How To Overlap Metal Corrigated Roofs

Lay the roofing felt.

How to overlap metal corrigated roofs.

One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms. 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. Complete the first row. 2 lay 6 inch wide butyl tape over all horizontally lapping end seams.

Lay and secure the first metal panel. If you re installing a metal roof on a home without gutters you can overhang the panels by twice that amount. Continue onto the next rows. Overlapping anti condensation lined sheets.

Fit the first sheet. Install the roofing screws vertically along each rib in the panel. Position the tape with the release backing on the top. Finish the first side of the roof.

How to install corrugated metal roofing. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Place the first screw. On the eave side of the roof aim to overhang the panels by 1 to 1 5 inches.

The opposite end the overlap side will be elevated slightly above the surface. Lay the remainder of the row. Any end laps must be supported by a suitable purlin. Buy the metal panels.

Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas. Make sure the panel is square to the roof line. A corrugated metal roof is quieter than pvc when it rains. When the panel is laying flat on a surface the side that touches flat is the underlap side.

Before you start to install corrugated metal roofing you need to figure out how much you need. 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. 2 corrugated metal roof installation instructions.