Arkins construction runs the bow rafter factory a manufacturer of standard and custom bow rafters since 1978 we combine our rafters and your ideas to build a contemporary design or reproduce an authentic colonial bow roof porch bridge dormer etc.
Old roof new roof joined rafters bow.
It also depends on whether the old roof was removed and you only have one layer of shingles and if it is properly ventilated.
Shop roofing offers from companies in your area.
I think the roofers might have broken some of the 5 8ths inch plywood decking in places because there.
Tie a new gable or hip roof to an existing gable or hip roof with valley rafters which perform the same function as ledgers.
Use a circular saw to cut two sets of new rafters from the same size wood by the same dimensions.
This can be a serious problem in future if not treated at the right time.
Up from the valley center.
Sagging rafters can lead to serious problems with the entire roofing system.
Bed the end of each shingle in a 2 in wide ribbon of roofing cement placed 4 in.
Sagging rafters can be a serious and deadly in some cases problem in your roofing system.
Repeat the process for the joist beneath your old roof rafter.
Measure the dimensions of the old rafters beneath your roofing surface.
It would also be very difficult to do with the roof on.
The old shingled roof was just removed and new shingles installed.
Shingle the addition roof letting the new shingles fold through the valley center and onto the old roof deck by at least 1 ft.
If the roof was installed over another layer or several layers and it is older than 20 years chances are you need a new roof.
Re lay the shingles you removed from the existing roof.
I e the original roof was a light wood shingle roof and the new replacement roof is a concrete tile roof weighing 5 or 10 times more than the original roof.
This can cause roof caving water leakage.
Is your roof in need of an upgrade.
My roof is 15 years old.
If you find your roof is sagging or a slight dip is visible then you are probably a victim of sagging roof rafters.
Then the beam or roof may sag.
Best solution is to tie the existing rafters at the wall plate level but this might not fit in with the floor levels and will not cure the bow in the roof just prevent future movement.
To remove the bow will require the roof off.
If a roof has been re roofed with heavier roofing material than the original roof was engineered for.