ISO Chemie likes to be beside the seaside!
1st July 2014

Securing a reliable window seal in demanding coastal weather conditions has been achieved for a new build project using ISO-Chemie’s foam sealant tapes. Timber-clad ‘Merry Harbour’ house has been built at West Wittering located about seven miles south west of Chichester on the Hampshire coast.

The property, which overlooks the Solent, will be exposed to the elements, particularly the ravages of wind-blown saltwater, so high performance products have been used to provide a reliable sealing solution for the Unilux triple glazed aluminium windows and bi-fold doors.

A further benefit will be the foam tapes’ ability to accommodate movement of the timber framed structures without the cracking associated with silicone, creating a permanent ‘adjustable’ seal.

ISO-Chemie’s ISO-BLOCO 600 and ISO-BLOCO One sealant tapes were specified and installed by Kenilworth-based JLH Bros Ltd, window and door installers specialising in the passive house market, to meet the airtight sealing, weatherproofing and thermal property requirements of the coastal location.

The ISO BLOCO tapes have been used to seal the gaps between the window and door frames and the walls of the property. In some places the gap was as narrow as 4mm and as wide as 10mm, so a highly flexible, self-expanding tape solution was chosen to prevent moisture ingress and provide a cost effective all weather seal.

Paul Proctor, JLH’s managing director, said: “The coastal location meant we had to allow for extreme wind and weather patterns when installing and sealing the windows and doors.

“ISO BLOCO is easy to use and fit, expanding to fill the voids, and was the best available option for this project, providing a highly effective, long lasting solution.”

Up to 70% cost savings can be achieved using the ISO-BLOCO One foam tape because it enables installers to seal windows from inside the building, avoiding the need to use time consuming and costly external access systems like scaffolding and ladders.

The internal air tight seal has been tested at 1000 Pa pressure difference (20 times more than UK Building Regulations.) and found to give less than 0.01 m³ of air loss. At the same time, depending on tape width, it will also supply a U-Value of 0.55 and reduce sound by 45 dB, straight from the box.

Quick and easy-to-apply, the self-adhesive ISO BLOCO 600 tapes can be used to seal joints ranging in width from 1mm to 42mm providing excellent thermal and acoustic insulation properties - it can accommodate a temperature range of -30° to +90° and is impermeable to driving rain with a minimum of 600 Pa, making it one of the best performing tapes in its class.


www.iso-chemie.co.uk