For example tile roofing weighs way more than your typical asphalt shingle roofing.
Sagging porch roof roofing.
Sagging rafters can lead to serious problems with the entire roofing system.
If your home has converted from shingles to tile you may need to add structural bracing in your attic to hold the extra weight.
After that use a piece of lumbar strapping to keep the plywood in place until you can get a roofing repair expert to fix it.
Next place your piece of plywood and styrofoam foam side up against the damaged roof decking.
Sagging roof repair costs can vary if extra weight is the problem additional joists or rafters can be added to shore up the additional weight which.
Now carefully remove the bracing and lower the porch roof on to the new beam images 3 and 4.
Learn how to install a two column design system to properly support a porch roof.
A roofing pro may find that the roof is sagging due to rotten sheathing.
If you notice that there is a visible dip in your roof chances are you have a problem with one or several rafters and you may soon be facing more issues like water leaks bowed out walls or your roof caving in on you.
Cost skill level.
This can happen for different reasons for example if the roof tiles were replaced at some point with a heavier alternative which has slowly weighed down the timber frame supporting the roof.
Push up on the plywood until the foam is touching the underside of the roof decking.
If water has penetrated through shingles the plywood can warp weaken or rot so that the roof looks as if it s sagging between rafters.
Another reason your roof may be sagging is because it can t handle the weight of the roofing material.