Headlap Slate Roof

Most significant is the environment with the two main factors being exposure to wind and rain.

Headlap slate roof.

The most commonly used slate size in southern england is 500x250mm and 400x250mm in scotland and the north of england. Headlap is a fundamental necessity on slate roofs that are laid with a shingle style the most common installation method in the. Holing gauge batten gauge headlap 10mm. 4 traditional roofing 2007 joseph jenkins inc.

There are few details on a slate roof installation that if done wrong will cause the entire roof to be condemned and have to be removed and done all over again. Roofs shallower than 4 12 should not be made of slate according to traditional roofing. Once you have chosen pitch and headlap you ll be able to determine the number of slates you ll need per m 2 using our coverage tables. The minimum roof pitch for natural slates is 20 degrees bs 5534 2014 page 45 depending on size of slate see table above bs 5534 2014 page 45 table 9.

These are all words that should send a chill up the spine of any good slater. Notes from bs 5534 2014. Minimum recommended headlap mm unit 15 16 airfield approach business park flookburgh grange over sands cumbria la11 7ng england tel. Headlap exposure and offset.

Minimum slate headlap moderate weather this table of slate overlaps and roof angles shows common sizes of roofing slate and the recommended slope for the corresponding slate size. Most stock slates will be pre holed at 75 90 or 100mm allowing you the versatility of different pitches commonly 25 degrees in moderate exposure zones and 30 degrees in severe. There are few details on a slate roof installa. If your roof is shallower between 4 12 and 8 12 the slates should have a headlap of at least four inches.

Headlap and exposure are related to each other and the starting point for determining both is roof slope.