Framing A Metal Roof

Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

Framing a metal roof.

A metal roof must also allow for some overlap on each side of the panels which will reduce the effective width of the panel. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Metal roofing is a good choice for snowy climates. Move it when needed to stay in the shade.

A 2 nominal lumber thickness provides the maximum pullout values for both screws and nails when the fasteners penetrate a minimum of 1 into the wood. 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. Remove any nails sticking out and reposition any metal gutters so that water flows properly off the roof. It s more watertight than shingles distributes snow load better metal lasts longer and it often sheds snow faster so ice snow guards might be needed.

The run or half the building span is the base of the triangle. The substructure to which the metal panels are fastened must be properly spaced and sufficiently thick to provide a roof or wall system able to meet required design loads. Next use these calculations to determine how many rafters you ll need for your roof and cut them to size. And the line length measurement from the roof peak to the building wall is the hypotenuse.

Shed roof framing with common rafters. First focus on removing the oldest shingles that are sticking out as well as any flashing or vents. Enjoy your outdoor space by building this gazebo. I cut rafters out of 2x8s frame this pole barn lean to.

To frame a roof start by choosing a roof style like a frame or gabled. Darker colors attract solar gain and heat so helps shed snow more quickly. Then gather your measurements by calculating the run rise and length of each rafter segment in feet and the pitch of your roof in inches. To determine how far apart to set rafters measure the width of the metal panel and then the width of the first hill and valley of the panel.

The rise or height of the roof at its peak is the altitude of the triangle. Buy it now at kohl s. Then remove the rest of the roof including all the shingles. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof line.