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Sagging roof at A/C units

I have a 1997 Intrigue. At both A/C units the roof is sagging and holding water. What are the roof trusses made of and how do I fix the sagging roof?

Let me give a little more information. The roof is fiberglass and is in good shape. There isn't any evidence of leaks inside the coach or around the A/C units. There's no rot that I can tell. I was wondering what kind of trusses are in the coach in case I could somehow strengthen those around the A/C units. One thought I had was to place under the fiberglass large plywood wedges that are tapered  away from the A/C units to gain the height needed to cause the water to roll off the roof. My guess is that I need to raise the roof at the A/C units 1/2 to 1 inch. Since I have never done this kind of repair before I was looking for some good advice.

Glenn

Re: Sagging roof at A/C units

Reply #1 –
You can prop up sagging areas by using the same rubber material and then just cut it based on where it needs to be placed. It’ll need to be bonded with bitumen after applying the rubber. This is a great example of how to fix a sagging flat roof.

Re: Sagging roof at A/C units

Reply #2 –
Thanks for responding and sorry for not getting back to you sooner. I have a fiberglass roof on my Intrigue so that idea might not work.