How To Extend Roof Rafters

To get a visual idea of what the new overhang will look like take a photo of the house from.

How to extend roof rafters.

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. Figure the rafter depth needed to provide the desired r value. Subtract the width of your ridge beam. 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.

Attach 1 2 inch wood cleats to both sides of the existing rafter. How to increase rafters for insulation step 1. Secure each tile with two large head roofing nails. Set up scaffolding.

Double the tiles at eaves and project them 1 inch over the rear edge of gutters. 1 or 2 ft. How to extend rafters determining rafter length. Remove the drip edge and the facia trim.

At the beam end the rafters are fastened with a 10 inch structural screw through the top of the rafter into the beam. If you re using a 2x4 it ll measure 1 5 inches 3 8 cm. If the main rafter is only sticking out a short distance i e. You could simply support it on the existing wall and install it without a splice.

Then this is not an extension to the rafter but a separate rafter. Lay 10 or 12 inch tiles with 1 inch head lap on the sides of dormers. For instance if the roof has 2 by 6 rafters and. These rafters require extra measurement to mesh the hip gable to the ridge beam properly.

Strip off the first 3 layers or more of shingles going up the roof the length of the work area. Follow safe working procedure falling. Use cleats the same length as the width of the. If the existing rafters have bird s mouth cuts where they sit on the exterior wall plate use.

If you are. Lay all tiles within 1 foot of hips ridges and abutting vertical surfaces in roofer s cement. 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. Measure the width of the ridge beam.