Why Put Furring Strips Under Metal Roofing

Create a chalk map.

Why put furring strips under metal roofing. Allowable gap between firring strips relates to the ability of the roofing material to resist buckling or crumpling under snow wind or walking. Metal roofing is resistant to fire rot and termites. Installing furring strips for metal roofing. The roofing is manufactured in panels that.

Begin with the roof valleys. Tin roofing also known as metal roofing is considered more durable than composition or wood shingles. Installing wood stripping under a tin roof. 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.

Use furring strips to build a slat board on the roof then mount the steel sheets to the slat board. Do you have the same question. This should then be followed up with galvanized steel hat channel preferred method or 1 x 2 furring strips. 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.

Manufacturers provide 30 year warranties on metal roofing products. This is by far the most common way to install a metal roof. Don t forget to remove any sections of the. When putting on a metal roof how far apart do you space the furring strips.

But roofers can install a vented metal roof that eliminates this potential problem. For many applications a layer of plywood underneath your metal roofing is an unnecessary expense. If trapped between the metal roofing and old roofing moisture can build up and cause mold and rot. Installing steel roofing over existing roofing materials is fairly simple.

3 install 1 4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1 4 purlins over the shingle roof. Screw fasten the purlins using fasteners directly screwed into the trusses or rafters. If you opt to put the metal roof atop current roof shingles it needs to be done in combination with a synthetic underlayment recommended. You can use these marks as a guide for where to place the inner edges of the wood nailers.

Make chalk marks along the side of the valley about an inch fro the valley at each side but parallel to it.