butyl Rope versus adhesive from tube

[hpg4815]

I found a thread (link below) that my question fits, and replied but I never get responses unless I post a new thread. So sorry about this. Let me know I I am doing something wrong.

Good conversation I replied and I added my post from there below that.


Post in thread 'Can i glue in my own rear window.'
Can i glue in my own rear window.

Hi all, read through this and I am still not clear on the path on how I should reinstall my front and rear glass for my 72 charger. Based on what I read and my understanding of cars I agree with the following:

My car is a unibody and will have some flex in the body. I would probably want the glass to float in that scenario so to avoid any cracking of the glass.

Using butyl rope (attached pic) vs adhesive (professional stuff used today) will allow me to install the glass as I can control the rope better than trying to lay the adhesive down with a caulking gun. Something that most likely should be done by someone who does it regularly.

question is, if I dry fit the glass (front and back) and it meets the channel all the way around. Will Using the rope will should allow me to do it myself, have a complete seal all the way around, save some money, and meet the installation stands of 1972?

 

[pnora]

I would use what the factory used in 72.

 

[snakeoil24]

Use the Butyl rubber caulk in the tube.

 

[R413]

Use the rope, it's easy! It will be the same thickness all the way around.

Having a helper is so much easier for a beginner. And it takes just a few minutes. Wear gloves and don't get skin oil on glass or it make leak there.

 

[eldubb440]

rope is the ****........ if you use stuff in a tube, you need to sit the glass on 5/16 thick rubber blocks or it will sink in the goo and affect the trim fit..........

window weld primer on the bed and the glass will "grab" on to the butyl rope

 

[hpg4815]

Use the Butyl rubber caulk in the tube.

Over the rope? Any reason why?

 

[hpg4815]

Use the rope, it's easy! It will be the same thickness all the way around.

Having a helper is so much easier for a beginner. And it takes just a few minutes. Wear gloves and don't get skin oil on glass or it make leak there.

Thanks. I will try. Should I use the rope for both front and back? Have you used it. Thanks.

 

[59pwrwgn]

A butyl type sealant was used originally and is probably easiest for you to use and install for your first time. It will also give you a even height for your trim. Definitely use a helper. Dry set the glass and put a piece of tape on the body and glass to help center it for the final set. Best to do on a warm day or warm shop so the butyl compressed easier. Rubber setting blocks would have been used on the bottom. If you have a good clean body surface, you shouldn't need a primer. CL laurance may by the only ones still make butyl primer.
Urethane is what comes in a tube. It should also work. You would need to notch the tip so that you can lay a tall V shape bead. You need a primer for the glass side for UV control and maybe the body if it requires a primer in general. You would need to be more careful setting to get an even height for the trim and also not have it ooze out where it might show.

 

[R413]

Thanks. I will try. Should I use the rope for both front and back? Have you used it. Thanks.

Yes both F and R. I've used it many times. Works like a charm. Do it on a warm day, make sure glass is clean and degreased. Use window weld primer on the body. Little rubber blocks at bottom of glass so it doesn't slide down and rub body. They come in a 3M kit.

You put the glass down just once so a helper is nice. Lay it on the ribbon and press it down.

Easy Peasy!

 

[eldubb440]

no rubber gasket on the front of a 71 - up?

 

[Rishi]

The rope measures it out nice and evenly. The schmutz from the tube is harder to control the quantity you're laying down. The dangers with the tube is not putting down too much, so it oozes out and interferes with the trim, or making too wide a bead, so the trim cannot later cover all of the bead. Not to mention it's a little more messy. Putting down too little, so it doesn't make a good seal is less of a risk, but it can happen. The goo from the tube seems easier to clean up, though.

 

[gkent]

How much do pros want to come and install two pieces of glass ??

 

[gkent]

Last summer I was looking over a very nicely done 69 RR restoration. Since I've owned mine for over 50 years and have taken it down to the bare shell I have a pretty good idea of how they should look when done. One thing that stuck out like a sore thumb was the rear window glass. It was obvious it was put in with tubed stuff and not the rope. The stuff was uneven and squeezed out well beyond the trim on the inside and the exterior trim was a poor fit. Rope all the way !!

 

[moparmarks]

no rubber gasket on the front of a 71 - up?

Nope.

 

[moparmarks]

I can't have many pieces of glass I've set using the rope. 3/8" for the windshield and 5/16" for the rear glass.

 

[T2R9]

How much do pros want to come and install two pieces of glass ??

My 71 was $300 for front and rear including installing the stainless trim.

 

[R413]

It's just so darn easy to put these windows in with the rope sealer. If you can do a brake job then you can do the windows.
There is no sense paying some half assed glass jocky $300 to do this job. You care more about your car then they ever will.
https://www.gmesupply.com/3m-windo-weld-38-inch-x-15-foot-round-ribbon-sealer

 

[hpg4815]

It's just so darn easy to put these windows in with the rope sealer. If you can do a brake job then you can do the windows.
There is no sense paying some half assed glass jocky $300 to do this job. You care more about your car then they ever will.
https://www.gmesupply.com/3m-windo-weld-38-inch-x-15-foot-round-ribbon-sealer

I agree, so the consensus is the butyl Rope would be sufficient to use.