How To Overlap Metal Corrigated Roofs

When laying the metal panels on the roof the overlap ridge of the new panel should straddle the underlap ridge of the panel before it.

How to overlap metal corrigated roofs.

Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Before you start to install corrugated metal roofing you need to figure out how much you need. Finish the first side of the roof. 2 lay 6 inch wide butyl tape over all horizontally lapping end seams.

Position the tape with the release backing on the top. Measure the length of the. Make sure the panel is square to the roof line. 2 corrugated metal roof installation instructions.

Lay and secure the first metal panel. Place the first screw. Buy the metal panels. The opposite end the overlap side will be elevated slightly above the surface.

Fit the first sheet. How to install corrugated metal roofing. A corrugated metal roof is quieter than pvc when it rains. 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.

When the panel is laying flat on a surface the side that touches flat is the underlap side. One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms. Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas. Complete the first row.

Sweep the metal roofing sheets of all dirt and debris with a push broom. On the eave side of the roof aim to overhang the panels by 1 to 1 5 inches. If end laps are required you should allow 300mm minimum overlap sealed with butyl sealant tape 10mm from the edge of each overlapping sheet as well as in the middle of the overlap. Overlapping anti condensation lined sheets.

Continue onto the next rows. Any end laps must be supported by a suitable purlin. Lay the remainder of the row.