How To Extend Roof Rafters

The roof deck is 1x6 attached to the top of the rafters with 1 4 inch space between boards.

How to extend roof rafters.

For instance if the roof has 2 by 6 rafters and. Double the tiles at eaves and project them 1 inch over the rear edge of gutters. Then this is not an extension to the rafter but a separate rafter. The two rafters would not have to line up but that would be simpler for installation.

If you re using a 2x4 it ll measure 1 5 inches 3 8 cm. 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. Strip off the first 3 layers or more of shingles going up the roof the length of the work area. If the main rafter is only sticking out a short distance i e.

How to increase rafters for insulation step 1. Figure the rafter depth needed to provide the desired r value. Subtract the width of your ridge beam. You need to get up to the area that you are going to extend.

If you are. Attach 1 2 inch wood cleats to both sides of the existing rafter. Remove the drip edge and the facia trim. 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.

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. Lay all tiles within 1 foot of hips ridges and abutting vertical surfaces in roofer s cement. These rafters require extra measurement to mesh the hip gable to the ridge beam properly.

Set up scaffolding. At the beam end the rafters are fastened with a 10 inch structural screw through the top of the rafter into the beam. Measure the width of the ridge beam. You could simply support it on the existing wall and install it without a splice.

Follow safe working procedure falling. Lay 10 or 12 inch tiles with 1 inch head lap on the sides of dormers. To get a visual idea of what the new overhang will look like take a photo of the house from. Secure each tile with two large head roofing nails.