Asphalt shingles are the most popular roofing material.
Metal roof on top of shingles.
Use 1 4 inch metal wood screws to attach the metal sheets to the wood slat board base.
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.
Metal roofing sheets have to be installed one at a time.
Common problems with shingle roofs.
As long as the plywood under the shingle roof is in good condition this way can provide many benefits.
This is by far the most common way to install a metal roof.
Install metal roofing sheets.
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.
Fiberglass core or matting an asphalt coating and a ceramic or stone granule surface give this material its durability.
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.
3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof.
The purlins are screwed or nailed down to the roof deck depending on how the metal roofing manufacture has testing for their roofing panels and then the metal is installed to the purlins.
A shingle style roof is the most popular choice.
Place a sheet from top to bottom on a section of the roof.
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.
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.
Unlike most roofing materials metal roofs can be noisy especially when it rains or hails.
The second way to install a metal roof over a shingle roof is with the use of purlins or battens.