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  #1  
Old 03-07-2019, 06:21 PM
jeffwhip jeffwhip is offline
 
Join Date: Jan 2014
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Default Window Installation

I recently went down to Glo Aircraft Painting in DFW and was talking to Mark about my future paint job. He asked me several questions about my upcoming window installation and brought up something I hadn't thought of.

He told me that he has seen several people bring planes in to be painted where the windows had been glued in and instead of fiberglassing over the outside, the people had elected to use proseal.

Mark said the individuals had taped off the window and the finished product looked like a rubber seal. Has anyone here done that? What are your thoughts about gluing the windows in with Lord Adhesive and then using proseal? This would seem like it would eliminate the possibility of the paint cracking. What is everyone's thoughts?
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  #2  
Old 03-07-2019, 06:42 PM
Kyle Boatright Kyle Boatright is offline
 
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If I was doing it again, I'd get the black Lord Adhesive with the (relatively) short cure time and glue the aft and door windows with that. Those windows are small enough I'm pretty sure I could get the windows in before the adhesive set. I'd fill the gap around the windows with proseal and be done.

Depending on how the small windows went, I'd consider doing the windscreen the same way. However, the short working time of the black adhesive would come into play in that decision. It would be an expensive mistake if you couldn't get the windscreen set in time.

I haven't seen anyone put a wide band of proseal over and around the windows, which is what you're contemplating. It might work, and at worst, you could scrape/sand it off if you didn't like the first one, then come up with an alternative.
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  #3  
Old 03-07-2019, 08:07 PM
rocketman1988 rocketman1988 is offline
 
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Default Black Lord Adhesive

I'm not sure you'd have the time even with the small windows. The working time with the black lord adhesive is no more than 10 minutes...
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  #4  
Old 03-07-2019, 09:01 PM
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Bill Boyd Bill Boyd is offline
 
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I did SilPruf, following a very professional tutorial on YouTube.

No regerts







My paint may go on to do lots of things, but cracking around the windows is not one of them.
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Last edited by Bill Boyd : 03-07-2019 at 09:14 PM. Reason: added pix
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  #5  
Old 03-07-2019, 09:34 PM
Kyle Boatright Kyle Boatright is offline
 
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Quote:
Originally Posted by rocketman1988 View Post
I'm not sure you'd have the time even with the small windows. The working time with the black lord adhesive is no more than 10 minutes...
You don't think so? I'd estimate that 5 minutes is very doable with the small windows. Run a bead of adhesive - 1 minute. Place the window - 1 minute. Press and cleco into place - 3 minutes.
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  #6  
Old 03-07-2019, 11:22 PM
lr172 lr172 is offline
 
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Quote:
Originally Posted by Kyle Boatright View Post
You don't think so? I'd estimate that 5 minutes is very doable with the small windows. Run a bead of adhesive - 1 minute. Place the window - 1 minute. Press and cleco into place - 3 minutes.
10 minutes seems very doable. Just a limited margin for mistakes.

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  #7  
Old 03-08-2019, 07:24 AM
rocketman1988 rocketman1988 is offline
 
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Default well...

Maybe I used a bit too large of a bead of lord adhesive but I did not want any voids. So, it squished out and I wanted to make sure of a nice clean fillet inside and out.

I had sufficient time with the white lord adhesive to easily accomplish this on the rear windows. The doors worked out fine but just barely as the adhesive was nearly unworkable at the end.

The windshield I had the same issue due to excess adhesive squeezing out in front of the cabin top brace...difficult to clean up without making a mess.

Overall it turned out fine, nice fillets on the inside and outside and more importantly, no voids...

It would definitely suck if the adhesive hardened before you were done...
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  #8  
Old 03-08-2019, 01:11 PM
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majuro15 majuro15 is offline
 
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I used Sikaflex but the same process as the SilPruf method requiring no fiberglass work. I'm extremely pleased with the result thus far. I haven't painted yet, but the install and finished bead that will go on after paint results in a very nice look in my opinion. The install was rediculously easy as well.
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  #9  
Old 03-08-2019, 05:17 PM
jeffwhip jeffwhip is offline
 
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Quote:
Originally Posted by majuro15 View Post
I used Sikaflex but the same process as the SilPruf method requiring no fiberglass work. I'm extremely pleased with the result thus far. I haven't painted yet, but the install and finished bead that will go on after paint results in a very nice look in my opinion. The install was rediculously easy as well.
I don't think I've heard of Sikaflex. I'll have to research that and see if that's better than Lord Adhesive.
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  #10  
Old 03-08-2019, 06:05 PM
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wjb wjb is offline
 
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Sika is used all the time by the two seater crowd .. I did my main canopy and rear window with the stuff with great results. No screws!

Sikaflex 295 UV is what is typically used for a plexi to metal bond. Lots of posts here on VAF.

It's a lot less messy than pro seal.
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