Sealing the seams

[SPLAT]

It has been recommended that I place a thin silicone bead of sealant at all seams and trim/molding edges, I really don't know how I feel about using silicone...
I'm sure we have all seen an ugly silicone job in a bathroom someplace...
I have tried to remove silicone before and it was impossible.

If I put down silicone I am afraid in a few years it will look bad and not be easy to maintain.

I did some searching and there is a product they use in manufacturing Airstream trailers, it's called TremPro 635 Polyurethane and supposedly the grey color matches bare aluminum really well.

http://airstreamsupply.com/Trempro-635

Anyone use that product, or have a product that will be easy to use/maintain in the future?

[Tomterrific]

I used Tremco VULKEM 116 polyurethane sealant. Lowes carried white and that is what I wanted for caulk. Economical at $5 compared to the $12+ 3M marine sealant which seems the same.

T

Let me ention , I hate silicone caulk. Nothing will every stick to the spot silicone is used. No paint, no glue, maybe more silicone but I'm not sure of that.

[Colemancooler]

On my roof seam i folded a 1" hem on booth pieces and applied NP1 to the seam before sliding the hems together with the top hem turned down . This will never leak and if ever removed will likely have to come off in one piece

[SPLAT]

I used Tremco VULKEM 116 polyurethane sealant. Lowes carried white and that is what I wanted for caulk. Economical at $5 compared to the $12+ 3M marine sealant which seems the same.

T

Let me ention , I hate silicone caulk. Nothing will every stick to the spot silicone is used. No paint, no glue, maybe more silicone but I'm not sure of that.

From what I understand Trempro-635 is the new and improved replacement for VULKEM 116

[tony.latham]

at all seams and trim/molding edges

I assume you mean under the trim?

You definitely need to add a good sealant product under it. I've used GE Silicone II with good success. (The regular silicone is corrosive to aluminum.) Clean up everything outside the trim with acetone.

There are probably much better polyurethane sealants out there, I just haven't tried them and the GE II was recommended by a long-time teardrop re-builder. Some use the butyl RV tape for the same purpose.

Tony

[Colemancooler]

I used butyl under my trim

[Cosmo]

Air stream sells this kit
https://store.airstream.com/product/air ... alant-kit/

This acrylic is great for skin seams. Color is silver grey. You have to look to see it. You would miss it if you glanced. Some of my seams are sealed with it. Its thin enough to flow under the seam but not too thin as to run all over the place. I think it looks better than silicone.
28430W – 16 oz can of Acryl-R Seam Sealer and Applicator Head. Use to seal all metal to metal seams, including but not limited to, segment seams, sides and bottom of riveted frame windows, compartment door frames, marker lights, and tail lights; any where a fine bead of gray sealant is required.
https://store.airstream.com/product/acr ... pplicator/

Another option is flowable silicone. It is a honey like consistency I can put in a syringe and squirt it where it Is needed.
http://www.amazon.com/Permatex-81730-Fl ... e+silicone

Blunt nose syringes which will squirt the flowable silicone precisely. This syringe produces a bead that is about 1/32 to 1/16 of an inch. I can control the diameter of the bead by moving the syringe tip faster or slower. Regular silicone would not fill the tiny gaps the flowable can.
http://www.amazon.com/Duda-Energy-Syrin ... ge_o06_s00

I do carry a tube of flowable, a syringe and a tube of regular silicone when on the road just in case I need it.

Cosmo