This is not required for dry fix systems.
Setting out a roof for tiles.
Just short of the centre of the gutter.
Start at the lower edge of the roof nailing the batten into place at the centre of the rafter.
For example 25 x 50mm battens are required for single lap modern roof tiles laid on rafters with a 600mm span.
Joints should be directly over rafters with the batten square cut tightly butted and skewed nails.
Consider the impact of weight.
Each plain tile is 165mm wide and can have up to 3mm gap between them.
Next place your two tiles one on top of the other loose onto the battens without anything being fixed.
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.
If a batten end is to be set in mortar be sure an appropriate treatment has been applied.
Having set out and nailed all the battens the setting out of tiles on each batten should be considered.
Firstly get two of your roof tiles and either two full battens or two offcuts of batten and place them onto the roof one above the other.
Start by establishing the position for the lowest batten for the slates tiles on the roof allow for the overhang of.
Set the last batten at the ridge so that the ridge tiles will overlap the top course of tiles by at least 75mm.
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Make sure the tile lugs are seated snuggly onto the top edges of the battens.
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.
Roofing with plain tiles positioning the battens.
The supplier of the tiles should recommend the spacing up the roof between the battens known.
Roofing battens are nailed into the rafters or roof joists or trusses and provide support for the roof tiles or slates.
To put it in simplest terms a basic asphalt shingle perhaps the most common roofing material in america will typically place a weight of less than 3 pounds per square foot on a roof.
Then determine the position of the highest batten at the top typically the top of the uppermost row of slates tiles.
Concrete tiles which are usually lighter than clay tiles can easily place over 10 pounds of weight per square foot on a roof.
The first course of tiles should be set out to equalise all the gaps between the tiles start and finish at corner or abutments and hopefully line up with the sides of window openings.