Timco Collated Drywall Self Drilling Screws 
Ronseal Trade 10 Year Woodstain - Dark Oak 2.5L 
Code 7 Cast Lead - 510mm x 6m 
Bond It Rubber Bitumen Emulsion - Black 25L 
Everbuild Triple Action Wood Treatment – 1 Litre 
Everbuild Smart Tack Handy – 500ml (Box of 12) 
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
