How Much Overhang For Roof Tiles

Too much overhang and the shingles could blow off in high winds.

How much overhang for roof tiles.

Once up the ladder i was able to see the new guttering fascia installation done about 18 months old close up for the first time and i m worried about it. You can add 3 to 5 inches to the top. Metal is usually installed on rafters or strip sheathing rather than the solid decking used under other materials. A shed overhang is an easy and effective way to protect your shed.

Set the last batten at the ridge so that the ridge tiles will overlap the top course of tiles by at least 75mm. The edge of the shingles should hang over a roof between an inch and an inch and a half or between a half inch and three quarters of an inch if drip edge flashing is installed. Too little can allow water to seep into rake or fascia boards. This is normally specified with the tile manufacturer and it s advisable to check how much they say a roof tile should overlap normally on a smooth faced tile the overlap is 75mm 3 and on granular or sandfaced tiles its 100mm 4 however if the roof is shallow pitched is facing a windy direction or will be prone to moss build up it may be a good idea to increase the lap by another 25mm or 1.

A typical metal roof overhang may be 2 to 4 inches or even less. Looking right down the line of the guttering the gap between the end of the last roof tile and the outer edge of the guttering varies from around an inch and half to in some cases millimetres. Some slight overhang is recommended in conjunction with a drip edge flashing to prevent water from getting under the roofing and onto underlying wood. Here phil explains how much overhang a roof should have at the gutter.

This will keep rain away from your shed. The bottom tile or slate of the roof covering should project at least half way into the gutter the ideal distance is between half way and two thirds of the way over. Setting out up the roof gauge set the first batten at eaves to allow the tails of the eaves course tiles to overhang the fascia by 40 to 45mm ie. Clay tiles 6 15 600 1 500 concrete tiles 4 10 400 1 000.

Just short of the centre of the gutter.