How To Overlap Metal Corrigated Roofs

The opposite end the overlap side will be elevated slightly above the surface.

How to overlap metal corrigated roofs.

Continue onto the next rows. Lay the roofing felt. 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.

Position the tape with the release backing on the top. 2 lay 6 inch wide butyl tape over all horizontally lapping end seams. Install the roofing screws vertically along each rib in the panel. 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.

Lay the remainder of the row. Lay and secure the first metal panel. Complete the first row. Make sure the panel is square to the roof line.

2 corrugated metal roof installation instructions. Fit the first sheet. Any end laps must be supported by a suitable purlin. How to install corrugated metal roofing.

Overlapping anti condensation lined sheets. On the eave side of the roof aim to overhang the panels by 1 to 1 5 inches. 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. Place the first screw.

Sweep the metal roofing sheets of all dirt and debris with a push broom. Be sure the larger edge is laid so that the small edge of the next panel will overlap it. 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. One downside is that the metal sheets have a susceptibility to denting both in installation and during hailstorms.

Finish the first side of the roof. A corrugated metal roof is quieter than pvc when it rains. Metal roofing resists rot is not susceptible to insect damage and is non combustible a boon in fire prone areas.