-Preparing for the support surface. Side lap one corrugation checked. head lap 15cm. drill tools used for zinc plated nails for sheets to be secured. Insured the level surface that there are no rough that can affects irregularities that can damage the sheets and comprise the efficiency of the product. the sheets must not project at the eaves by more than 5cm. you can use a batten with center to center distance depending on the load that the roof has to bear.
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