How To Roof A Shed Dormer

With the dormer roof raised and supported we cut away the part of the original roof that was still in place leaving the exposed ends of the floor joists.

How to roof a shed dormer. Mark the dormer wall layout on the attic floor and make sure the dormer walls are square with the exterior wall of the house. Average cost and size. Use a plumb bob to transfer the inside edge of the walls to the underside of the roof. The dormer s roof slope should be at least 4 in 12.

Purchase your materials including wood windows and any other specialty. If yours does your roofer should install ice and water protector along the junction between the roof and dormer and then install shingles as normal. To correct a slight dip in the floor we established a benchmark height with a laser level and nailed 2x6 squash blocks to the sides of the existing floor joists. Recessed dormer set into the roof a recessed dormer i like to call it a sugar scoop maximizes the height of the dormer face while minimizing the projection of the dormer roof above the main roof plane.

After determining the size of shed dormers you would like remove the shingles and use a measuring tape to draw the layout of the dormer on the roof with chalk. Flush dormers tend to look boxy and flatter roof pitches make them appear even boxier. Instead a shed dormer may join at the roof ridge in which case roofers can install the ridge as normal. This is type of flat roof or shed roof dormer.

Its front wall doesn t blend into the roof as with most flat shed dormers but is an. Or the shed dormer may meet the roof face before the ridge. 75 120 per square foot or 16 800 to 26 880. 23 300 for dormer 16 wide x 14 deep.

Dormers that intersect the roof below the ridge can be framed in a couple of ways but the most common method begins with a header inserted between doubled common rafters on the sides of the dormer at the point where the dormer roof meets the existing roof. Wall roof dormer construction. Using this outline as a guide use a drill to create a pilot hole at each of the 4 corners that you have marked being certain to drill straight down through the ceiling. Create a layout that incorporates the details of the project such as slope headroom and exterior appearance.

Drive nails up through the roof at the corners.