FloPlast Half Round Gutter 135° - White 
Standard Brush 4-Inch 
Everbuild Mitre Fast Activator – 200ml (Box of 12) 
Soudal Construction Silicone, Grey - 290ml (Box of 12) 
ALM Code 7 Milled Lead - 210mm x 3m 
Klober Permo Ultra 120 - 1m x 50m 
Lead Sheet Cleaner - 1 Litre 
Timloc Double Pantile Tile Vent Brown (Box of 6) 
Manthorpe Felt Lap Vent is a refurbishment product designed to increase the amount of ventilation into existing roof spaces. Furthermore, Manthorpe Felt Lap Vent is usually fitted retrospectively to properties with additional loft insulation recently installed. To add, Felt Lap Vent helps to combat the problem of condensation builds up in any roof space with a lapped felt/membrane construction.
The specifier should ensure that the opening of felt laps on the property will not adversely increase the wind uplift load on the tiles/slates or the driving rain resistance of the roof
