Everbuild Triple Action Wood Treatment – 5 Litre 
Thompson's Emergency Roof Seal - Black 1L 
Everbuild Black Jack 902 Bitumen & Flashing Primer – 1 Litre 
Code 4 Cast Lead - 510mm x 3m 
Timloc Underlay Felt Lap Vent 
Bond It Power Frost Premium Quality Concentrate Additive - 1L Pale Blue 
Permavent Easy Slate 600 - Box of 100 
FloPlast Half Round Downpipe Shoe, Brown – 68mm 
Bond It Cover-It Hardfloor & Glass Protector - Blue 625mm X 25M 
Soudal Soudabond 265 Classic Spray - 500ml 
Colron Liquid Scratch Cover - Medium 14ml 
Soudal Silicone Sealant Remover, Clear - 100ml 
FloPlast Half Round Pipe Socket, Brown 
Code 8 Cast Lead - 1600mm x 3m 
Bond It Monster Water Resistant Tape - 48mm x 11m (Black) 
Bond It Power Proof Concentrated Waterproof Render Admixture - 1 Litre 
Right Hand Klober Contract Dry Verge Unit Grey 
OX Pro 20oz Forged Steel Hatchet 
Everbuild No Waste Foam – 750ml 
Everbuild Lumberjack 30 Minute PU Wood Adhesive Gel - 310ml (Box of 12) 
Easy-Trim Universal Dry Verge System Terracotta (Box of 50) 
Code 7 Cast Lead - 150mm x 6m 
Timloc Interlocking Plain Tile Vent Grey (Box of 12) 
Ronseal Quick Drying Smooth Finish Filler - 330g Geotec Felt
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Geotec Felt
Where your lead protects your roof from the weather, Geotec felt protects the lead from the roof. It does this in three ways. Firstly, lead laid nakedly on materials like concrete or stone may be at risk of corrosion, while lead on timber may slowly be leached away by moisture. This may start to damage and destroy the lead layer. Geotec felt serves as an intermediate layer that will guard the lead from moisture or corrosion.
Secondly, Geotec felt decreases drag arising from thermal movement. Lead expands and contracts as the temperature changes it. However, often the materials it is laid on do not. In addition, they may be rough or have an uneven surface. This causes damage as the lead strains against the material holding it up. Geotec felt provides a gentle, smooth surface for lead to thrive on, letting it expand and contract safely.
Thirdly, geotec felt is porous and permits airflow. This allows moisture to be dried out and ventilates the underside of the lead and the topside of the materials the lead would otherwise rest on. This reduces damp, and therefore the chance of rotting or mould. Geotec felt can therefore be an important asset in reducing roof condensation.
