Roofing Base Layers from Marley

The secondary line of defence is the primary role of the roof underlay. Marley vapour permeable underlay is suitable for all UK wind zones to BS5534 standard and manufactured to present an ultra-strong and durable UV resistant layer. Our membranes also boast a variety of well-designed features to ensure correct and consistent installation to British Standard. Whilst the Marley non-breathable underlay offers exactly the same benefits, it is also an excellent lightweight alternative high-performance membrane. Both Marley roofing underlays are BBA approved.  

The role of battens in roofing is crucial as it offers a fixing point for your chosen roofing material. Marley’s JB Red Batten is produced with stability and accuracy in mind; it is manufactured from slow-grown, high-grade timber, then kiln dried and machined to a consistent 25mm thickness. The manufacturing process, treatment, and marking fulfil all requirements of BS5534:2014 and BS8417:2011 and is further independently assessed by BBA and certified accordingly. It also carries 60-year desired service life against insect attack and rotting fungi.