How To Overlap Metal Corrigated Roofs

Install the roofing screws vertically along each rib in the panel.

How to overlap metal corrigated roofs.

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. Continue onto the next rows. Make sure the panel is square to the roof line. Position the tape with the release backing on the top.

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. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. Measure the length of the. Sweep the metal roofing sheets of all dirt and debris with a push broom.

Lay and secure the first metal panel. 2 corrugated metal roof installation instructions. Any end laps must be supported by a suitable purlin. A corrugated metal roof is quieter than pvc when it rains.

Lay the remainder of the row. If you re installing a metal roof on a home without gutters you can overhang the panels by twice that amount. When the panel is laying flat on a surface the side that touches flat is the underlap side. On the eave side of the roof aim to overhang the panels by 1 to 1 5 inches.

Buy the metal panels. Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas. Fit the first sheet. Place the first screw.

Lay the roofing felt. How to install corrugated metal roofing. Finish the first side of the roof. 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.

Before you start to install corrugated metal roofing you need to figure out how much you need. Complete the first row. One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms.