Roofs

Roofs

Roofs for residential buildings are predominantly pitched and designed as either a ‘cold’ roof with insulation at horizontal ceiling level, or a cathedral roof where the insulation follows the line of the pitch of the roof.

The basic principles for flat roof design apply to a Passivhaus in the same way as any other building, and generally fall into two categories: ventilated roofs or warm roofs.

A ventilated flat roof allows any unwanted interstitial ...

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TJI timber joists can help cathedral roofs meet Passivhaus performance requirements. The joists come in various depths for soft or blown insulation, and thermal bridging is minimised thanks to the slender timber hardboard web. Thermal bridging...

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Timber trussed rafters are very familiar to the construction industry and are inexpensive and fast to erect. To create a ‘thermal bridge free’ junction, ‘dropped ceiling’ or ‘bob tail trusses’ allow for the continuity of insulation between the...

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Comprises 142 or 172 mm thick structural insulated panels (SIPs) connected with a unique jointing system for walls and roofs, and intermediate floors using I-beams or open web joists.

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N/A
Featured project:
The Greenhauses, London