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.

How to extend roof rafters.

Secure each tile with two large head roofing nails. Attach 1 2 inch wood cleats to both sides of the existing rafter. 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. Measure the width of the ridge beam.

Lay all tiles within 1 foot of hips ridges and abutting vertical surfaces in roofer s cement. Lay 10 or 12 inch tiles with 1 inch head lap on the sides of dormers. If you are. 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.

The two rafters would not have to line up but that would be simpler for installation. Follow safe working procedure falling. You need to get up to the area that you are going to extend. Strip off the first 3 layers or more of shingles going up the roof the length of the work area.

These rafters require extra measurement to mesh the hip gable to the ridge beam properly. The roof deck is 1x6 attached to the top of the rafters with 1 4 inch space between boards. If the existing rafters have bird s mouth cuts where they sit on the exterior wall plate use. If you re using a 2x4 it ll measure 1 5 inches 3 8 cm.

Figure the rafter depth needed to provide the desired r value. You could simply support it on the existing wall and install it without a splice. How to extend rafters determining rafter length. To get a visual idea of what the new overhang will look like take a photo of the house from.

Subtract the width of your ridge beam. Use cleats the same length as the width of the. 1 or 2 ft. Set up scaffolding.

Remove the drip edge and the facia trim. How to increase rafters for insulation step 1. At the beam end the rafters are fastened with a 10 inch structural screw through the top of the rafter into the beam. Double the tiles at eaves and project them 1 inch over the rear edge of gutters.