Watershed Roofing Kits consist of corrugated roofing tiles, each one made from bituminous material 3mm thick and formed into the classic corrugated shape of a series of ridges and valleys. With tiles supplied already cut to size, installation is rapid since there is no measuring or cutting to do as there is with roofing felt. The Watershed tiles overlap each other both lengthways and widthways creating a simple but very effective watertight seal. Rainwater is channelled down into the valleys of the tiles and then down the slope to the eaves or gutters, keeping the roof of the shed snug and dry. A complete kit of parts, all you need to re-roof your building - roof tiles, ridge tiles, timber battens, screws, screw caps -suitable for use on pent or apex roofs with a pitch of 10 degrees or greater on sheds, summerhouses, workshops, garages, playhouses, log cabins, lodges, bike stores, shelters, beach huts, logs stores etc - water-repellent corrugated bituminous tiles overlap each other lengthways and widthways for a water tight seal, whilst channelling the water down the slope - lightweight and easy to handle - guaranteed against weathering for 10 years - maintenance free - easy-to-handle, light-weight flexible tiles - max weight 2.0kg per tile - manufactured in compliance with EN534:1998 Corrugated Bitumen Sheets and ISO14001:2004 Environmental standards - improves the durability of the roof – rain water runs downs the valleys created by the tiles - can be used on buildings with or without guttering.