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Old 05-14-2016, 05:29 PM   #1
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Roof Cleaning

Has anyone used a pressure washer on their Fibreglass roof?

I watched one of those how to videos and they were using one.


Sent from my iPhone 'cause I'm probably out in the RV!
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Old 05-14-2016, 05:38 PM   #2
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I would not use a pressure washer on any portion of my RV. If set up properly and used properly they are a fair solution at best. If used improperly or you slip up, you can seriously damage the caulking and seals and cause leaks. It is way too easy to make a mistake and damage something. I have witnessed a pressure washer in the wrong hands rip apart a 2X6 pressure treated board.
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Old 05-14-2016, 07:32 PM   #3
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Quote:
Originally Posted by DJP6371 View Post
Has anyone used a pressure washer on their Fibreglass roof?

I watched one of those how to videos and they were using one.


Sent from my iPhone 'cause I'm probably out in the RV!
The guys that wash my motorhome use one. I don't have a problem with it.
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Old 05-14-2016, 08:14 PM   #4
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Quote:
Originally Posted by DJP6371 View Post
Has anyone used a pressure washer on their Fibreglass roof?

I watched one of those how to videos and they were using one.


Sent from my iPhone 'cause I'm probably out in the RV!

I've used the 10,000 psi version for cleaning steel and tubing. Not for RV, for sure. However I use the 1,000-2,200 psi versions for auto and my RV cleaning. Can reach places cannot reach with rag or brush. Never have damaged seals or painted surfaces. Most commercial cleaners use them now.
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Old 05-15-2016, 08:12 PM   #5
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I've use one on my roof but only the roof. I am afraid it might do damage the paint. Jim
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Old 05-15-2016, 09:35 PM   #6
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All you need is Protect-All and a microfiber cloth. Simple on the fiberglass roof.
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Old 05-16-2016, 02:15 PM   #7
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All you need is Protect-All and a microfiber cloth. Simple on the fiberglass roof.
X2 also the stuff sold on www.washwax.com is 'da bomb IMHO.

Put that stuff on your coach and the film makes your finish slick - even bird poop (if it sticks at all!) easily wipes off.
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Old 05-16-2016, 08:13 PM   #8
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Pressure washers are not all the same... power is different and tips are different for different uses...

Use the right pressure washer with the right tip and hold the wand at an appropriate distance from the surface and you will get a better wash then just water alone.
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Old 05-16-2016, 09:14 PM   #9
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Pressure washers are not all the same... power is different and tips are different for different uses...

Use the right pressure washer with the right tip and hold the wand at an appropriate distance from the surface and you will get a better wash then just water alone.
Agreed.^^^^^
I run a wide fan tip and at about half throttle. Never had an issue. Also, start and stop off the piece your power washing. Gives you more control instead of a sudden burst in one spot.
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Old 05-16-2016, 09:21 PM   #10
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I'd use my little electric one.

Sidebar: I'm about to order a big tarp to go over the new TT.........no way I'm going to let it sit under trees for another 2 years like last one. Took every grandkid I had to get that stuff off, and it never did come completely off. Black streaks down side, and roof was awful.
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