Total linear run of tile batten in metres.
Roof slate batten gauge.
The result is the number of additional battens you require.
Holing gauge mm battening gauge mm m batten per m2.
Should you need to re hole slates firstly we need to know the gauge calculate this by using the maths below.
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Batten gauge length of slate headlap 2.
The most commonly used slate size in southern england is 500x250mm and 400x250mm in scotland and the north of england.
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Measure the distance from the top of the lowest batten to the top of the highest batten.
Measure the height of the roof from the top of your second batten to about 30 millimetres short of the top of the roof.
Holing gauge mm battening gauge mm m batten per m2.
For a 500mm long slate with a 100mm headlap the gauge is 500 100 400 2 200 so we know the gauge is 200mm.
Arrange the second batten above the fascia batten to the tile gauge recommended by the tile manufacturer.
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The slate or tile manufacturer or supplier will specify the size of battens to be used typically this would be 40 x 20mm 1 5 x inch but where the horizontal gaps between rafters is large or the slates tiles are heavy then bigger battens may be needed.
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The supplier of the slates should recommend the spacing up the roof between the battens known as the gauge this usually varies according to the size of the slates the pitch of the roof and the degree of exposure.
Divide the distance by the maximum gauge of the tiles being used and round the result up to the next largest whole number.
Slate length mm battening gauge mm m batten per m2.
Divide your height measurement by your tile gauge.
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For example 25 x 50mm battens are required for single lap modern roof tiles laid on rafters with a 600mm span.
Roofing battens are nailed into the rafters or roof joists or trusses and provide support for the roof tiles or slates.
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Holing gauge batten gauge headlap 10mm.
Please enter the dimensions in the white fields below and click calculate to show the results.
Holing gauge for holing slates.
Tile batten gauge for slate.
The holing gauge can be calculated as.
The gauge is in fact the same as the margin which is the length of the slate exposed.
The result is the number of courses of tile on the roof rounded to a whole number.
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