Pitched roofs are commonly identified as cold if they incorporate thermal insulation at ceiling level, leaving a cold loft, or as warm if they incorporate thermal insulation at the rafter line.

DuPont Tyvek^® membranes are suitable for use in all forms of pitched roof and may be used in new-build, refurbishment and retro-fit projects. They protect the building fabric against rain, snow and wind and the risk of damaging condensation: they also help to achieve significant gains in energy efficiency, the size of those gains will be determined by how you choose to install the Tyvek^® membranes.  

Click on the cold & warm links below for details of :-

Non-ventilated roofs     cold    warm
Roofs with no provision for airflow beneath the underlay will be more energy efficient than conventional, ventilated roofs.

Sealed roofs     cold    warm
Roofs with no airflow beneath the underlay and with all air leakage paths sealed will be even more energy efficient than non-ventilated roofs and they allow fuller use of the building volume.

Other roofs    warm
Tyvek^® membranes can also be used in industrial roofs and in loft conversions.

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