New ISO-BLOCO FILLER from ISO-Chemie provides a fast and cost effective solution for new and replacement window installations of all sizes and in all environments. It is particularly suitable window replacements in Scottish dwellings that have no existing cavity closure. The ISO-BLOCO FILLER provides an external weather-tight seal, giving both a thermal and airtight seal to the existing cavity.

Specifically developed for cavity walls applications with a check reveal, ISO BLOCO FILLER is fitted between the inner and outer walls to provide a high performance, reliable and effective sealing tape solution for all weather protection.

ISO-BLOCO FILLER saves time and money on site, as it can be fitted in the wet and without the need for external access, which is ideal for all windows above ground level. No other products are necessary in most cases, but it is compatible with all of the ISO-CHEMIE internal airtight sealing solutions.

Montagebild_FILLER_kleinISO-BLOCO FILLER is made up of two components: a special elastic foam filler block which provides the basis for sealing the window against the brickwork before forming an airtight and thermally insulated seal to the wall cavity, ensuring compliance with the various energy saving regulations including the European (EnEV) and the RAL quality assurance association.

The second component is an impregnated foam sealing bar designed to seal the window frame against the outer wall and protect the window connection joint against the elements, providing an ideal solution for check reveals of up to 30%.

Resistant to temperatures between -30ºC to +90ºC, product is available in a range of options depending on installation requirements: 1000 x 60 x 60 for cavities 60 – 44 mm; 1000 x 60 x 80 for cavtities 80 – 60 mm, and 1000 x 60 x 100 for cavities 100 – 80 mm.

ISO-Chemie is one of Europe’s main producers of impregnated foam sealants, specialising in the manufacturer of foam products from polyethylene (EPE), polypropylene (EPP) and polyurethane (PUR) using the latest production techniques.

The company’s UK technical and distribution operation is  based in the North East of England, supported by a dedicated logistics service to ensure customer orders are completed as quickly and efficiently as possible (usually next-day delivery). More at or email Tel: 01207 566874.