This allows the new underlayment to act as a line of defense in the event that water somehow gets under the metal roof.
Florida allow metal roof over shingles.
Also normal wear and tear over time requires that roofs be replaced.
Some people think that they can just install the metal roofing right over the old shingles roof without any barrier in between but this is highly not recommended.
Whether you have small areas of damage or if your entire roof is old you need to learn about florida roofing laws.
In the state of florida.
The second way to install a metal roof over a shingle roof is with the use of purlins or battens.
The first one being that the new underlayment will act as a second line of defense in case water would to somehow get underneath the metal roof.
There are really two ways to install a metal roof over a shingle roof.
Over time if there wasn t a buffer in between the shingle granules would wear away at the back of the metal roofing panels.
Though they are often initially more expensive metal roofs can withstand harsh weather conditions better than any other type of roof.
This is the minimum that needs to be done.
In florida which annually experiences hurricanes and serious storms it is common for homeowners and business owners to experience roof damage.
Installing metal roofing over shingles.
On has the metal expands and contracts due to weather changes the metal will actually move.
The state of florida has certain regulations on when a roof needs to be torn off before being replaced versus when it will allow the existing roof to be covered by new roofing materials.
Asphalt shingles have long been the most popular roofing material for florida homes but metal roofs are becoming an increasingly popular option and for good reason.
Apply a 19 inch 483 mm strip of underlayment felt parallel to and starting at the eaves fastened sufficiently to hold.
Our metal roofing profiles.
The first way is to run new underlayment over the existing shingle roof completely covering the old roof.
The first is running new underlayment over an existing shingle roof thus covering the old roof.
Code interpretation metal roof panels are defined as interlocking metal sheets that have a minimum installed weather exposure of 3 square feet.
The main benefit of doing it this way is that it is the fastest way to install a new metal roof over a shingle roof.
Architectural metal panels and structural metal panels.
Of course this isn t par the course for most counties and many will allow you to apply a metal roof over the top of a shingle roof.
There are two classifications of metal roof panels.
Starting at the eave apply 36 inchwide 914 mm sheets of underlayment overlapping successive sheets 19 inches 483 mm end laps shall be 6 inches and shall be offset by 6 feet.
Section 1507 4 metal roof panels the installation of metal roof panels shall comply with the provisions of this section.
State regulations and the condition of your roof both play a role in determining if you need a roof replacement tear off vs cover over.
