Extending Existing Gable Roof

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.

Extending existing gable roof.

You may need a structural engineer to help with design of trusses and rafters. This may require removal of a second rafter. 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. Attaching near the eaves.

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. How to extend gable end roof overhang. Then load bearing roof beams fixed to the trusses are extended in the same way. It is not a job for beginners.

In the past i ve built ladders out of the same size rafter material and lagged screwed them into the gable rafter and then cut the sheathing back and re lay it after the extensions were added. Add gable extension on existing roof we are re siding and re roofing so i thought now would be a good time to add them. For the arrangement of the gable end overhang for the standard roof you lengthen the ridge beam beyond the facade for previously verified length using cut rafters. In any case the structure that the shed roof is leaning on is an existing roof typically a gable roof with a ridge and a steeper slope than that of the shed roof.

For pitched roofs outriggers can be supported on the top of the gable wall end framing and extend back to the next truss or to a rafter. Extending a gable roof can be tricky since it involves working on the roof but you may be able to do it yourself if you only need to add 1 2 2 inches 1 3 5 1 cm. That s a simple low cost solution that can tie in well with the main house. 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.