Everflex Premium+ 450 Builders Silicone – Oak 300ml (Box of 25) 
Everbuild Mitre Fast Activator – 200ml (Box of 12) 
Code 3 Cast Lead - 914mm x 6m 
Everbuild Showerproof Bathroom Silicone - Clear 280ml (Box of 12) 
42 x ERidge Dry Fix Ridge System Black – 6m Kit 
Timloc Double Pantile Tile Vent Terracotta (Box of 6) 
Chesterfelt Polyester Reinforced Shed Roofing Felt - Green 10m x 1m 
Everbuild Everflex 200 Contractors LMA Silicone - Brown 295ml 
Bond It Trowel Mastic - Black 5L 
Timco 30mm Cladding Pin - 250 Pieces 
Ronseal One Coat Stain Block - White 2.5L 
OB41 Foaming Glass Cleaner - 400ml 
Ronseal Stays White 2in1 Paint & Primer - Satin 750ml 
OX Pro Mortar Spike, 300mm 
OX Pro Mini Square Mouth Shovel 
Bond It Bitumen Primer - Black 25L 
Soudal Soudalead PB Lead Sealant - Grey 300ml (Box of 12) 
Timloc Underlay Felt Lap Vent (Pack of 10) 
ALM Code 4 Milled Lead - 180mm x 3m 
Ronseal One Coat Stain Block - White 750ml 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.
