Extending The Exsisting Roof

That s a simple low cost solution that can tie in well with the main house.

Extending the exsisting roof.

You may need a structural engineer to help with design of trusses and rafters. With the roof pitch the same it doesn t matter if the new addition is slightly off in height or lined up front to back because you re going over or under the old roof. How to join a lean to roof to an existing roof. This method may be one of the most ubiquitous ways of attaching a patio roof.

Mark the proper height on the existing roof and snap a chalk line across the width of the area for the new shed roof. Measure with a tape measure and cut with a circular saw a 2 by 6. A good estimate for a contractor to do this same roof overhang extension would range from 50 to 85 per running foot. This cost did not include any labor or waste disposal fees.

To do this we had to extend the plane of the shed roof out over the porch roof creating a small triangular extension of the existing roof. If you re adding to the gable end of the house the side wall that goes up to the roof s peak it s fairly easy to extend the existing roofline over the new space says curt schultz a realtor architect builder in pasadena calif. A lean to roof also called a shed roof slopes in one direction with rafters that rest against another structure at their high end and overhang. But it is important that the roof pitch is exactly the same as the existing roof because you will see it from one roof to the other if it isn t.

Leave the wood roof decking in place but mark locations of all rafters or joists to which it is fastened. Here are 7 different ways of attaching a patio roof to an existing house that you can apply. To do this method you will have the back channel and fascia strengthened by reinforcing two. At the low end of the valley the subfascias of the two roofs are mitered with a block filling in the roof framing.

You will need building help and a large construction dumpster for debris. Remove all shingles and roofing paper from that section. Tying a gable roof into an existing roof is a long expensive project usually undertaken only when there is a major addition or renovation to a house. Fix the back channel to the fascia boards underneath the gutter directly.