Installing steel roofing over existing roofing materials is fairly simple.
Furring strips on roof spacing.
Edit answer for another 41 minute you need to check the installation instructions from the manufacturer depending on whether the purlins firring strips are 1x or 2x material and how wide thickness metal gage of roofing steel or aluminum type of seams design wind and snow loading whether designed to be walked on or not etc i have seen it vary from as little as 4 inches clear gap between firring strips on lightweight aluminum to as much as 4 feet on very heavy gage steel.
Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board.
Place it two feet apart from the first row.
Correctly measure the spacing of furring strips for a metal roof to further decrease condensation.
Create a level surface for attaching wallboard and paneling.
The final step is securing a secondary row of furring strips along the roof.
These furring strips got their name due to the fact that they re shaped like a hat.
Some consideration for vent stacks and chimneys is required during the design process.
If there are gaps around the roof penetration or valley points cut extra sections of furring to fit.
Always place fasteners in the flat of the metal roofing.
Hat channel furring strips are the most common kind of metal furring strips and are mainly used in the real estate industry due to its heat resistance qualities.
When finished there should be a row of furring strips stretching from one end to another with the top edge aligned at the peak.
In most cases furring strips are 1 x 2 or 1 x 3 in size and can be applied both horizontally or vertically.
When re roofing a shingle roof with metal do not install the metal roofing directly on a shingle roof.
Metal furring strips come in two different styles.
Manufacturers provide 30 year warranties on metal roofing products.
Twenty four inches is a common spacing of furring strips for a metal roof.
We recommend installing furring strip 1x4 s down then applying single bubble wrap overtop of the strips and finally installing the metal roof.
Furring strip board is perfect for a wide range of uses including carpentry hobbies shelving and general finish work.