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Old 06-28-2008, 09:20 PM   #1
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concrete expansion joint sealer


My old school fiber concrete expansion joints have dried up and withered away and I want to fill it with that flexible caulking. I have already bought the foam backer rod and stuffed it into the crack after removing the debris but I'm having trouble locating the stuff. It really gets me too because I was just at Target and seen it used just outside their door.

Any of you folks know what I'm looking for?

This site is very cool, many smart people

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Old 06-28-2008, 09:30 PM   #2
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concrete expansion joint sealer


You are looking for either a Sika Flex caulk or a BASF NP1 style caulk. They are Polyurethane caulking. Try a motar/brick/stone supply house.

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Old 06-28-2008, 09:41 PM   #3
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concrete expansion joint sealer


Thank you. This site has been one of the best discoveries I've had.
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Old 06-29-2008, 07:01 AM   #4
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concrete expansion joint sealer


we like polysulfide as its gas/diesel resistant,,, 100% silicone works well, too,,, have done miles of highways w/it.
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Old 07-20-2010, 07:23 PM   #5
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concrete expansion joint sealer


I've found that Dow Corning has a good pavement sealant for expansion joints. It's good for handling weather extremes and I found it really easy to install. http://www.dowcorning.com/content/co...tion/conspave/
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Old 07-21-2010, 09:09 AM   #6
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concrete expansion joint sealer


dow's product's good however won't resist gas/petroleum,,, normally its only used on runways & highways.
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Old 07-27-2010, 03:13 PM   #7
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concrete expansion joint sealer


There's a new method available that will be a whole lot less work than the polyU caulk. Works for residential-type applications with rounded edge slabs and 3/4" joints.
www.trim-a-slab.com
these guys are new, and you can't get it too easily just yet, but it looks sweet.

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