Metal Roof Furring Strip Spacing

Correctly measure the spacing of furring strips for a metal roof to further decrease condensation.

Metal roof furring strip spacing.

This should then be followed up with galvanized steel hat channel preferred method or 1 x 2 furring strips. If you re unfamiliar with what a furring strip is it s best described as a long slender strip that s constructed from either wood or metal. Screw fasten the purlins using fasteners directly screwed into the trusses or rafters. 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.

Peter the choice as to whether to use 1x or 2x for furring is probably best decided by how deep a ventilation cavity you need. Do i need to do this. If there are gaps around the roof penetration or valley points cut extra sections of furring to fit. I built a 12 x20 flat roof shed for storage.

Place it two feet apart from the first row. If you opt to put the metal roof atop current roof shingles it needs to be done in combination with a synthetic underlayment recommended. Metal furring strips come in two different styles. Metal roofing is 38 wide however the panels need to overlap and therefore the actual coverage of the classic panel is 36.

I put 2 x4 furring strips on the rafters to hold down cost. So if your rafter length is 16 10 it can be cut. The machinery will not cut panels shorter than 3. Someone told me that i had to put felt paper on the furring strips to hold down condensation and that it was also required.

The final step is securing a secondary row of furring strips along the roof. Something is wrong if the lumberyard s 5 8 plywood is cupping. However you can cut the panels with tin snips if you need pieces shorter than 3. Twenty four inches is a common spacing of furring strips for a metal roof.

Both have stronger holding for fasteners than the sips sheathing.