New technical guides help determine correct roof space ventilation requirements

  • 10 Jul 2024

Two visual technical guides have been released by Glidevale Protect to help specifiers and roofing contractors determine the correct roof space ventilation requirements depending on the type of pitched roofing underlay used, for both permeable and impermeable roof coverings.

Ensuring roofs comply with BS 5250:2021, the code of practice for the management of moisture in buildings, is essential to prevent the build-up of condensation which can lead to damp and mould. Glidevale Protect has simplified this issue into two single-page flow charts that help identify the correct roofing membrane and ventilation solutions based on various factors. The first guide addresses permeable roof coverings, such as clay or concrete tiles and natural slate tiles, while the second focuses on impermeable roof coverings, like in-roof solar PV panels, man-made slates, or metal sheeting.

The two documents help specifiers and contractors to easily navigate Glidevale Protect’s product range to find the most appropriate roofing membrane and ventilation solution, whether installed on a cold or warm roof. Additionally, the documents provide guidance on whether counter battens are necessary and if ventilation is needed above or below the membrane, among other considerations.

The guides follow the white paper Glidevale Protect published last year which offers practical guidance on the ventilation strategies required for use with different roofing membranes to meet the requirements of BS 5250. The new technical guides are a handy summary of this document, demonstrating how to build tight and ventilate right to create healthy buildings.

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