Community Forums

C5c5 · 07-10-2020, 02:06 PM

Greetings!

I need to re-seal all of my RV windows this weekend. What are the best products to get locally (Home Depot, hardware store) to do the best job possible?

Dsallach · 07-10-2020, 03:05 PM

I used a product called Lexall. It is a clear sealant. It has excellent adhesion and expansion flexibility for vibration and dissimilar material hot/cold expansion. It is uv resistant. It is a tenacious adhesive sealer. Be sure to remove any that squeezes out before it sets up. The biggest issue with it is it’s a bugger if you ever need to remove the window again. I figured if I did it properly I would never need to remove it again.
I’ve also heard of people useing polyurethane products such as pl5200. Others have used dicor.

Bob_C · 07-10-2020, 04:51 PM

Butyl tape....

LSC9901 · 07-10-2020, 07:20 PM

Quote:

Originally Posted by bob caldwell

Butyl tape....

That's fine if you are removing the window, mother wise I wouldn't use it to try and seal around the window.

**Spdracr39** · 07-10-2020, 07:35 PM

Lexall is probably the best silicone based sealant out there. If at sometime in the future you need to reseal it will require a removal of the old sealant first and that's more difficult with silicone based.

96 Wideglide · 07-10-2020, 08:16 PM

Quote:

Originally Posted by LSC9901

That's fine if you are removing the window, mother wise I wouldn't use it to try and seal around the window.

But that's the proper way to re-seal a window!

Bob_C · 07-10-2020, 08:22 PM

I've done 9 windows in this 5er, as preventable maintenance, have no leaks and no caulking.....use enough tape to get squeeze out and trim it off...

1320Fastback · 07-10-2020, 09:59 PM

Home Depot will have rolls of Butyl Tape. We use it in the trades to seal the walls to the concrete slabs to prevent insect and air leakage.

I've done two windows with it, so far.

sam-3 · 07-10-2020, 10:33 PM

I have had two TT that DH and I have taken ever window out and used butyl tape around the window interior9round part). The window is then inserted back in. After a few days the excess butyl tape was removed with the edge of a five'none tool. Then Lexel caulk was applied on the exterior of each window. This is a premium caulk costing about $10.00 per tube at Ace Hardware or on line. It comes in clear or white. I realize the OP was talking about just resealing the window without removing. Just wanted to clarify the use of butyl tape and caulk. Many don't realize the need to remove the windows after five or six years of ownership. Then you can get wall water damage. This is what happened on our firts TT as we didn't realize the need to do this preventive maintenance. On our second used trailer we just caught the beginnings of delamination around the escape window. One window was cut a little too big at the opening. DH shimmed it up and reinserted the window. Utube has a tutorial on how to remove your window. It can easily be a DIY job if you have six to seven hrs to do the job per window.

C5c5 · 07-11-2020, 04:03 AM

Quote:

Originally Posted by sam-3

...I realize the OP was talking about just resealing the window without removing...Many don't realize the need to remove the windows after five or six years of ownership...

Thank you for your comment! I actually was referring to completely removing the windows for all new sealing. I should have mentioned that.

Gary RVRoamer · 07-11-2020, 07:19 AM

If you think you have a leak, the only correct way to fix is to remove the window and use new butyl tape or caulk to re-install. I prefer the butyl tape for DIY jobs, but pro window shops sometimes squeeze a bead of a suitable window caulk instead. It's faster if you are doing lots of windows all day long.

Schuby · 07-11-2020, 08:45 AM

https://www.emseal.com/specialty-gas...-sealant-tape/

LSC9901 · 07-11-2020, 02:40 PM

Quote:

Originally Posted by 96 Wideglide

But that's the proper way to re-seal a window!

Agreed ..... if you are taking the window out of the RV, which was made clear in a later post.

153stars · 07-11-2020, 05:41 PM

If your removing windows I would order dicor butyl tape and finish with proflex clear on outside lip to keep the edge clean from any butyl stickiness and oozing out later. The Lexel is very good but heavy/thick difficult in the thin lip/bead application you going to have the warmer the better. It would be better suited in a deeper 90 like belt molding.