If you hire a contractor they can explain all of this to you.
Furring strip metal roof.
Make sure to consult local building codes before having a metal roof installed directly over old shingles.
To make clear to readers if firring strips battens are used this should be located under the firring strips so the ventilation airspace is right under the metal where condensation is most likely to occur and to keep any roof boot flashing leakage running off over the top of the water barrier from contacting and corroding the underside of the roofing metal like it would if the water barrier were directly under the roofing though that is the case with roofing direct on sheathing without.
Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board.
Gibraltar building products 3 ft.
Corrugated roofing suntuf closure strip metal roofing polyethylene closure strips rolled furring strip galvalume gutter.
If talking strip metal roofing like standing or raised seam then i can t imaging getting an even final surface or proper fastening without firring strips not only because putting the metal right on the shingles gives no way to level out the uneveness of the old shingles but also the underlying shingloes and underlayment will get awful hot.
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Some jurisdictions may require full tear off whenever a new roof is installed.
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Metal roofs depend on thin strips of wood known as furring to allow air to circulate and prevent rot.
Or installing the new metal roofing over furring strips 1 x 3s or similar will raise the metal and provide a ventilating air pocket between layers.
For those that are going it alone it is a good idea to get in contact with a roofing expert first.
Spacing of furring strips for metal roof when installing a metal roof over an existing roof insulate the spaces between the wood strips with rigid insulation to prevent condensation before.
Outside closure strip for shelterguard metal roofing panels 4 bag model 6999231000.
Installing steel roofing over existing roofing materials is fairly simple.
Metal roofing is resistant to fire rot and termites.
Inside closure strip foam sm rib roof accessory in black 4 pack model 98190.
Furring strips are required if you plan to place a metal roof on top of existing shingles.
Sartigan 5 4 in x 3 in x 8 ft spruce pine fir furring strip.