Window Installation

[Capebuild]

Hello....
My trailer will have windows, all constructed from polycarbonate. I have a large, curved window in the front of the trailer which I'd like to get other's thoughts on regarding the installation.

I had originally thought I'd make the window a bit smaller than the opening created in the framing and use either an EPDM or rubber gasket to "fix" the window in place (first image). I'm now wondering if it might be better to make the window a bit larger than the opening, position it on top of the aluminum siding and hold it in place using a gasket of some sort. Steele Rubber products has some "S" shaped gaskets I'm exploring to see if they might work (second image).

I have absolutely no experience with this sort of thing and looking for any suggestions if anyone has any thoughts. I've attached two concept images, one with the glass inside the frame the other with the glass sitting on top of the siding.

Thanks very much!
John

[Onajourney]

Glad you asked this question as I too am working on a window design. Mine will be a smaller 12x48 stargazer in stalled in the angled part of the front roof. It was one of the reasons to slant it so water does not sit on it. I have been watching YT videos on the molding you suggested and they seem like a good option but I have not found how much smaller the window needs to be than the rough opening. I am going to email the manufacturer unless you know? My crude window design is still on the table till I sus all this out. I am using 1/4 ply skinned with .04 aluminum on the roof so I also need to check they make molding to accommodate that thickness.

[JasenC]

Just tossing this out there.

You can form Polycarbonate with a heat gun. If you were just doing some gentle curves, shouldn't be to much trouble.

[Onajourney]

I am going with Trim Lok. Customer Service is fantastic. I sent them an email with the question and someone called me within 2 hours and emailed me the following.

[Wolfgang92025]

I had originally thought I'd make the window a bit smaller than the opening created in the framing and use either an EPDM or rubber gasket to "fix" the window in place (first image). I'm now wondering if it might be better to make the window a bit larger than the opening, position it on top of the aluminum siding and hold it in place using a gasket of some sort.
John

I used the first method you mentioned for the round windows on the side of my trailer.
12 years later, no problems.

[aggie79]

Your design looks like it should work, but you might want to consider the potential impacts of water ponding on the upper side of the stargazer window. Perhaps you could install a transverse piece of angle aluminum to divert water running down from the roof to the sides of the stargazer window.