That s a simple low cost solution that can tie in well with the main house.
Joining extension roof to existing.
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.
In the case of a flat roof extension the height of the highest point of the roof must not exceed the parapet or eaves 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.
How to join a lean to roof to an existing roof.
Simon maxwell in order to create the required head height for the staircase but also keep the existing window a unique twisted roof was the answer.
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.
In ni you are allowed to extend your house by up to 70mcu or 15 of the original house volume whichever is the greater if it is detached or semi detached.
While it looks like an impressive architectural gesture it is also an effective and practical solution to the problem.