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Old 05-09-2013, 10:40 PM   #1
Max Freedom's Avatar
Join Date: Oct 2011
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What have you used to keep your plastic dome in good shape?

I, like most of you, have an acrylic dome on the roof of my rv. What have you all used to keep the sun from cracking it.... Thanks in advance....

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Old 05-10-2013, 11:51 AM   #2
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Location: Midland County, Texas
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Simplest plan is to just replace it every few years. They don't cost much, and any DIYer can do the R&R.

Unless it's an old trailer with parts no longer available. In that case keep the trailer in a barn and keep the plastic dome covered with UV-proof covering of some sort.

Grumpy ole man with over 50 years towing experience. Now my heaviest trailer is a 7,000-pound enclosed cargo trailer, RV is a 5,600 pound Skyline Nomad Joey 196S, and my tow vehicle is a 2012 F-150 EcoBoost SuperCrew.
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Old 05-10-2013, 08:27 PM   #3
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It's not the vent cover its the sun dome.... Over the shower......
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Old 05-10-2013, 08:51 PM   #4
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Location: North America somewhere
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UV rays will make it turn cloudy, dry out and crack. It's going to happen eventually, replacement is the best option if you want a clear view of the sky. I only replaced mine when it developed large cracks that might leak. If cracks were near the edges I would just apply caulk over them to prevent water intrusion.
2000 Winnebago Ultimate Freedom USQ40JD, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"
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Old 05-10-2013, 08:59 PM   #5
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Posts: 177
303 Aerospace Protectant - Orginally made for airplanes. Good stuff.
2008 Fleetwood Discovery 40x
2002 Jeep Liberty
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Old 05-10-2013, 09:44 PM   #6
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303 is the best...use it on the vent covers as well...
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Old 05-10-2013, 09:59 PM   #7
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It doesn't soften the plastic?
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Old 05-10-2013, 10:54 PM   #8
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Since so much heat was generated with mine I painted it white. The white lets plenty of light in and the heat reduction was dramatic.

Myron & Deborah
08 HR Endeavor 40 SKQ
2012 Ford Edge Limited FWD 3.5L
Aluminator tow bar, Demco base plate
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