How Do You Frame For A Metal Roof

When a metal roofing sheet must be installed on a curved roof screws should be installed at every overlapping rib at the sheet ends to resist the natural tendency of the metal to spring back.

How do you frame for a metal roof.

Spacing of furring strips for metal roof when installing a metal roof over an existing roof insulate the spaces between the wood strips with rigid insulation to prevent condensation before. Space the screws about 12 in 30 cm apart down the entire piece of metal. The framing style of the roof refers to the actual components of each roofing truss and the design of the structural foundation of that roof. Lay the first purlin at the ridge of the roof down to the chalk line beginning at either corner.

Partially these will depend on the style of roof you ve selected but you ll also have some wiggle room depending on the design elements of the house. When you are done you will see the bare bones of the roof frame and plywood sheathing i e. The decking of a roof is typically a plywood layer that is fastened directly onto the rafters. The old wood that was under the shingles.

If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch. Metal should not be re bent once it has been formed nor should it be folded back on itself. Snap a chalk line horizontally across the roof two feet down from the top. Take your first sheet of metal and place it on the roof so that it overhangs the edge at least 3 4 in 1 9 cm.

How to building frame a roof by steel frame amazing smart techniques practical implementation. Insert two equally spaced nails into the rafter. Use your neoprene washer head screws to secure the metal to the sheathing. Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.

Take care the first piece is aligned precisely perpendicular square to the edge. Fasten the purlin with 16d common nails into each vertical rafter. Then remove the rest of the roof including all the shingles.