No Furring Strips Under The Tile Roof

I mention this because some metal roofing shingles requires a horizontal purlin for attachment purposes.

No furring strips under the tile roof.

Furring strips are 4 wide boards that are spaced apart several inches to hold up cedar shakes while allowing them to breathe. Find roof panel closure strips at lowe s today. When finished there should be a row of furring strips stretching from one end to another with the top edge aligned at the peak. But roofers can install a vented metal roof that eliminates this potential problem.

The final step is securing a secondary row of furring strips along the roof. It is grooved so that it can be installed horizontally. 1 you said some metal roofing should never have firring strips i have certainly seen that with some of the very thin steel or weak aluminum decking which could never stand even a foot of free span over firring strips without crumpling buckling under someone walking on it so they would have to lie flat on the water barrier over the sheathing. If trapped between the metal roofing and old roofing moisture can build up and cause mold and rot.

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. There is a new synthetic material on the market that is used for furring strips under a roof. This does not work well with asphalt shingles because asphalt shingles are designed to go into plywood which has no gaps. For many applications a layer of plywood underneath your metal roofing is an unnecessary expense.

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. Place it two feet apart from the first row. They re installed before the tile is laid on the roof and may serve more than one purpose.