How Far Should Roof Sheathing Overhang Rafter Tails
The assembly of rafter tails and tongue and groove boards that create the appearance of sheathing from below can be built on the ground and installed as one piece or in sections.
How far should roof sheathing overhang rafter tails. It is at 45 3 4 in. Slide the framing square until the 6 in 15 cm mark intersects the line you ve marked for the birdsmouth cut. If for example you want the rafter to overhang the edge of your building by 6 inches 15 cm measure this now.
This indicates the upper edge of the first row of roof sheathing leaving enough overhang that the subfascia and fascia will tuck neatly underneath when the time comes. That said overhangs can extend as far as 2 without the need for external supports. 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.
Starting with how to place the first row of sheathing we cover fastening methods the use of h clips stagg. Measure up the rafter 45 3 4 inch from the cut end of the truss tail and snap a line along the trusses. In this detail wood struts extend from the top of the assembly into the roof where they are sistered to the roof rafters to support the overhang.
However the suggested width of an overhang is between 12 and 18 for eaves and no more than 8 for rakes. Measure the rafter overhang. We go in depth on how to install roof sheathing.
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