Using epdm roof repair tape from the rv supply store we carefully mended and extended the rubber roofing back to where it had been earlier.
How to repair a sagging rv roof.
Apply the permanent fix.
The solution for a sold roof that sags is to first determine and rectify why it sags then remove the rubber membrane and either replace the top decking with thicker plywood preferred or simply install another layer of plywood over the existing plywood decking.
Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your roof is sagging.
Slide each piece into position on either side of the 14 opening taking care not to disrupt the roof insulation in the process.
The fix create a support rib.
Decided to fix it this week by using a 2x2 steel tube across the roof and a 3 4 thick by 4 foot long red oak board on the inside to pull the roof up to the steel tube on the outside.
Fixing a truss or rafter.
The roof around the a c unit has sagged down over the years before we picked it up.
Also inspect the metal or plywood gusset plates used where your wood meets on a truss look for damage that includes cracks rot breaks and any other impairment.
Complete guide to fixing a leaking rv roof 9 types explained identify the source of the leak.
We next installed the new foam gasket material to the bottom of the a c unit and carefully hoisted the unit back in place.
Next apply new sealant and a new gasket and then reinstall the air conditioner.
I start tearing down the ceiling to start the repair.
You will need to remove the shingles and the old decking however which means there will be an exposed hole in the roof.
If the sagging roof is due to rotting or warping roof decking the repair will be much easier.
This may be problematic in winter months but allowing the roof to continue to sag can lead to greater problems such as a cave in.