The good news is that there are many different solutions in terms of installing metal roofing panels including tin aluminum and steel.
How to install steel roofing on a house.
Then cover the entire roof with a layer of insulation and secure it with a staple gun.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.
Before you install metal roofing repair any damage to the wood under the shingles.
Next use 1 inch nails to secure some metal edging to the perimeter of the roof.
Install the roofing screws vertically along each rib in the panel.
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.
In many cases it makes sense to remove an old or dilapidated roof and install a metal roof that is better able to withstand the elements.
Be sure the larger edge is laid so that the small edge of the next panel will overlap it.
In a standing seam roof long single panels run vertically all the way from the eave to the ridge.