Permavent Black Breather Membrane – 1m x 20m 
ALM Code 8 Milled Lead - 240mm x 6m 
Ronseal Ultra Tough Mattcoat Clear Varnish - 2.5L 
Everbuild Pro Fill - Light Grey 500g 
Ronseal Stays White 2in1 Paint & Primer - Satin 750ml 
Soudal Superglue Activator - 200ml 
EVO-STIK Sticks Like All Weather Adhesive - Clear 290ml 
Bond It Multi-Purpose Low Viscosity Spray Lubricant - 400ml Clear 
Everbuild Triple Action Wood Treatment – 5 Litre 
Everbuild Jumbo Mitre Fast Kit Superglue & Activator 
Timco Pipe Shears 
Klober Profile-Line Flat Tile Vent - Terracotta KG9856-3-0152 (Box of 10) 
OX Trade Jab Saw - 6.5" / 165mm & Holster Pack 
Code 5 Cast Lead - 300mm x 6m 
Everbuild PVC Hazard Tape - Black/Yellow (50mm x 33m) 
Code 7 Cast Lead - 850mm x 6m 
Klober Regent Tile Vent KG6084, Grey 
ALM Code 4 Milled Lead - 180mm x 3m 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.
