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#1 |
Registered User
Join Date: Apr 2011
Location: Fairview Park, Ohio
Posts: 1,031
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Seam sealer for gutter?
1970 c10
So I'm working on the cab and struggling with the gutters. My buddy works for 3M and gave me some 2 part seam sealer to try. It was a cartridge and pumped through a air powered gun with mixing tip. Anyway. The problem is that it's bumpy and pretty bad looking. You couldn't really smooth it off with your finger much without making it worse. I did sand it to try and get it better but it's just not coming out that great. Being a cabinet maker and caulking countertops often I'm quiet confident with that unless the caulk is too thick Any thoughts on what you've used and the results greatly appreciated. I can get it out with wire wheel on hand grinder if needed to start over. Thanks! Mark Posted via Mobile Device Last edited by rockyrivermark; 05-22-2017 at 05:54 PM. |
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#2 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,623
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Re: Seam sealer for gutter?
I can't help much, but I'll share my experience which was kinda similar to yours as far as end results.
I got one-part 3M Urethane Seam Sealer #08367 from my local NAPA store (the only stuff they had). It's black like tar, somewhat thick, and I made a great mess but couldn't get it to lay down nice & smooth. Finally said screw it, it's good enough for an old work truck, and at least the gutter is sealed. After drying for several days, I painted it white to more-or-less match the roof. I wouldn't accept these results on a really nice truck, but I don't even notice it anymore. https://www.napaonline.com/en/p/MMM08367
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#3 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,275
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Re: Seam sealer for gutter?
3M 08307 is what I used for the horizontal. It was very easy to apply with a cheap manual gun I bought off eBay. The 3M 08308 is a different story. I used it on the vertical parts. It was much thicker and did not want to lay down smoothly. I used my dremel with a flap wheel to attempt to smooth it out but it left a lot of low spots that I had to fill in with a 2 part epoxy in a couple spots. The 3M stuff can be sanded in 15 minutes so it sets up fast. I laid down a tape line on the roof as a "stopping point". It worked ok. I don't have it completely smoothed out yet.
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#4 | |
Registered User
![]() Join Date: Mar 2016
Location: Wylie, TX
Posts: 53
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Re: Seam sealer for gutter?
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#5 |
Registered User
Join Date: Sep 2006
Location: Scott City Missouri
Posts: 27
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Re: Seam sealer for gutter?
I always thought you could thin it slightly with some lacquer thinner and then use your fingers to smooth it over. Do not know if that works on the two part though.
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blue 68 c-10 work in progress yellow/white 72 Cheyene Sold! Green 71 Vw Bug ![]() |
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#6 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,275
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Re: Seam sealer for gutter?
You may be able to do that, but you better hurry if you are going to, because the stuff sets up VERY quickly. I did not remove the tape as soon as I was done and I had to use a utility knife to cut the sealer along the tape line and then sand the edge to give it a chamfer.
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#7 |
Go Pack Go!
Join Date: Nov 2005
Location: Green Bay
Posts: 2,669
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Re: Seam sealer for gutter?
3M 08307 self levels and works great for the horizontal drip rails.
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#8 |
Registered User
Join Date: Jul 2016
Location: Savannah GA
Posts: 169
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Re: Seam sealer for gutter?
I used a SEM high build self level two part in a gun and it worked awesome. I can give you part number but it would be the weekend before I am around it again.
Last edited by 71BUCKET; 05-23-2017 at 07:03 PM. |
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#9 |
Registered User
Join Date: Apr 2011
Location: Fairview Park, Ohio
Posts: 1,031
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I ordered the 3m self leveling. See how that goes.
QUOTE=71BUCKET;7950249]I used a SEM hi build two part in a gun and it worked awesome. I can give you part number but it would be the weekend before I am around it again.[/QUOTE] Posted via Mobile Device |
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#10 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,385
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Re: Seam sealer for gutter?
I bought Auveco seam sealer from the local paint shop when I bought the paint to repaint the cab roof. Worked great, and 1/3 the price of 3M (which I will readily acknowledge makes the best products, ever, but I was being cheap).
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#11 |
Registered User
Join Date: Dec 2009
Location: El Dorado Ca
Posts: 3,374
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Re: Seam sealer for gutter?
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#12 |
Registered User
![]() Join Date: Mar 2016
Location: Wylie, TX
Posts: 53
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Re: Seam sealer for gutter?
I found a single 200ml cartridge was enough in my case. I didn't have enough extra to be worth keeping, but it was enough to do the job.
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#13 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: Seam sealer for gutter?
I've used a #M product in a squeeze tube off the shelf at NAPA. I believe it was urethane by the texture and sty pliable consistency. I believe it was milky clear like silicone. That stuff worked on there well, looked good, but it failed. A year later I noticed it was lifted at the lip on the drip rail at the corner. Started playing with it, and realized once I got a grip on it after rolling it off the edge enough I could pull the whole deal off the truck where I found water had been laying. I had stripped to bare metal and repaired as proper as proper can be. The product had flat out failed. Fortunately no rust had developed.
I asked my body shop supply what was best and they sold me this stuff from Canada that manufacturers supposedly use. With all the confidence in the world I redid they whole deal. That stuff self leveled and set up hard hard, like seam seal should. Now I see it is all cracked up. Time to grind all that out and use what I learn is best out of this thread. Prolly SEM because everything else of theirs has been good that I have used. This product was Dominion Sure Seal. Says on the tube,"Worldwide Supplier To Automotive Manufacturers". I don't know what went wrong. It could have been the lacquer thinner I used to smooth it out? Naturally they say use their solvent, but don't they all? It also says use their prep and they probably sell their own rags, too! It says on the tube it stays flexible and mine is hard as a rock
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#14 |
Registered User
Join Date: Apr 2008
Location: Oceanside, CA
Posts: 72
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Re: Seam sealer for gutter?
I used Dynatron 550 Auto Seam Sealer (Amazon) and am happy with it. I used it because the sealer does not run on vertical surfaces, can be painted, and is permanently elastic. No complaints. Would use it again.
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My other vehicle is unmanned.... |
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#15 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,100
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Re: Seam sealer for gutter?
I have copied a post from my Suburban's WMB thread about doing this. Using the wax and grease remover with a rag helps to get a smooth finish. You may also want to check to see if your sealant is past it's shelf life.
"Things have progressed to the point that it was time to apply the new seam sealer. The first photo shows it prepared and taped off. We initially were going to use the self leveling (photo 2) variety for the front and sides and the heavy body for the rear, but decided that the gaps above the windshield may be to large and the sealant would most likely run inside and not fill the gaps. So we used the heavy bodied on all of it. With this much seam to fill we worked in pairs to apply the sealant. Even so it was hard to stay ahead of the cure time. It came out OK, but like caulking I get more on me and things that I don't want it on. We used wax and grease remover to clean up my mess and to help feather edge it. The front was a pain to try and get smooth due to all of the misalignment of the rail and the roof panel. There is almost no channel on one corner (photo 4). There have been 2 pickups through the shop and neither one of them had the issues that mine has. And the last picture shows the final result." There are more photos in the thread here. http://67-72chevytrucks.com/vboard/s...=698377&page=3
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#16 |
Special Order
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Location: Mt Airy, MD
Posts: 85,859
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Re: Seam sealer for gutter?
Ok, now all I need to know is what wax & grease remover did you use? Thanks for sharing.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#17 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,100
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Re: Seam sealer for gutter?
I'm pretty sure it was SEM Solve.
And you are welcome sir.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#18 |
Registered User
Join Date: Jul 2016
Location: Newport Heights, CA
Posts: 1,000
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Re: Seam sealer for gutter?
Was one tube of SEM 40477 enough?
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Glenn 1960 Burro Corvair/VW Buggy - Factory made in Santa Ana, Ca 1929 Ford Model A Roadster - traditional pre-war banger hot rod |
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#19 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,100
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Re: Seam sealer for gutter?
Yes it was enough for the drip rail, but we needed a little more to do the seams on the door frames and a couple of spots under the drip rail in the door frames.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#20 |
Registered User
Join Date: Oct 2009
Location: Gardnerville Nv No Mo Cali!!
Posts: 869
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Re: Seam sealer for gutter?
I just used 3M 08307 on my drip rail not two hours ago. I shot a 3/8 in bead (Against the outer lip)all around the horizontal part. No masking was required. One 200ML tube pack is all I needed. This was the first time I've ever done a drip rail seal and I can tell you it's impressive. It leveled out as smooth as glass and dried hard in minutes.
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#21 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,100
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Re: Seam sealer for gutter?
Just to clarify my information was from when I did my Burban. Which has about 50 yards more drip rail than a pickup.
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 |
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#22 | |
Senior Member
![]() Join Date: Jan 2012
Location: Texan, back in TX
Posts: 2,152
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Re: Seam sealer for gutter?
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#23 |
Registered User
Join Date: Apr 2011
Location: Fairview Park, Ohio
Posts: 1,031
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Well I just laid down the self leveling 3m Seam sealer and I can tell you that is absolutely the product you want to use. I laid a bead then smoothed it off with a 1" disposable brush right away and it leveled out very nicely.
I'm priming the cab tomorrow and paint the following day. I'll post pics. So far the restoration is coming along nicely. It will be on the road in about 2-3 weeks. Pics of fender and doors just sprayed yesterday. Posted via Mobile Device |
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