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Old 11-23-2015, 07:56 PM   #11
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We like the light coming in through the skylight and there are no windows in the bathroom so it would get dark without the skylight
Sorry about that...

I did not think about not having a window in the bathroom. Our back door is in the bathroom and supplies plenty of light.

Don
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Old 11-24-2015, 02:44 AM   #12
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Thanks for the link wags999. Unfortunately there is no info on how well either material hold up under long term UV exposure.
It states the polycarbonate will yellow with age. Don't believe it will affect the skylight other than color.
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Old 11-24-2015, 02:47 AM   #13
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Our kitchen skylight came with a "blind" that pulls out to cover it, I also added one to the skylight in the bathroom. It also helps with light coming in and shining into the bedroom in the mornings.
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Old 11-24-2015, 08:11 AM   #14
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When you install it, I would strongly recommend using Eternabond tape to make your water tight seal. Long term no maintenance.
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Old 11-28-2015, 09:54 AM   #15
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I installled the replacement dome without any problems. The new dome is much thicker than the old one so I would not expect any problems. I don't know what material the old dome was made from but it clearly was not polycarbonate or plexiglass. It had yellowed significantly. The caulk that IconDirect recommended is butyl rubber and one cartridge will not do more than one dome (14" x 24"). That included a bead under the flange and covering the edges and screw heads. I am planning to cover the flange with self leveling lap sealer, just to be sure.
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Old 11-28-2015, 09:05 PM   #16
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I installled the replacement dome without any problems. The new dome is much thicker than the old one so I would not expect any problems. I don't know what material the old dome was made from but it clearly was not polycarbonate or plexiglass. It had yellowed significantly. The caulk that IconDirect recommended is butyl rubber and one cartridge will not do more than one dome (14" x 24"). That included a bead under the flange and covering the edges and screw heads. I am planning to cover the flange with self leveling lap sealer, just to be sure.
Yellowing is a trait of Polycarbonate, plexiglass is a brand of acrylic products. Acrylic does not yellow as poly does. If you read the link on characteristics of each it explains. Glad you had no issues installing it.
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Old 11-28-2015, 09:13 PM   #17
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Just in case anybody didn't know, wanted to know, or cares, the stock thin skylight is made by Duo-Form Plastics. I had spoke with them before coating mine. Of course there is no skylight left on the interior in ours.
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Old 11-29-2015, 01:22 PM   #18
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Well, I have read that untreated sheet of polycarbonate discolors in 5-7 years of sun exposure. Also, plexiglass is hard to break and polycarbonate is almost impossible to break, so I think my conclusion that the old dome was neither still holds. I am considering applying a UV coating to my new dome, that should extend the discoloring to about 15 years. But I am most concerned with breakage, the trailer is stored here for six months during the summer, May to November. I guess we lucked out by not being hit by hail, which would definitely have broken the old dome.
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Old 11-29-2015, 02:46 PM   #19
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For what it's worth, when I replaced the acrylic skylights in my home, they did not recommend drilling it around the edges, instead they recommended a very heavy bead of sealant around the edges and to press the dome into the sealant. You can see through the dome to make sure it makes contact all the way around. After it has setup, they recommended an overlapping bead of sealant. Their rationale for not drilling holes around the perimeter is that it promotes cracking due to uneven draw down pressure.
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Old 11-29-2015, 03:05 PM   #20
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What type of UV treatments are available for skylights? Is it more of a treatment? Or a thick coating of some sort?

Thanks in advance.... John
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