Framing A Metal Roof

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.

Framing a metal roof.

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. The run or half the building span is the base of the triangle. First focus on removing the oldest shingles that are sticking out as well as any flashing or vents. Darker colors attract solar gain and heat so helps shed snow more quickly.

Next use these calculations to determine how many rafters you ll need for your roof and cut them to size. Buy it now at kohl s. Then remove the rest of the roof including all the shingles. Move it when needed to stay in the shade.

If you ve wondered how to frame a lean to roof off a pole barn this video will show you how i did it. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. 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. Metal roofing is a good choice for snowy climates.

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. And the line length measurement from the roof peak to the building wall is the hypotenuse. Remove any nails sticking out and reposition any metal gutters so that water flows properly off the roof. The rise or height of the roof at its peak is the altitude of the triangle.

Be sure the larger edge is laid so that the small edge of the next panel will overlap it. For those looking for a metal deck roof that is collapsible this gazebo features a metal frame for sturdiness yet is easy to set up and take down. 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. 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.

To frame a roof start by choosing a roof style like a frame or gabled. Install the roofing screws vertically along each rib in the panel. 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. I cut rafters out of 2x8s frame this pole barn lean to.