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. Begin with the roof valleys. You can use these marks as a guide for where to place the inner edges of the wood nailers. Installing steel roofing over existing roofing materials is fairly simple.

Manufacturers provide 30 year warranties on metal roofing products. The roofing is manufactured in panels that. If you opt to put the metal roof atop current roof shingles it needs to be done in combination with a synthetic underlayment recommended. Create a chalk map.

This is by far the most common way to install a metal roof. This should then be followed up with galvanized steel hat channel preferred method or 1 x 2 furring strips. Do you have the same question. 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.

Allowable gap between firring strips relates to the ability of the roofing material to resist buckling or crumpling under snow wind or walking. Installing wood stripping under a tin roof. 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. Tin roofing also known as metal roofing is considered more durable than composition or wood shingles.

Make chalk marks along the side of the valley about an inch fro the valley at each side but parallel to it. Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board. If trapped between the metal roofing and old roofing moisture can build up and cause mold and rot. Metal roofing is resistant to fire rot and termites.

As long as the plywood under the shingle roof is in good condition this way can provide many benefits. When putting on a metal roof how far apart do you space the furring strips. Screw fasten the purlins using fasteners directly screwed into the trusses or rafters. Installing furring strips for metal roofing.

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.