemie estimates.

ISO-BLOCO ONE provides a longer lasting seal for window and door joints up to 30mm wide and installation compliance to BS8313-4:2016. It is impermeable to driving rain at a minimum of 750 Pa - 66% higher reliability than most conventional joint sealing tapes.

Once installed, the tape ensures structures are better protected from elemental factors like wind, dust and moisture ingress by accommodating the changes in structural movement caused by environmental, cyclical and settlement factors. Product complies with Building Energy Act on windows and doors as well as the RAL quality assurance association and can accommodate extremes of temperature changes, from -30°C to + 80°C.

Andy Swift, our UK sales and operations manager, said: “The HAUS provides a focal that showcases the quick-to-install, energy saving benefits of modern foam sealant tapes - and the important role they can play in reducing heat loss from buildings. This initiative is part of our strategy to educate specifiers, housebuilders and the wider construction sector about energy efficient improvement solutions in the UK - up to 70% cost savings can be achieved when using our tapes for high performance window sealing, rather than alternative traditional systems such as silicone sealants.”

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