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.
Setting out slate roof battens.
The next thing to do is to work out the spacing for the battens up the roof.
Spacing the battens.
Now the roof has been set out correctly with the battens at the right distance apart its time to lay the slates.
Lay the roof 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 batten gauge can also be calculated using the formula.
Holing gauge mm battening gauge mm m batten per m2.
Battens also play a part in ensuring the rigidity durability and weather tightness of the finished 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.
Just short of the centre of the gutter.
Slate length mm battening gauge mm m batten per m2.
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.
Start by laying the under eaves course creating a staggered pattern for stability a 5mm gap between each slate is required to allow for natural expansion.
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.
Holing gauge mm battening gauge mm m batten per m2.
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.
Set out the first second and all the rest of slates on a pitched roof.
This table allows you to confirm the correct batten gauge distance between battens for your chosen slate length and lap.
Set out the first second and all the rest of slates on a pitched roof.
