Common problems with shingle roofs.
Remove shingles for metal roof.
Answered 4 years ago by useyourbrain101.
Push the shingles down to the roof jacks.
Otherwise you will need to remove the shingles.
Continue tearing off the shingles and underlayment until you reach the roof jacks then start over at the top of the roof.
Adding additional layers of insulation can solve this problem but it will increase installation costs.
In my opinion going over the old shingles is worthy of consideration because of the benefits of doing so.
The shingles will roll up like a ball in front of the fork.
Remove roof shingles before installing a metal roof.
A metal roof is an alternative to a shingle covered roof but a metal roof can actually be installed over shingles.
Many big solar companies like sunrun tesla etc will not touch a metal shingles roof because they are unfamiliar with them.
Remove shingles in a 2 to 3 ft wide section as you work down the roof.
This can be a nuisance for homeowners.
Why remove shingles when installing a metal roof when there is no reason to do so.
A shingle style roof is the most popular choice.
To remove a metal roof simply reverse engineer the installation process.
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.
Votes there is absolutely no reason to remove a structurally sound asphalt roof to install a metal roof other than to add to cost.
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.
Metal roofs must be laid flat on a vapor barrier because steel will condensate if there s any air space underneath it.
It doesn t matter if the air space is a half inch or six inches because the condensation factor will remain the same.
The edges are typically held down with trim pieces that are fastened to the edges of the roof beforehand.
In a typical year approximately 90 of the roofs our company manufactures are installed over old shingles.
Tens of thousands of metal roofs have been done this way with no problems.
Put the steel down directly on a vapor barrier.
Metal roof over shingles condensation.
Metal roofing is installed in overlapping sheets.
However you should only install a metal roof over shingles if you have less than four layers of shingles on the roof.
The panels and trim are held in place by self tapping sheet metal screws installed with a drill driver.
So i recommend you speak with solar guys as well and pick out your solar company that will do good job give you decent price per watt i d say below 3 w is good for steep complex roofs and has good track record.
Every roof needs to be evaluated individually.