Spacing Of Furring Strips For Metal Roof

Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.

Spacing of furring strips for metal roof.

Rafter spacing is based on the width of the metal roofing panels. 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. If there are gaps around the roof penetration or valley points cut extra sections of furring to fit. Place corner pieces where panels will meet bends at the edge of the roofing.

But roofers can install a vented metal roof that eliminates this potential problem. Correctly measure the spacing of furring strips for a metal roof to further decrease condensation. Metal furring strips come in two different styles. Add additional furring strips the final step is securing a secondary row of furring strips along the roof.

Always place fasteners in the flat of the metal roofing. The thought process is the washer is flat this metal area is flat therefore it provides the best seal in the flat. Twenty four inches is a common spacing of furring strips for a metal roof. Place it two feet apart from the first row.

In most cases furring strips are 1 x 2 or 1 x 3 in size and can be applied both horizontally or vertically. We recommend installing furring strip 1x4 s down then applying single bubble wrap overtop of the strips and finally installing the metal roof. 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. Make sure to consult local building codes before having a metal roof installed directly over old shingles.

Wider panels allow for greater spacing between rafters. Some manufacturers want to see firring strips commonly 1x3 or 1x4 running up and down the roof supporting the center of the flat part of the panels not uslaly called for under the ribs because you are not supposed to step there i have seen 1x2 or 1x3 s called out for at the third points of the flat part the web on wider panel roofing.