Best sealant?

[vman60]

I am going out today to purchase some silicone sealant to seal all the windows on the outside of the coach. Anyone reccomend the better to use as to not have to do this project every year? Also why I am add it, might as well as what everyone use's for their roofs. Mine looks like it hasn't been done in years and it is like black and grey concrete up there and cracked to high heaven. I have a water leak around the front passenger window and have tore off the thick wall paper and sheething, so today I am re-sealing all the windows, fixing that area under window and painting the entire interrior. might take me to tomorrow to finish, but I want it all done. Thanks for your help.

[az bound]

A better solution for the windows would be to remove them and replace the butyl tape. You have had 23 years of service out of them and new butyl should give that much more. It can be purchased at hardware stores ie. Lowes, Home Depot, Ace. After installing the windows run a small (1/8") bead of polyurethane caulk across the top of the frame and down the sides about 2".
For the roof there are two scools of thought. Some prefer to use Eternabond tape and cover over all seams, either over the old caulk, or remove the old and replace with Etermabond.
Others prefer Docor self leveling caulk, and just go over the old stuff.
In either case the area must be thoroughly cleaned to achieve the best bond. I would not recommend using silicone for any sealing.
There is a lot more work this way but the result will be worth the effort.

[vman60]

Do they make a clear polyurathane caulk? I went to lowe's and home depot and all they had was black and white. With the color of the frames being brown and the coach beige either 1 of those colors I am not really happy with.

[Senior Chief]

Globbing on more sealant of any kind on the exterior is not going to seal a leaking window. I would recommend you do as az bound suggests and go ahead and pull and reseal the windows with new butyl tape.

Its not difficult (maybe a little tedious) and doesn't take all that long. You'll need 2 people so one can be inside and one outside. Here's a

video link

to show you how.

Silicone is sometimes used at the TOP of windows to keep down black streaks, but its pretty much useless as a primary sealant.

[az bound]

Yes they make a clear polyurethane.