Battens may be hidden by the roof covering but their purpose is to provide a reliable anchor that tiles or slates can be fixed securely to.
How to set out battens for a slate roof.
What roof pitch do i need for what slate size generally speaking 20 degrees is the lowest advisable pitch for a slate roof depending on the size of the slates and how much that the roof is exposed to.
The batten gauge can also be calculated using the formula.
The slate or tile manufacturer or supplier will specify the spacing of the battens up the roof for the particular type of covering this spacing is referred to as the gauge the gauge may depend upon the pitch of the roof and the amount of.
The next thing to do is to work out the spacing for the battens up the roof.
Roof battens and gauge the gauge is the space between the roof battens this will set the overlap of your chosen slate in most cases.
This table allows you to confirm the correct batten gauge distance between battens for your chosen slate length and lap.
Spacing the battens.
How to space roof tiles and space roof battens or laths.
Roofing battens are nailed into the rafters or roof joists or trusses and provide support for the roof tiles or slates.
It also allows you to determine the holing gauge distance from hole to tail of slate and the number of linear metres of batten per m 2 of roof.
The updated bs 5334 code of practice for slating and tiling specifies a number of batten sizes based upon the span of the rafters and the product being used.