Roof Tile Batten Gauge

Recalculate your tile gauge based on the number of battens specified in step 7.

Roof tile batten gauge.

The supplier of the tiles should recommend the spacing up the roof between the battens known as the gauge this usually varies according to the size of the tiles the pitch of the roof and the degree of exposure. The holing gauge can be calculated as. Battens should be fixed to rafters set at centres not more than 600 mm apart and should span at least 3 rafters. This gives 32 14cms which is the tile gauge you should use for the remaining battens to ensure correct spacing between them.

The gauge is in fact the same as the margin which is the length of the tile exposed. So using the previous example divide your roof height of 450cms by the batten number of 14. Not more than one in four battens should be joined over one truss for gauges over 200mm. Set the last batten at the ridge so that the ridge tiles will overlap the top course of tiles by at least 75mm.

To ensure this the battens should be at least 1 2m long. For example if the distance between the tops of the lower and upper battens is 204 inches and the maximum gauge of the tiles is 13 inches then the number of courses and strips of batten is 16 because 204 13 15 6. 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. Batten gauge length of slate headlap 2.

The batten gauge can also be calculated using the formula. The result is the number of courses of tile on the roof rounded to a whole number.