The average cost for a patio roof addition using low maintenance wood patterned aluminum runs for about 6 000 to 10 000 for an area of 20 by 20 feet as of 2011.
Frame roof addition.
The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.
And the line length measurement from the roof peak to the building wall is the hypotenuse.
This is the simplest solution a single slope that s attached to the original house at the high point and slants down to the outer wall of the addition.
At the low end of the valley the subfascias of the two roofs are mitered with a block filling in the roof framing.
The run or half the building span is the base of the triangle.
The gable roof on the porch addition was framed with a dropped structural ridge supporting the common rafters above.
This is a popular alteration to the standard gable roof providing more headroom and space for an extension without having to completely alter the existing roof.
Sheathing blocking is added along the valley and the sheathing pieced in for both roof planes.
A screen can be added for an additional cost of 3 000 to 4 000.
It s easy for the contractor to build and easy on the homeowner s budget says schultz but it makes the new space look like an obvious add on.
How to tie a additions roof to existing roof roof additions to existing roofs how to construct a roof from an exsisting shead how to change a roof line how to attach a deck roof to existing roof how to add a roof over porch attache porch roof on house attach shed roof to house adding a roof to screened in porch adding a roof to existing.
While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below.
Gable roof with shed addition.
Adding a wood lattice roof can range between 500 and 10 000.
The average wooden stud wall frame construction for an addition runs between 9 and 18 a square foot or 1 800 and 3 600 for a 200 square foot addition with most homeowners spending around 2 500 on basic rough construction framing.
Framing a roof is the last step in framing new construction.