Posts from December, 2016

The Use of Vapour Permeable Underlays in Compliance with BS 5534

Written On by RTA Member

The introduction of the British Standard for slating and tiling: BS 5534: 2014 lead to some concerns being raised about its application. One source of confusion is the use of vapour permeable (VP) underlays and so this article will try to provide some clarity. Vapour permeable underlays, often referred to as ‘breather’ underlays or membranes, […]

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