Rain water in roof AC vent in 1997 26.5 rear bath LD

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Topic: Rain water in roof AC vent in 1997 26.5 rear bath LD (Read 410 times) previous topic - next topic

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Rain water in roof AC vent in 1997 26.5 rear bath LD

February 24, 2020, 12:21:41 pm

I dont think the roof is leaking..took off vent assy and checked the wood frame for leaks and any rot..look fine thinking there is a gasket between the AC unit and roof..any one seen this.

Re: Rain water in roof AC vent in 1997 26.5 rear bath LD

Reply #1 – February 24, 2020, 12:54:05 pm

Quote from: Gwar44 - February 24, 2020, 12:21:41 pm

I dont think the roof is leaking..took off vent assy and checked the wood frame for leaks and any rot..look fine thinking there is a gasket between the AC unit and roof..any one seen this.

Between the roof and A/C, there is a thick, foam gasket that is glued to the roof. If he wood, under the interior cover is dry and water is dripping from the A/C, there is a good chance the condensate drains in the A/C are plugged and diverting the water into the interior instead of dumping it on the roof.

The A/C's mounting bolts can loosen, allowing water to leak in around the edges.
Under the A/C's interior cover are three or four small bolts that secure the A/C. Make sure they are snug.
Have you checked the A/C's exterior cover for cracks? A broken cover can left rainwater into parts of the A/C that are not supposed to be wet, it may be the cause of your leak.

If all else fails, have someone stand on the roof, with a hose and water down the A/C, to see if the source of the leak is obvious .

If that doesn't work, some Rv and body shops can pressure test the coach, useful in pinpointing leaks.
Here are some photos of Barbara's LD during a pressure test we did in the driveway We found the leaks.
Leak detection | Flickr

Larry

Re: Rain water in roof AC vent in 1997 26.5 rear bath LD

Reply #2 – February 25, 2020, 12:15:00 am

Quote from: Larry W - February 24, 2020, 12:54:05 pm

Between the roof and A/C, there is a thick, foam gasket that is glued to the roof. If he wood, under the interior cover is dry and water is dripping from the A/C, there is a good chance the condensate drains in the A/C are plugged and diverting the water into the interior instead of dumping it on the roof.

The A/C's mounting bolts can loosen, allowing water to leak in around the edges.
Under the A/C's interior cover are three or four small bolts that secure the A/C. Make sure they are snug.
Have you checked the A/C's exterior cover for cracks? A broken cover can left rainwater into parts of the A/C that are not supposed to be wet, it may be the cause of your leak.

If all else fails, have someone stand on the roof, with a hose and water down the A/C, to see if the source of the leak is obvious .

If that doesn't work, some Rv and body shops can pressure test the coach, useful in pinpointing leaks.
Here are some photos of Barbara's LD during a pressure test we did in the driveway We found the leaks.
Leak detection | Flickr

Larry

Re: Rain water in roof AC vent in 1997 26.5 rear bath LD

Reply #3 – February 25, 2020, 09:15:08 am

Thanks..its not the condenser for sure..happens only after a rain...i will inspect the gasket ...im sure thats the problem

Re: Rain water in roof AC vent in 1997 26.5 rear bath LD

Reply #4 – February 25, 2020, 01:15:46 pm

Quote from: Gwar44 - February 25, 2020, 09:15:08 am

Thanks..its not the condenser for sure..happens only after a rain...i will inspect the gasket ...im sure thats the problem

Make sure the plastic exterior cover is not cracked and letting water in. The cover should be removed every couple of years to clean dirt and debris from the condenser fins and around he compressor, especially if the A/C is used a lot.

Pull the interior cover and tighten the small bolts that secure the A/C.
Unless the A/C has been previously removed, the gaskets usually stay in good shape.
To replace requires removing interior cover, disconnecting the power and then lifting the A/C unit up and off the roof opening, it not an easy job, requiring two people or a lift.
The gasket is glue to the roof and a job to get off, for replacement. Glue the new one to the roof.

Larry

Re: Rain water in roof AC vent in 1997 26.5 rear bath LD

Reply #5 – February 25, 2020, 09:01:56 pm

An easy check - be sure there is no debris that might be clogging the drain. If you are checking the gasket you've likely already cleared any debris, it's worth a double check.

Re: Rain water in roof AC vent in 1997 26.5 rear bath LD

Reply #6 – March 03, 2020, 12:08:12 pm

Just had a rain...Looks like it is a cracked A/C shroud...

Re: Rain water in roof AC vent in 1997 26.5 rear bath LD

Reply #7 – March 03, 2020, 01:06:24 pm

Quote from: Gwar44 - March 03, 2020, 12:08:12 pm

Just had a rain...Looks like it is a cracked A/C shroud...

Find the crack and cover it with duct tape until a replacement cover is installed.

Larry

Re: Rain water in roof AC vent in 1997 26.5 rear bath LD

Reply #8 – March 03, 2020, 01:38:31 pm

And before installing the replacement cover, give it several coats of white paint. Protecting the plastic from UV will greatly extend its life.

Re: Rain water in roof AC vent in 1997 26.5 rear bath LD

Reply #9 – March 04, 2020, 12:10:34 am

Thanks guys.

Re: Rain water in roof AC vent in 1997 26.5 rear bath LD

Reply #10 – March 04, 2020, 12:10:57 am

Thanks guys.

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