How To Cut In Gable Roof To Existing Roof

Next cut out slots in rafters so a 2 x 4 will sit flush with it on the cap plate.

How to cut in gable roof to existing roof.

In the case of a lean to roof over an addition the existing rafters will have to be cut away to accommodate the addition and the shed roof will require support where. The easiest way to tie in the new shingles with the old is with a cut valley see four ways to shingle a valley. Make a seat cut on the end of your rafter so it lays flat on your top plate. Now comes the really really big point.

We cut the rafters to length on the porch. Measure as precisely as possible down to the 1 4 inch 0 64 cm 1 8 inch 0 32 cm or 1 16 inch 0 16 cm. Then install new ridge board tying it to the old roof by cutting back part of the original ridge board so there is overlap. Continue to measure 2 x 4 s to allow nailing at each truss until you reach the end of your roof and add the additional 6 inches and 1 1 2 inches for that end.

Then add siding and trim to the new gable roof end. Before you start cutting you first need to determine how long your roof rafters need to be and the angles at which you ll cut the top and bottom of the rafter. Install metal drip edge at the eaves. Gable end detail overhang cut and then rebuilt to hide the thickness of the over roofing rigid insulation.

Use a tape measure to measure the entire width of your building. Once new trusses are secured sheath the roof with oriented strand board osb lay down roofing paper then nail on shingles. Finally cut slots in the underside of each rafter flush against the wall with a saws all. Roofs are basically five types.

The roofing cement will resist possible leaks overnight. At the low end of the valley the subfascias of the two roofs are mitered with a block filling in the roof framing. Line up your framing square again to make a triangle with the mark. Another common design in the northeast is the saltbox which is a gable roof with one longer side.

The 6 inches of rigid insulation added to the top of the existing roof deck needed to be done in a manner that was invisible. These days cut ups or roofs with a lot of valleys dormers and other features are increasingly popular. Up from the valley center and cut through the shingles and underlayment. Measure about 7 8 inch 22 mm from the end of your rafter using your framing square.

After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in. Attaching below the ridge. The gable roof on the porch addition was framed with a dropped structural ridge supporting the common rafters above.