IN RECENT YEARS, regulatory bodies have introduced stringent standards to ensure the efficiency and safety of integrated solar roofs.

From Part L regulations and The Future Homes Standard to the NHBC standards, builders and developers face a myriad of requirements aimed at optimising energy performance and minimising environmental impact.

Central to these regulations is the need for proper ventilation within integrated solar roofs – a crucial element in preventing moisture buildup and ensuring long-term durability.

Different types of underlay pose varying risks of condensation, with low resistance (LR) underlay potentially increasing condensation risk within the batten space. In contrast, high vapour resistance (HR) underlay, when applied, negates the need for a ventilated counter-batten space, provided adequate eaves and ridge ventilation are maintained, as per BS 5250 regulations.

Don & Low MultiTX Solar

The introduction of Don & Low’s MultiTX® Solar membrane means that builders now have a solution engineered to meet the demands of integrated solar roofs.

By providing a high vapour resistance air and liquid barrier, MultiTX® Solar offers a modern, cost-effective alternative to traditional roofing underlays, all while ensuring compliance with the latest regulations.

Based in Forfar, Scotland, Don & Low is a leading provider of roofing and walling membranes, offering innovative solutions to protect buildings from external weather conditions. The company has a workforce of over 350 employees and manufactures over 400 products.

For more information on MultiTX® Solar and Don & Low’s building envelope,
call 0808 169 4444 or visit the Don & Low website.

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