According to bs 5534 the appropriate batten size will depend on the span of the rafters and the roof covering.
Installing battens for metal roof.
Take care the first piece is aligned precisely perpendicular square to the edge.
Not all metal roofs can be installed over battens like that.
Spacing of furring strips for metal roof when installing a metal roof over an existing roof insulate the spaces between the wood strips with rigid insulation to prevent condensation before.
Your attic ventilation and insulation will also help with summer energy efficiency.
If you want to add a metal roof to your structure metal battens will be a part of the project.
For example horizontal battens run.
Whereas many older metal roofs or metal roofs on larger buildings have been successfully installed over battens rather than solid decking it is the clear preference for residential applications that metal roofing always be installed over solid decking to avoid dangerous and damaging condensation issues.
If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch.
This involves putting down vertical battens first attaching them through the roof deck to the rafters.
By design some metal roofs must be installed over battens some must never be installed over battens and some can be installed over battens or over solid decking.
How you install battens can affect the drainage efficiency.
So first and foremost it s critical to choose the right product and install it according to manufacturer s specifications.
We frequently are asked whether metal roof should be installed on batten s or direct to the roof deck.
Solar panel installation on a batten roof means that the deck and underlayment is protected from penetration.
Before installing the battens be sure to check you have the size and spacing right as these can have a direct influence on the weather tightness of the roof as well the finished appearance.
Always begin working at the point with the longest peak to eave distance.
Before even considering it make sure the product you re installing is approved by its manufacturer for that type of application.
Battens elevate the roof tile off the roof deck and this ensures that water drains off the roof.
Battens are almost always used on modern metal roofs.
One effective way to use battens is to cross batten.
Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm.
And then you put down horizontal battens for the roof panel attachment.
Place corner pieces where panels will meet bends at the edge of the roofing.