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.
Joining extension roof to existing.
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.
Unique twisted roof on extension to grade ii listed cottage image credit.
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.
The bottom of our blind valley was about 30 inches short of the bottom of the porch roof so we extended the line of the valley down to the edge of the new 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.
While it looks like an impressive architectural gesture it is also an effective and practical solution to the problem.
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.