Bilo Posted September 6, 2010 Share Posted September 6, 2010 I just recently purchased a 90 dolphin with 90000 miles on it. It runs fine and most of the appliances work. I noticed when I bought it that there was a leak and the guy told me that it was repaired. we just had a rain and I quickly realized that there was fresh moisture by the bed over the cab I spotted a crack in the old caulk on the roof. I want to re-caulk the roof. What do I use to get the old caulk off? What do I use for caulk? I saw somewhere on this site about using Geocel 2300 but it runs very expensive and I cant seem to find it locally. is there a cheaper alternative? Any pointers would be greatly appreciated! Bilo Quote Link to comment Share on other sites More sharing options...
hellspcangel911 Posted September 10, 2010 Share Posted September 10, 2010 i will be doing the same on my 86, simply using a old screwdriver to scrape and remove the old caulk, some acetone to clean the area and then GeoCel ProFlex RV, its about 8 bucks a tube, you should be able to do the whole RV with two. I have used Silicone in the past, unless its painted it doenst handle the UV too welll and collects dust. Quote Link to comment Share on other sites More sharing options...
JohnW Posted October 19, 2010 Share Posted October 19, 2010 I just recently purchased a 90 dolphin with 90000 miles on it. It runs fine and most of the appliances work. I noticed when I bought it that there was a leak and the guy told me that it was repaired. we just had a rain and I quickly realized that there was fresh moisture by the bed over the cab I spotted a crack in the old caulk on the roof. I want to re-caulk the roof. What do I use to get the old caulk off? What do I use for caulk? I saw somewhere on this site about using Geocel 2300 but it runs very expensive and I cant seem to find it locally. is there a cheaper alternative? Any pointers would be greatly appreciated! Bilo 3M's 5200 is the best out there, once, it's on it's on and seals like a nothing i've ever used.... Quote Link to comment Share on other sites More sharing options...
Nam Posted February 19, 2013 Share Posted February 19, 2013 I've tried Proflex and it's not as flexible as the original caulk from Winnebago. Has anyone tried Sikaflex 221? Quote Link to comment Share on other sites More sharing options...
Nam Posted February 19, 2013 Share Posted February 19, 2013 3M's 5200 is the best out there, once, it's on it's on and seals like a nothing i've ever used.... Do you know if 3M 5200 remains soft and flexible afterward? Quote Link to comment Share on other sites More sharing options...
sdboltdude Posted February 20, 2013 Share Posted February 20, 2013 just finished with cabover rebuild 3m 5200 is the best!! it takes 7 days to cure it is very hard once it dry's only soft for first couple of days depending on outside temp.. if done rite no water will get pass 5200.. :)once dry's Do you know if 3M 5200 remains soft and flexible afterward? Quote Link to comment Share on other sites More sharing options...
sdboltdude Posted February 20, 2013 Share Posted February 20, 2013 I used old fashion scrapper and some gonk off ..if that did not clean old silicon try a little gasoline on a rag and clean (use caution with gas) I just recently purchased a 90 dolphin with 90000 miles on it. It runs fine and most of the appliances work. I noticed when I bought it that there was a leak and the guy told me that it was repaired. we just had a rain and I quickly realized that there was fresh moisture by the bed over the cab I spotted a crack in the old caulk on the roof.I want to re-caulk the roof.What do I use to get the old caulk off? What do I use for caulk? I saw somewhere on this site about using Geocel 2300 but it runs very expensive and I cant seem to find it locally. is there a cheaper alternative?Any pointers would be greatly appreciated!Bilo Quote Link to comment Share on other sites More sharing options...
Nam Posted February 21, 2013 Share Posted February 21, 2013 I don't doubt the 3M 5200's ability to keep water out but it's non UV tolerance and if it's hard, would it crack on these RV's movement? I think 3M 5200 is great for strong bond that's out of the sun's sign I ordered a tube of Sikaflex-221 just to try out. Proflex tends to harden over the time too otherwise it seems to work great and cheap as well. From what I researched, Winnebago uses NF-311 (NuFlex 311) on some of the newer RV exterior caulking. I ordered 2 tubes just to try out as well. They are only $5.50/tube from trailerrvparts.com For roof seal, I used Dyco 20/20 but it seem to get hardener over the time too. Time for me to try out some Dicor stuff and see what happens Quote Link to comment Share on other sites More sharing options...
WME Posted February 21, 2013 Share Posted February 21, 2013 Pro seal 34 or 230 have worked great for me. Quote Link to comment Share on other sites More sharing options...
zero Posted February 22, 2013 Share Posted February 22, 2013 OSI QUAD works very well. I had to remove a steel roof from a building that was sealed with Quad for 5 years. This was an exterior roof exposed to direct sunlight and winter temps down to 30 below 0 F;. After 5 years it was still pliable, i.e. no cracks and had the consistency of used chewing gum. Great adhesion, never hardens, and obviously handles expansion and contraction well. Steel roof does a lot of that in temps that swing from minus 30 F to 100F. It is what I'm using on my Toyota Chinook. Locally available since Home Depot sells it and also - when dry - it's paintable. Quote Link to comment Share on other sites More sharing options...
Dolphinite no longer here Posted February 22, 2013 Share Posted February 22, 2013 jdemaris- Is "OSI QUAD" the name on the tube? I can't find it in my local Home Depot but then, maybe it didn't make it this far west. John Quote Link to comment Share on other sites More sharing options...
zero Posted February 22, 2013 Share Posted February 22, 2013 Yes, the name is Osi Quad. Comes in clear and many colors. I know the NY and MI Home Depot stores have it. Quote Link to comment Share on other sites More sharing options...
Nam Posted February 22, 2013 Share Posted February 22, 2013 Good stuff, thanks. I will give it a try. My local Homedepot shows 32 tubes! Quote Link to comment Share on other sites More sharing options...
Derek up North Posted February 22, 2013 Share Posted February 22, 2013 They certainly off a wide selection of colors. http://www.osipro.com/quad-color-cross-reference.pl Searching www.HomeDepot.ca turns up nothing! Quote Link to comment Share on other sites More sharing options...
zero Posted February 22, 2013 Share Posted February 22, 2013 Maybe, like just about everything, "this product is known to cause cancer in California." Good thing I'm in NY and apparently immune. Quote Link to comment Share on other sites More sharing options...
Derek up North Posted February 22, 2013 Share Posted February 22, 2013 Just got this reply from Henkel (the parent company):- "Quad is available in Canada, sold under the "LePage" brand.". http://www.homedepot.ca/webapp/wcs/stores/servlet/SearchView?catalogId=10051&storeId=10051&langId=-15&N=0&Ntt=%2522lepage+Quad%2522&Nty=1&D=%2522lepage+Quad%2522&Ntx=mode+matchallpartial&Dx=mode+matchallpartial&s=true Quote Link to comment Share on other sites More sharing options...
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