Tremco illbruck is a Grand Design

© Tremco illbruck
A recent programme in the iconic self-build series, Grand Designs followed progress on the construction of a prototype, modular steel dwelling, where intelligent sealant products from the Tremco illbruck range were employed to install the windows and curtain walling.

As a manufacturer of balustrade and other architectural metalwork products, Alan Dawson hit on the idea of designing his own answer to achieving the European PassivHaus standards and commissioned Chesterfield based AM Profiles to provide the critical fenestration and doors for the project.

AM Profiles Therm+ curtain walling achieved all of the thermal, aesthetic and other objectives, with the illbruck Duo Window Membrane HD attaining a standard of airtightness far better than required under Building Regulations.

The Technical Designer on the project for AM Profiles, Chris Rigden, comments: “We have used Tremco illbruck products on a regular basis and called in the company’s technical manager to consult on this scheme because the client was tying to achieve PassivHaus standards. He duly recommended Duo Window Membrane HD with Tremflex 40 adhesive used to secure it in place around the frames.

“Our Therm+ system features timber profiles, protected by an aluminium capping, which has two layers of glass set into it using special frame gaskets to achieve the energy performance. We made up one of the largest screens here in our Chesterfield plant and fitted the illbruck Duo Window Membrane HD around it ready for delivery, while the client made up the rest of the frames himself. Again the illbruck Duo Window Membrane HD was employed to seal the units in between the structural posts.

“We got excellent design assistance and technical advice from Tremco illbruck on this project, and expect to use the membranes again for other high specification designs in the future.”

Able to offer an airtightness of 600 Pascals, which actually exceeds PassivHaus performance, the illbruck Duo Window Membrane HD was supplied to the client in a non-standard 200 mm width in order to coordinate with the frame dimensions.