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Order a sample
You can order up to 3 free sample tiles.
We'll aim to deliver your sample order within 5-7 working days from your order date.
Underlays
A range of vapour-permeable underlays, independently tested and suitable for all wind uplift zones in accordance with BS 5534.
High-quality protection. Withstands the strongest winds.
The BMI Redland underlay system provides a heavy-duty wind-tight system for your roof. Our Spirtech and Divoroll vapour-permeable underlays integrate smart features, such as integral glue-strips, superior tear-resistance and a reinforced grid, so that installation is quick and easy.
Independently tested by the BRE, all our underlays exceed BS 5534 requirements and are suitable for all wind zones.
Main features
Fully compliant with BS 5534 and BBA Certified
Suitable for all wind zones throughout the country (1-5)
Strong and durable with reinforced grid
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