Take care the first piece is aligned precisely perpendicular square to the edge.
How to start screws into a metal roof panel.
Place the cover over the vent opening and screw into place.
Absolute steel recommends using metal self tapping screws with thin washers that have been properly compressed to ensure a secure seal.
Installing the metal roofing screw in the high of the corrugated roofing panel as shown below.
Beginning at the outside edge of your roof place each panel directly onto the purlins that are attached to the roof trusses.
There are two schools of thought when it comes to corrugated metal roofing screw placement both are correct.
Moreover try to ensure that the screws are all aligned evenly.
Proper metal roofing installation begins with the use of the right equipment starting with the screws used to anchor your panels or shingles to the structure.
In addition if the metal roofing panel is being installed over metal purlins the spacing of the purlins might make it tricky to pre drill the sheeting in advance.
Next pre drill holes on the end and side ridges of the panels spacing the holes 6 to 8 inches apart.
Therefore you do not need to pre drill the holes.
Add the metal panels.
The advantage to this method is the screws are exposed to less water and debris.
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.
Try to space the screws about 12 inches apart down the entire piece of metal.
Start from the top of the roof and remove the old shingles along with the flashing underlayment and vents.
Always begin working at the point with the longest peak to eave distance.
You will use metal roofing screws to secure the metal panels to the sheathing.
To install corrugated roofing start by cutting your panels to length with an angle grinder.
And for any exposed fasteners try to avoid over tightening them.
This means that the screw will drill its own hole through the metal roofing panel and into the metal or wood substrate.
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.