Install the roofing screws vertically along each rib in the panel.
How to install corrugated steel roof panels on a porch.
Snap a vertical chalk line 1 4 inch from the rake edge of the roof using a chalk box.
Lay and secure the first metal panel.
Lay the roofing felt.
Next pre drill holes on the end and side ridges of the panels spacing the holes 6 to 8 inches apart.
2 corrugated metal roof installation instructions.
Buy the metal panels.
Be sure the larger edge is laid so that the small edge of the next panel will overlap it.
Finish the first side of the roof.
Beginning at the outside edge of your roof place each panel directly onto the purlins that are attached to the roof trusses.
To install corrugated roofing start by cutting your panels to length with an angle grinder.
The sheets should overlap by at least four inches add a bead of caulk where they overlap and at the other end of the building ensure there s an overhang of two inches.
Secure the sheets into place with screws.
Always begin working at the point with the longest peak to eave distance.
Take care the first piece is aligned precisely perpendicular square to the edge.
The piece that allows us to join the two different slopes is the pitch transition trim.
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 line.
Ensure that the line is square with the eave.
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.
This allows water to flow off the upper panels out over the trim onto the lower panels and exits the roof at the eaves.
We re going to install it over top of the panels that have already been installed on the lower slope.
Install the first metal panel on the low end of the roof square to the eave.
Begin on the left side of the roof working to the right.
Add the metal panels.
Complete the first row.