coOverwatch Posted October 8, 2016 Share Posted October 8, 2016 Hi all, Just about done with welding in the new(er) floor sections. need some help with what seam sealer to use around the wheel well's. when I scraped/dug out the old stuff around the lower front section (around the outer wheel well and quarter panel) it was a putty like material. Very soft and flexible. Want to make sure I use the correct stuff Link to comment Share on other sites More sharing options...
PWB Posted October 8, 2016 Share Posted October 8, 2016 (edited) I found a product at Lowes that appeared/flowed exactly the same. I just cant remember which manufacturer it was. But it was a roof sealant in a tube. Never gets fully rigid. And not sticky/gooey like silicone based products. Left a dull finish. Could not tell the difference from the original. They are pretty cheap and you may have to test a few - but its at Lowes. It was a black roof sealant similar to this one: Edited October 8, 2016 by PWB Typo (see edit history) Link to comment Share on other sites More sharing options...
smithbrother Posted October 8, 2016 Share Posted October 8, 2016 NAPA sells good quality seam filler that can be painted. You want to it dry, but remain flexible. Not all roof sealer dries, or can be painted. Dale in Indy Link to comment Share on other sites More sharing options...
RivNut Posted October 8, 2016 Share Posted October 8, 2016 A trick I learned with seam sealer is to use the automotive kind then with a little lacquer thinner on your finger tip, you can smooth it out nice and flat along the edges. Link to comment Share on other sites More sharing options...
smithbrother Posted October 8, 2016 Share Posted October 8, 2016 Yep, FEATHER EDGE it. Dale in Indy Link to comment Share on other sites More sharing options...
coOverwatch Posted October 9, 2016 Author Share Posted October 9, 2016 thanks all. When I cleaned out the rear floor pan there was some putty in the lower section where the floor, quarter panel and inner/outer wheel tubs meet up. I will take a pic of the location later today. Just want to make sure I get things all sealed up again so I don't get more rust in that spot. Link to comment Share on other sites More sharing options...
RivNut Posted October 9, 2016 Share Posted October 9, 2016 Has anyone tried that Flex Steel stuff "Sold on TV" where the guy spays a screen door in the bottom of a boat and it seals the water out? Link to comment Share on other sites More sharing options...
msdminc Posted October 10, 2016 Share Posted October 10, 2016 I have used the SEM Seam Sealer with good results in the past. Ed, I have used the Flex Seal stuff to coat a tool handle and one of my basement walls where I had some water infiltration - it worked well in both. The viscosity doesn't seem right for seam sealing it is more runny (if that is a word to describe viscosity), but it may work. I think the SEM is a better solution. You should be able to get the SEM at a local auto paint store. Rock On gord Link to comment Share on other sites More sharing options...
Seafoam65 Posted October 10, 2016 Share Posted October 10, 2016 Is Flex Seal paintable? Link to comment Share on other sites More sharing options...
smithbrother Posted October 10, 2016 Share Posted October 10, 2016 Google FLEX SEAL, read all the reviews, last time I checked they weren't good. Dale in Indy Link to comment Share on other sites More sharing options...
RivNut Posted October 10, 2016 Share Posted October 10, 2016 1 hour ago, smithbrother said: Google FLEX SEAL, read all the reviews, last time I checked they weren't good. Dale in Indy That's why I asked if anyone has tried it. I'm recommending it, basically asking the same question. Link to comment Share on other sites More sharing options...
coOverwatch Posted October 10, 2016 Author Share Posted October 10, 2016 here is the area I am concerned with. when I cleaned out that area it was more like a putty then the seam sealer. maybe it was just a lot of seam sealer in that area. Link to comment Share on other sites More sharing options...
PWB Posted October 10, 2016 Share Posted October 10, 2016 (edited) Exactly. Its got to be thick. Tellin ya, the roof sealant was perfect in my experience. - and the Flex Seal spray is way too thin. Edited October 10, 2016 by PWB (see edit history) Link to comment Share on other sites More sharing options...
PlymouthPE Posted October 11, 2016 Share Posted October 11, 2016 Strip caulking is useful for filling larger gaps as it can be pushed deep into seams. 3m has a product http://3mcollision.com/products/sound-deadening/3m-strip-calk-08578-black.html Also there are others such as Eastwood etc. Link to comment Share on other sites More sharing options...
smithbrother Posted October 11, 2016 Share Posted October 11, 2016 We called that strip caulk, DUM DUM as a kid. Lots of times in the past it was used around pipes, etc. coming thru the firewall. I have seen it to seal a COWL VENT when you didn't want to weld it shut, and also didn't want to use the vent. Good stuff, IMO. Dale in Indy Link to comment Share on other sites More sharing options...
coOverwatch Posted October 13, 2016 Author Share Posted October 13, 2016 Never thought of using Dum Dum. thanks. need to pick some up. think that was also used around the door skin attachment bolts. Link to comment Share on other sites More sharing options...
PWB Posted October 13, 2016 Share Posted October 13, 2016 (edited) Old school stuff. Only marine parts stores sell it locally, by me. Amazon was cheaper. Edited October 13, 2016 by PWB (see edit history) Link to comment Share on other sites More sharing options...
RivNut Posted October 13, 2016 Share Posted October 13, 2016 http://www.oreillyauto.com/site/c/detail/MMM0/08578/N2356.oap?ck=Search_N2356_-1_-1&pt=N2356&ppt=C0171 Link to comment Share on other sites More sharing options...
tenugent Posted October 13, 2016 Share Posted October 13, 2016 I use tremco demonic fc caulk,its used on commercial buildings around windows.polyurethane sealant,its heavy bodied and paintable. I get it at concrete supply businesses.$5-6. a tube Link to comment Share on other sites More sharing options...
smithbrother Posted October 13, 2016 Share Posted October 13, 2016 Just wondering,,,,,,,,?, do some of you old fellows like me recall it being called DUM DUM, or did I pick that term up from the body shop guys in my Dads dealership in the 50's? Dale in Indy Link to comment Share on other sites More sharing options...
RivNut Posted October 13, 2016 Share Posted October 13, 2016 My dad called it that. I went into a couple of jobbers a number of years ago and asked for it by name: "Do you guys have dum dum here?" Everyone looked at me then called their driver out from the stock room. Ed Link to comment Share on other sites More sharing options...
RockinRiviDad Posted October 14, 2016 Share Posted October 14, 2016 Link to comment Share on other sites More sharing options...
coOverwatch Posted October 15, 2016 Author Share Posted October 15, 2016 thanks all. been receiving the new body and floor panels for the 68 Pontiac this week. nothing like having two cars going at once. New shop is "done" and lift is in. Now if the builder would have just got the building permit and had the foundation inspected I would be living large... but he "forgot". so now I have attorney's involved and I sit and look at a nice big building that I have to wait probably another month to be able to use. Oh.. I also saw a 63 Riv on Craig's list in Longmont CO. has a bit of rust on it. was thinking on going and looking at it. Link to comment Share on other sites More sharing options...
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