We next installed the new foam gasket material to the bottom of the a c unit and carefully hoisted the unit back in place.
How to repair a sagging rv roof.
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.
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.
Apply a temporary fix until you can make a permanent fix.
Knew it when we bought it so it s not a surprise.
Apply the permanent fix.
If the sagging roof is due to rotting or warping roof decking the repair will be much easier.
The roof around the a c unit has sagged down over the years before we picked it up.
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.
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.
The fix create a support rib.
Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your roof is sagging.
You will need to remove the shingles and the old decking however which means there will be an exposed hole in the roof.
Sags in other areas of the roof aluminum models.
Slide each piece into position on either side of the 14 opening taking care not to disrupt the roof insulation in the process.
Fixing a truss or rafter.
Next apply new sealant and a new gasket and then reinstall the air conditioner.