Frame Shed Roof Dormer

Framing a shed dormer is a simpler process than building a gable dormer.

Frame shed roof dormer.

The shed roof rafters are fastened to the other side of the header. From the floor to the peak and set back from the front wall of the house about 2 ft. They re easy to build are simple to finish and. The gable dormers we built are 6 ft.

Usually a dormer is made for extra light into a house. You can still add a purely decorative make believe dormer to a truss framed roof but not a real dormer. Shed dormer design needs to consider three crucial components. However the width can be increased with properly sized and engineered support framing.

Spier says that the best shed dormers are practical and pleasing to the eye. It depends on the type of your roof frame. 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. Dormers in this style are characteristic of dutch colonial craftsman and colonial revival houses.

A stick framed roof with an attic has room for adding a dormer while a truss framed roof doesn t have any attic space to add a dormer to. Each dormer adds about 30 sq. Framing a dormer with shed roof is a difficult process but if you take your steps correctly you will be able to handle the job effectively. Framing the 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.

The end wall of a shed dormer carries the load rather than the sidewalls. Wide about 9 ft. After the walls ridge and common rafters are set i overlay the valley framing on top of the main roof sheathing to save from cutting a true valley. Be extremely careful not to damage the existing structure.

A shed dormer visible behind the peaked roof on the house shown here has a roof that slopes in only one direction toward the front. Wide depending on the size and length of the existing rafters. Cut the shed dormers opening with a reciprocating saw. On the roof using the pilot holes drilled in step 1 snap the lines that will denote the opening in the roof for the dormer.

This framing option is usually best for dormers up to 6 ft. If you feel that your house has little natural light you could think about creating a dormer with shed roof which will certainly help. Of all the ways to bump out a roof i think shed dormers offer the most bang for the buck. If you re a little unsure of your rough framing or roofing skills hire a carpenter to help with this phase of the roof dormer project.

Roof pitch overhangs and header heights and windows and trim. Whether you re expanding a cramped attic into a bedroom office or playroom if you have any carpentry experience you can accomplish this home renovation goal yourself.