How To Lap A Metal Roof

You will use metal roofing screws to secure the metal panels to the sheathing.

How to lap a metal roof.

A ridge cap is normally installed only after all metal roof panels and any other trim are in place. Take care the first piece is aligned precisely perpendicular square to the edge. Position the tape with the release backing on the top. Use your neoprene washer head screws to secure the metal to the sheathing.

And for any exposed fasteners try to avoid over tightening them. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. When the panel is laying flat on a surface the side that touches flat is the underlap side.

Because of this you should start at the lowest part of the slope and work upward. 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. Install the roofing screws vertically along each rib in the panel. Place the first screw.

This helps to prevent water infiltration. In other words it s put on last the cap to the job. Moreover try to ensure that the screws are all aligned evenly. Metal roofing ridge cap is the trim placed along the roof s ridge the peak where two roof slopes meet up.

2 lay 6 inch wide butyl tape over all horizontally lapping end seams. The opposite end the overlap side will be elevated slightly above the surface. Try to space the screws about 12 inches apart down the entire piece of metal. Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm.