Can you avoid tearing off your old asphalt shingle roof by putting a steel roof over it.
How do i install a metal roof on my house.
Then cover the entire roof with a layer of insulation and secure it with a staple gun.
Try to space the screws about 12 inches apart down the entire piece of metal.
Can you put steel roofing over asphalt.
Most codes now allow no more than two layers of roofing before requiring a complete tear off.
Install the roofing screws vertically along each rib in the panel.
To install corrugated roofing start by cutting your panels to length with an angle grinder.
Next use 1 inch nails to secure some metal edging to the perimeter of the roof.
Here are some pros and cons.
If you want to install steel over asphalt your best choice for installing metal roofing is to use a steel shingle system like the one shown instead of the more common and more expensive standing seam steel.
Next pre drill holes on the end and side ridges of the panels spacing the holes 6 to 8 inches apart.
You will use metal roofing screws to secure the metal panels to the sheathing.
Be sure the larger edge is laid so that the small edge of the next panel will overlap it.
And for any exposed fasteners try to avoid over tightening them.
5install metal panels or shingles.
How to install a metal roof on a house covering your existing asphalt shingles with metal roofing might be worth the expense.
A benefit to doing it this way is that you can see if there is any rotten plywood that needs to be replaced before installing the new roof.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.
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.
Moreover try to ensure that the screws are all aligned evenly.