3 install 1x4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1x4 purlins over the shingle roof.
Installing metal roof over shingles youtube.
This is by far the most common way to install a metal roof.
However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof.
Make sure roof is square.
Metal roofing 101 diy steel roofing installation over shingles subscribe.
Whether you are looking to install a metal roof on a shed or a house it s important to know the difference in the various types of metal roofs available.
The vast majority of installations of the metal roofing systems produced by my company are over existing shingles.
The low weight of metal roofing is one thing that encourages this.
Otherwise you will need to remove the shingles.
A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.
Steel shingles weigh about 1 4 what asphalt shingles weigh and aluminum shingles weigh about 1 8 what standard shingles weigh.
Work at a comfortable steady pace trying not to rip up or carry off too much old roofing at once.
As long as the plywood under the shingle roof is in good condition this way can provide many benefits.
In this video i cover measuring the roof figuring the metal th.
Although you can install corrugated metal roofing over shingles for the best foundation it is recommended that all the old roofing be removed.