Metal Roof Furring Strip 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.

Metal roof furring strip spacing.

Place it two feet apart from the first row. If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch. The furring strips are 1x4 pine boards. Correctly measure the spacing of furring strips for a metal roof to further decrease condensation.

If you opt to put the metal roof atop current roof shingles it needs to be done in combination with a synthetic underlayment recommended. When finished there should be a row of furring strips stretching from one end to another with the top edge aligned at the peak. Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging. Secure them to the roof with wood screws at every 4 to 6 inches.

Bend the metal edging to your needs if necessary and fasten it to the roof with nails at every 4 to 6 inches. Step 5 install metal sheets. Of course with metal shingles as opposed to panel roofing the mounting or engagement strip if used or shingles if no mounting strip should lie flat on the water barrier or bridge across up and down slope firring strips at the manufacturer specified spacing. This should then be followed up with galvanized steel hat channel preferred method or 1 x 2 furring strips.

Step 4 install edging. Screw fasten the purlins using fasteners directly screwed into the trusses or rafters. Place corner pieces where panels will meet bends at the edge of the roofing. If there are gaps around the roof penetration or valley points cut extra sections of furring to fit.