Underlays form an important second line of defence for all tile and slate pitched roofs. It also becomes a primary weather shield during roof construction. A well-designed membrane prevents heat loss, adding to the heat efficiency of any modern or renovated building.
Marley’s Universal lightweight underlays incorporate a range of useful features to ensure installation is compliant with the latest requirements of BS 5534. As well as being designed for use in all five UK wind zones, the underlays are marked with guidance lines for straight laying and to correspond with the different overlap lengths set out by the British Standard, making it easier for contractors to comply.
In addition, Marley membranes are designed to integrate either as part of a complete Marley roof system, or used in conjunction with other manufacturers’ tiles and slates.
For more information about Universal Underlays by Marley, click here