Metal Roof End Lap

Cladco stitcher screws can be used at 600mm spacings down the sheet which will then consolidate the join between sheets with lapping tape between.

Metal roof end lap.

Some shapes of steel deck profiles are not able to overlap. The information contained within this technical paper is intended to provide generic guidance on improved sealing of end lap details. Because of this you should start at the lowest part of the slope and work upward. Side end laps benefit from mastic lapping tape and stitcher screws these materials provide a weather proof joint on side laps helping to protect the interior from the elements.

The information has been gained through a study. How to lap metal roofing a basic rule of thumb for installing metal roofing is that the piece of roofing higher up on the slope should always overlap the one below it. Cladco mastic tape should be installed along the crest of the sheeting. This comes following a study of built up and composite roofing profiles that are most commonly used in the uk.

Sealing of typical 150mm end lap and side lap details for metal to metal through fix built up and sandwich panel roofing systems and associated grp rooflight materials. The metal cladding and roofing manufacturers association mcrma has produced new guidance on effective sealing of end laps in metal roofing constructions. The overlapping of neighboring steel deck panel ends perpendicular to the flutes on the steel deck.