First Trillium Window Remove, Reseal and Reinstall - Page 3 - Fiberglass RV


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Old 11-04-2018, 08:11 AM   #29
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I buy mine at Auto Body Supply Houses,it is what they use to install Windshields and Body Panels and is plentiful and inexpensive and in different shapes and thickness already.

Quote:
Originally Posted by Element89 View Post
Hi folks, we're resealing the windows of our 1973 Trillium.

We replaced the wood framing already (it was horribly deteriorated, literally falling out when we pulled back ensolite... see pics of our project here) and that has helped a great deal, but I don't think it has ever been fully resealed in the last 45 years. We're still seeing some minor leaks (coming out the bottom of the ensolite with a bit of pooling on top of the bench areas...), but nothing as bad as when we first bought it! We replaced all the screws with stainless steel when we reframed the windows, but i am now considering pulling them out and adding in rubber washers to add an extra seal in when I do the butyl tape (should have done that from the get go, i know!). As we live on the we(s)t coast, definitely want to stop these leaks!

I've shopped around locally but haven't been able to find butyl tape - hardware stores here say the used to carry it but don't anymore. Did some searching on amazon, and am seeing some that looks more like the putty you've been describing, and what i think is actual butyl tape....

Anyone mind confirming this is what I should be using? If not, if you can provide an amazon (Canada) link, that would be awesome! Also - how much do you think you need to redo all 4 windows on a Trillium? This is 50 ft.... Do i need to use two layers? This tape is 1" wide, should i cut it to 1/2" and double up?

Much appreciated!

https://www.amazon.ca/Butyl-Tape-Bla...rds=butyl+tape
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Old 11-04-2018, 08:46 AM   #30
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"Anyone mind confirming this is what I should be using? If not, if you can provide an amazon (Canada) link, that would be awesome! Also - how much do you think you need to redo all 4 windows on a Trillium? This is 50 ft.... Do i need to use two layers? This tape is 1" wide, should i cut it to 1/2" and double up?"

I would NOT cut it in half. I doubled up the 1 inch stuff. Figure close to 25 feet per larger window if you double it up. I ended up buying 8 rolls, I only have about 1 1/2 rolls left.. The front window if it has a rock guard will take more of course, basically a roll just for that window and rock guard.

I keep using butyl tape on other repairs, like side marker light replacements, rebuilding rear tail lights, and most recently installing a new cord hatch with a surface mount power inlet.

All my butyl tape came from Amazon.

If you still have leaks, what about the belly band and all the rest of the hatches, lights, etc.? I'm fortunate to have covered storage while I work on this project.

The window framing on yours looks much worse than mine, and given paint fade, looks like it has spent a lot of time stored outdoors (guess on my part). IF that is the case, I would be prioritizing the belly band along with any other trailer penetrations.
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Old 11-04-2018, 08:46 AM   #31
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Quote:
Originally Posted by Element89 View Post
Hi folks, we're resealing the windows of our 1973 Trillium.

We replaced the wood framing already (it was horribly deteriorated, literally falling out when we pulled back ensolite... see pics of our project here) and that has helped a great deal, but I don't think it has ever been fully resealed in the last 45 years. We're still seeing some minor leaks (coming out the bottom of the ensolite with a bit of pooling on top of the bench areas...), but nothing as bad as when we first bought it! We replaced all the screws with stainless steel when we reframed the windows, but i am now considering pulling them out and adding in rubber washers to add an extra seal in when I do the butyl tape (should have done that from the get go, i know!). As we live on the we(s)t coast, definitely want to stop these leaks!

I've shopped around locally but haven't been able to find butyl tape - hardware stores here say the used to carry it but don't anymore. Did some searching on amazon, and am seeing some that looks more like the putty you've been describing, and what i think is actual butyl tape....

Anyone mind confirming this is what I should be using? If not, if you can provide an amazon (Canada) link, that would be awesome! Also - how much do you think you need to redo all 4 windows on a Trillium? This is 50 ft.... Do i need to use two layers? This tape is 1" wide, should i cut it to 1/2" and double up?

Much appreciated!

https://www.amazon.ca/Butyl-Tape-Bla...rds=butyl+tape
Any RV store that sells rvs and parts sell butyl tape just go with 1" wide whatever squeezes out you can cut if off. The tape is actually very cheap.
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Old 11-04-2018, 10:16 AM   #32
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Quote:
Originally Posted by mensie View Post
Any RV store that sells rvs and parts sell butyl tape just go with 1" wide whatever squeezes out you can cut if off. The tape is actually very cheap.
My entire point in this thread is that there are 2 different kinds of tape.

All RV stores do sell the traditional Putty or Mastic Tape but far fewer sell actual Butyl Rubber Tape which is much more effective and longer lasting.
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Old 11-05-2018, 07:02 AM   #33
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From what I have read, the tape with the crinkled paper is the rubber tape and doesn't last as long. The tape with the smooth waxy paper is the butyl tape.
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Old 11-07-2018, 08:10 PM   #34
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Time for the kitchen window. Window frame was bent up, had rivets on the sides and screws on the top and bottom. So it was time.

The wood had some issues, not too bad. But with no ensolite to worry about, I replaced the wood (top and bottom). The sides did not have wood. And there was just a narrow cavity to put the vertical side wood pieces, as the kitchen cabinet has a concave vertical section on either side of the window.

I cut side pieces with a 45 degree angle on one side (to fit snug against the concave vertical fiberglass). Pieces had to be narrower than the top and bottom. I used 3/4 inch OSB for the wood, as that is what I had in my stack.


I thought I would use 3/4 inch screws on the sides, but with two layers of butyl, I used up all of my remaining 1 inch stainless screws (time to order more).

1977 Trillium Kitchen Window by wrk101, on Flickr

Old wood starting to delam:

1977 Trillium Kitchen Window by wrk101, on Flickr

Side piece with the bevel:

1977 Trillium Kitchen Window by wrk101, on Flickr

Flat side of the side piece (faces out):

1977 Trillium Kitchen Window by wrk101, on Flickr


Window with the "ooze out". I'll be trimming it back.

1977 Trillium Kitchen Window by wrk101, on Flickr
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Old 11-08-2018, 07:48 AM   #35
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thrifty bill, thanks for the pics!!

(To the two earlier posts (post #32 and #33), I agree with both posts. E.g., Camping World stocks butyl tape and it has waxy smooth backing paper. On the other hand, couple of years ago I ordered butyl tape (looked like correct smooth waxy backing paper in the photo) from Amazon, but when I received it was crinkly paper / putty tape, and I returned it. Butyl tape is easy to verify: At room temperature, it can be stretched 2 or 3 feet without breaking, similar to freshly chewed chewing gum.)
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