How To Safley Sheet A Gambrell Roof

Gambrel roof framing geometry calculator inch this gambrel roof fits in a semicircle and starts as the top half of an equal sided octagon.

How to safley sheet a gambrell roof.

Slide the sheet one rafter width over the end of the roof so the edge is centered on the next rafter offset one rafter spacing from the first piece of installed sheathing from the row below. To build a gambrel roof you ll need wooden boards a saw and a sheet of plywood. To secure the shingle and all remaining shingles you need to use the nail gun to insert three evenly spaced nails through the uppermost portion of the shingle. Use a sturdy extension ladder that extends at least 3 feet above the eaves to climb onto the roof and secure the bottom to the foundation and the top to the eaves or fascia so it doesn t move.

Cover the roofing sheets with tar paper. Install the first sheet with one long edge parallel and flush with the gambrel end and the short end flush with the bottom edge of the decking. Start at one lower corner along the gambrel end. The last course at the top may need to be rip cut if the roof is not in 4 foot increments.

You will need to begin laying your shingles at an outer most corner of the lowest slope of the roof. Gambrel installation subscribe to our page for more metal roofing videos. Besides its unique appearance a gambrel roof also serves to maximize the usable floor space in the attic area. A gambrel or barn style roof is simply a gable roof with a change in slope partway up the roof.

Here at 1st coast metal roofing supply we value our customer service and product q. Check overhang to calculate rafter overhang equal to the lower level cut at the full rafter depth. In addition fit a 12 strip over the top ridge. Once you have your supplies the first thing you ll need to do is cut the rafters to the right size.

It is important here that the sheathing at the eave line be exactly perpendicular to the rafters so that the sheets will meet at the centers of the rafters. With overhang selected drag slider to increment decrement birdsmouth seat width to suit. Install the next piece side by side overlapping it according to the manufacturer s recommended distance along the long edge. Move slider or directly enter angle to alter sweep angle of lower rafters and change the shape.

Begin applying the sheets from the bottom of the roof the eaves and work your way up to the ridge. Align the first shingle squarely with the roof and lay it into place. After the rafters are cut you can assemble them on the piece of plywood and get someone to help you to lift them into position on the top of your shed or barn.