Timloc Underlay Felt Lap Vent (Pack of 10) 
Bond It Caulk-Mate One Hour Decorators Caulk - White EU4 
OX Tools Trade Heavy Duty Chalk Line Reel 30m / 100ft 
Roughneck® V-Series Axe - 20oz/0.6kg 
Code 7 Cast Lead - 760mm x 6m 
Soudal Water Stop Roof Repair Compound – Grey 4kg 
ALM Code 4 Milled Lead - 760mm x 3m 
Hambleside Danelaw Double Plain Tile Vent, TV10/9 - Slate Grey (Box of 5) 
Bond It Dec-Mate Flexible Filler - White EU4 
Timco Air Wedge 
Timloc Inline Slate Vent Black (Box of 5) 
Isoflex Liquid Rubber - 4.5L 
Bostik Fast-Tak Permanent Adhesive - 500ml 
Ronseal Precision Finish Brush - 1.5 Inch 
Everbuild Showerproof Bathroom Silicone – White 280ml 
Freeflow Round 112mm Gutter System 135° - Black 
Soudal 5 Min D4 Gel PU Wood Adhesive Trade - 290ml 
Soudal Soudafoam Window & Door Gun Grade – 750ml 
Cromar Vent 3 High Performance Breathable Membrane - 1m x 50m 
Bond It Felt Adhesive - Black 2.5L 
Soudal Orange Skeleton Gun - Up to 400ml 
BORA - PM-4550 Adjustable Speedhorse XT (Set of 2) 
Bond It Trowel Mastic - Black 1L 
Ronseal One Coat Stays White Radiator Paint - Gloss 750ml 
Code 8 Cast Lead - 914mm x 6m 
Timloc 1205 Underfloor Vent Horizontal Duct Adapter - 110mm 
Cromar Vent 3 Light Breathable Membrane - 1m x 25m 
Everbuild External Frame Sealant - White 290ml (Box of 12) 
Everbuild Everflex Fire Mate Intumescent Sealant – 295ml (Box of 25) 
Everbuild Everflex Mirror Mate Adhesive - White 290ml 
Hambleside Danelaw Double Roman Tile Vent, TV15/3 - Slate Grey (Box of 5) 
Freeflow 68mm Round Gutter Drain Pipe 112° Branch - White 
Everbuild Lumberjack 550 Floor Adhesive – 600ml 
Klober Profile-Line Adaptor & Flexipipe - KG979100 / KG979900 
ALM Code 5 Milled Lead - 914mm x 6m 
OX Trade Stubby Level - 100mm 
Soudal Trade All Weather Sealant - Clear 290ml 
Everbuild External Frame Sealant - Brown 290ml (Box of 12) 
Everbuild Stick2 Superglue De-Bonder - 20ml 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.
