After that to make it flush with the roof of the existing house cut the two outer rafters.
How to fix porch roof with different pitch.
Metal porch roof s today.
For the side cut of jacks on a major roof take on the tongue of the square the run of the common rafter of the minor roof and on the blade the length of the intercepted common rafter of the major roof.
Scribe on the tongue fig.
Residential roofing with different pitches does not appear cohesive.
Remove the existing roof covering down to the underlying.
If it is not possible to match the existing roof choose a pitch that is shallower.
We wanted to make the porch roof as steep as possible while keeping the peak of the roof below the wall to roof intersection at the top of the shed roof.
Prepare two pieces of lumber with a 1 1 inches width.
It can also be a different color.
You have to do it thoroughly so that the rafters sit flush on it.
If the pitch of your porch roof is low the roof should be metal.
You do want the porch roof to look different from your main roof.
Match the roofing material on the covered porch with that of the main roof.
Side cuts of jacks for uneven pitches take the length of rafter of the minor roof.
Alter the pitch on a flat or low slope roof with some type of rigid foam insulation.
Make a cutting on one of the sides of the horizontal roof beam on an angle.
Take a piece of the lumber and then slip it under the roof pitch that has a higher position.
After a taking some measurements and doing a bit of ciphering we established that the steepest pitch we could use on the porch roof was 4 in 12.
After that cut each of them to fit the length of the joined area.
Scribe on the blade fig.
At least two different types are made in sloped panels.
Attach the horizontal beam by using a nail gun.
The primary function of these two items is for sealing the edges of the roof.
Your choice of material will impact what pitch your roof can have.