Why Put Furring Strips Under Metal Roofing

When putting on a metal roof how far apart do you space the furring strips.

Why put furring strips under metal roofing. For many applications a layer of plywood underneath your metal roofing is an unnecessary expense. Create a chalk map. Installing wood stripping under a tin 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.

Metal roofing panels rated for architectural use attached to purlins horizontal pieces of wood or metal fastened to roofing trusses are structurally sound when installed according to your roofing manufacturer s instructions and local building codes. Make chalk marks along the side of the valley about an inch fro the valley at each side but parallel to it. Tin roofing also known as metal roofing is considered more durable than composition or wood shingles. When putting on a metal roof how far apart do you space the furring strips.

Manufacturers provide 30 year warranties on metal roofing products. You can use these marks as a guide for where to place the inner edges of the wood nailers. Metal roofing is resistant to fire rot and termites. There are two ways to do this put in firring nailing though nails are not used any more for this strips or purlins in steel frame construction on the roof to support it or place the metal roofing directly on a flat surface like foam insulation board or the roof sheathing with roof water barrier in the correct position in the layer.

Screw fasten the purlins using fasteners directly screwed into the trusses or rafters. Begin with the roof valleys. If trapped between the metal roofing and old roofing moisture can build up and cause mold and rot. This is by far the most common way to install a metal roof.

Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board. As long as the plywood under the shingle roof is in good condition this way can provide many benefits. But roofers can install a vented metal roof that eliminates this potential problem. Do you have the same question.

Don t forget to remove any sections of the. If you opt to put the metal roof atop current roof shingles it needs to be done in combination with a synthetic underlayment recommended. This should then be followed up with galvanized steel hat channel preferred method or 1 x 2 furring strips. Installing steel roofing over existing roofing materials is fairly simple.

Allowable gap between firring strips relates to the ability of the roofing material to resist buckling or crumpling under snow wind or walking.