But some steel shingle manufacturers offer do it yourself systems that cost about the same as an installed asphalt roof.
Can metal roofing be put on top of shingles.
Can you put metal roof over shingles.
Consult the guide for your shingle brand to determine the specific method of installation required to preserve the warranty.
Finally in some re roofing projects a metal roof is so light roughly one third the weight of asphalt that it can be installed directly overtop asphalt shingles without overburdening the roof.
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.
Finally install a drip edge at the edge of the roof on top of your underlayment.
Need a new roof.
Installing a metal roof over shingles can also result in an increased chance of trapped water vapor and moisture between the new roof and old roof resulting in new mold and rot.
These systems aren t attached to a frame but instead install directly on the old roof.
However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
Start on the lower edge of the roof install the starter shingles by nailing them down using roofing nails.
Most codes now allow no more than two layers of roofing before.
A metal roof can be installed over a shingle roof but you ll need to make sure the plywood under your shingle roof is in good enough shape to handle a new metal roof over top.
Can you avoid tearing off your old asphalt shingle roof by putting a steel roof over it.
Finally the preparation is over you can now install the shingles.
Install the roof shingles.
A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.
1 remove the shingles before installing the metal roof the first way to install a metal roof over shingles is by completely removing the old shingles before installing the new metal roof.
Most metal shingles will be attached to the roof using metal shingle clips but metal roofing shingle installation can be system specific.
By removing the old roof before the new roof s installation you are able to give the underlayment a thorough inspection to ensure there are no damages that could.
Can you put metal roof over shingles.
Here are some pros and cons.
Otherwise you will need to remove the shingles.
Choosing to install a metal roof this way can save you some dough and garner all of the benefits of a metal roof in the humid climate of florida.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.