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Old 09-14-2015, 07:57 PM   #1
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5200 for interior

Reading on FB about running 5200 bead along all joints on interior side of outside walls to make weatherproof. Has anyone heard of this?

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Old 09-14-2015, 08:12 PM   #2
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Most of us that sealed from the inside have used trempro 635. If you are talking about 3M 5200 that stuff is permanent, right?. You never know when you might need to redo something.... For instance, I put Trempro on all the floor bolts in the c channel, then remembered I needed one for the ground wire so had to remove the sealant on one. Also, what if a panel needs to be replaced due to an accident? 5200 would make that difficult, in addition to being really expensive!

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Old 09-14-2015, 09:32 PM   #3
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From 3M about removing 5200. Thought it might help.
If the adhesive sealant is: UNCURED Clean surfaces with 3M General Purpose Adhesive Cleaner (part number #08984) or acetone. DO NOT use alcohol-containing solvents, which will inhibit the cure of the sealant. CURED Polyurethane adhesive sealant must be removed mechanically if cured. Use a knife, razor blade, piano wire, putty knife or sandpaper. Heating to remove 5200 and 4200 is not recommended because of the vapors given off and possible damage to the substrate. 5200 is meant for permanent applications. If removability is important in your application and you still need adhesive qualities use 3M Marine Adhesive Sealant Fast Cure 4200. Think of 4200 as being the same as 5200 but it is half the strength of 5200 and you would have removability. If you only require sealant qualities in your application, then use the 3M Marine Sealant Fast Cure 4000UV.
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Old 09-14-2015, 09:33 PM   #4
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I used roofing polyurethane sealant.
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