How To Extend Roof Rafters

Subtract the width of your ridge beam.

How to extend roof rafters.

At the beam end the rafters are fastened with a 10 inch structural screw through the top of the rafter into the beam. 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 rafters determining rafter length. Remove the drip edge and the facia trim.

Set up scaffolding. If the existing rafters have bird s mouth cuts where they sit on the exterior wall plate use. Double the tiles at eaves and project them 1 inch over the rear edge of gutters. If you are.

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. 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. You could simply support it on the existing wall and install it without a splice.

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. Lay 10 or 12 inch tiles with 1 inch head lap on the sides of dormers. Attach 1 2 inch wood cleats to both sides of the existing rafter. These rafters require extra measurement to mesh the hip gable to the ridge beam properly.

Figure the rafter depth needed to provide the desired r value. For instance if the roof has 2 by 6 rafters and. Secure each tile with two large head roofing nails. If the main rafter is only sticking out a short distance i e.

Strip off the first 3 layers or more of shingles going up the roof the length of the work area. Measure the width of the ridge beam. The roof deck is 1x6 attached to the top of the rafters with 1 4 inch space between boards. Then this is not an extension to the rafter but a separate rafter.

Follow safe working procedure falling. Lay all tiles within 1 foot of hips ridges and abutting vertical surfaces in roofer s cement. You need to get up to the area that you are going to extend. Use cleats the same length as the width of the.