How To Extend Roof Rafters

If the existing rafters have bird s mouth cuts where they sit on the exterior wall plate use.

How to extend roof rafters.

1 or 2 ft. Lay 10 or 12 inch tiles with 1 inch head lap on the sides of dormers. Then this is not an extension to the rafter but a separate rafter. To get a visual idea of what the new overhang will look like take a photo of the house from.

How to increase rafters for insulation step 1. How to extend rafters determining rafter length. They extend diagonally so that one end or both of a rectangular shed roof is slanted perpendicularly to the gable roof in the midsection of the shed. Use cleats the same length as the width of the.

Strip off the first 3 layers or more of shingles going up the roof the length of the work area. Lay all tiles within 1 foot of hips ridges and abutting vertical surfaces in roofer s cement. At the beam end the rafters are fastened with a 10 inch structural screw through the top of the rafter into the beam. Attach 1 2 inch wood cleats to both sides of the existing rafter.

If you re using a 2x4 it ll measure 1 5 inches 3 8 cm. For instance if the roof has 2 by 6 rafters and. The blocking is held low to hide the roof wall intersection and to provide a 1 inch air space at the top for a ventilation channel. Follow safe working procedure falling.

Double the tiles at eaves and project them 1 inch over the rear edge of gutters. You could simply support it on the existing wall and install it without a splice. Remove the drip edge and the facia trim. You need to get up to the area that you are going to extend.

If you are. The roof deck is 1x6 attached to the top of the rafters with 1 4 inch space between boards. If the main rafter is only sticking out a short distance i e. Measure the width of the ridge beam.

Set up scaffolding. The ridge beam is the vertical piece of plywood which will form the peak of the gable and to which you ll fasten the rafters on either sides. Secure each tile with two large head roofing nails. The two rafters would not have to line up but that would be simpler for installation.