In terms of performance many homeowners choose a steel roof making it the most popular option when it comes to creating a metal roof over existing shingles.
Metal roof over shingles or not.
It provides a solid flat surface to attach the new metal roof to it creates an air gap between the back of the metal and the shingle roof which allows for airflow.
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.
Unlike most roofing materials metal roofs can be noisy especially when it rains or hails.
Disadvantages of metal roofs.
Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof.
You might not be aware of what goes on over your head but it s always important to check your roof s conditions now and then.
Additionally the design of many metal roofs especially the heavier shingle profile metal roofs encourages this practice as well.
What s the difference between an asphalt shingle and metal roof.
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.
This method has its benefits as well.
Even though you might be content with a fine.
The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacturer has testing for their roofing panels and then the metal is installed to the purlins.
When it comes to your roof you need to have the best quality materials for it to be kept in top shape.
Metal roofs generally can run from 120 to 900 per 100 square feet one 10 foot by 10 foot area or a square of material while asphalt shingles will be between 100 and 200 per 100 square.
Installing metal roofing over shingles is the best solution.
Advantages of metal roofs over shingles.
A shingle style roof is the most popular choice.
I do feel that in all cases underayment should be installed first over the old shingles.
Metal roofs over shingles will also provide an extra layer covering your home helping to further insulate it.
This can be a nuisance for homeowners.
Asphalt shingle roofing is a dominant material for residences.
The second way to install a metal roof over a shingle roof is with the use of purlins or battens.
By placing metal roofing over shingles you can save in the labor costs of ripping them off while also preventing them from being thrown into landfills.
Common problems with shingle roofs.
However metal roofing is surging in popularity as more aesthetic options become available.
The low weight of metal roofing encourages its installation over old shingles.