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.
How to set out a roof for tiling.
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.
Then determine the position of the highest batten at the top typically the top of the uppermost row of slates tiles should be at least 75mm 3 inches under the edge of the ridge tile.
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.
Use a hammer and nails to attach a second short strip of batten further up the roof the distance between it and the first batten being the distance calculated in step 3.
Just short of the centre of the gutter.
After you have determined the distance between the first two battens measure the distance and set battens using that.
How to space a tiled roof 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.
Next place your two tiles one on top of the other loose onto the battens without anything being fixed.
For example 25 x 50mm battens are required for single lap modern roof tiles laid on rafters with a 600mm span.
A minimum of a 3 inch overlap is required for the tiles.
The supplier of the tiles should recommend the spacing up the roof between the battens known.
Step 5 hold a final short strip of batten across the top of the roof just below the ridge and rest a tile on it.
Each plain tile is 165mm wide and can have up to 3mm gap between them.
Roofing battens are nailed into the rafters or roof joists or trusses and provide support for the roof tiles or slates.
Use two tiles to determine the spacing required for the battens.
Roofing with plain tiles positioning the battens.
Having set out and nailed all the battens the setting out of tiles on each batten should be considered.
Make sure the tile lugs are seated snuggly onto the top edges of the battens.
Plain tiles are laid on the battens in a brick bond pattern i e.