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Cold Expansion Joint
08-08-2011, 11:57 AM
Post: #2
RE: Cold Expansion Joint
Well... Not seeing it....

You can try and determine the amount of movement. If it is minimal, you can use a semi-rigid epoxy or 2 part urethane that is weaker than the concrete but stronger than necessary to support rolling loads (remember that Euco Qwikjoint 200 I mentioned?). MM80 is a good semi-rigid epoxy. If the joint moves more than maybe 50% it can fracture though... So a 1/4" joint can maybe move an 1/8" (winging it here with numbers!Big Grin ) which may affect your flooring anyway, rubber would probably be okay, but VCT will crack, vinyl... who knows?

Or honor it through! You can buy a pre-made joint which is a flexible material sandwiched between two metal sides that gets epoxied into the joint (you need to route out the joint to fit the expansion joint in). The joint then expands and squishes as the concrete moves. It is flush with the finished floor. You will probably have to epoxy the original joint closed and re-cut the new joint so it matches the layout of your floor, or you can install a slip sheet if the honored joint is pretty close to the existing joint.

JD Grafton
Concrete Answers for Flooring Problems
[email protected]
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Messages In This Thread
Cold Expansion Joint - eaadams - 08-08-2011, 11:12 AM
RE: Cold Expansion Joint - CC Solutions - 08-08-2011 11:57 AM
RE: Cold Expansion Joint - eaadams - 08-08-2011, 01:42 PM
RE: Cold Expansion Joint - CC Solutions - 08-08-2011, 02:15 PM
RE: Cold Expansion Joint - eaadams - 08-09-2011, 09:28 PM
RE: Cold Expansion Joint - CC Solutions - 08-09-2011, 09:34 PM
RE: Cold Expansion Joint - eaadams - 08-09-2011, 09:55 PM
RE: Cold Expansion Joint - CC Solutions - 08-09-2011, 10:02 PM
RE: Cold Expansion Joint - Ernesto - 08-14-2011, 08:23 PM
RE: Cold Expansion Joint - eaadams - 08-14-2011, 09:50 PM
RE: Cold Expansion Joint - CC Solutions - 08-15-2011, 04:04 AM
RE: Cold Expansion Joint - Ernesto - 08-16-2011, 08:11 PM
RE: Cold Expansion Joint - CC Solutions - 08-19-2011, 07:14 AM
RE: Cold Expansion Joint - eaadams - 10-21-2011, 06:53 PM
RE: Cold Expansion Joint - CC Solutions - 10-21-2011, 07:30 PM
RE: Cold Expansion Joint - eaadams - 10-21-2011, 07:49 PM
RE: Cold Expansion Joint - CC Solutions - 10-22-2011, 07:24 AM