I am filling my control joints before my polyurea coating and have a question. I have already filled the joints with a 100% epoxy joint filler however the joints are still visible. Now that the joint filler is completely cured is it ok to add another layer of joint filler on top in order to smooth out the voids a little better?
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Joint filler question
- Thread starter S0schaef
- Start date
LegacyIndustrial
ALLIANCE MEMBER
Yes, but make sure the previous filler is at least sanded and then wiped clean so the two can bond, mechanically.
David Stanley
Member
Yes, but make sure the previous filler is at least sanded and then wiped clean so the two can bond, mechanically.
Agree.
Garage Flooring
ALLIANCE MEMBER
I am filling my control joints before my polyurea coating and have a question. I have already filled the joints with a 100% epoxy joint filler however the joints are still visible. Now that the joint filler is completely cured is it ok to add another layer of joint filler on top in order to smooth out the voids a little better?
Yes, but make sure the previous filler is at least sanded and then wiped clean so the two can bond, mechanically.
Yes sand it first like Scotty said and do not use any water. Clean dust with solvent.
Shea
Well-known member
Most of the vendors sell the appropriate materials to fill the joints. The key to successful joint filling is to make sure they are complete full (no depressions) and then grind the joints afterwards to create a nice flush surface. When that is done, it's very difficult to tell you had joints in the concrete to begin with.
Thank you Shea - so, the process would be:
1. Grind entire floor with floor grinder.
2. Fill expansion joints & ensure they are completely filled to level of the rest of the floor.
3. Hand grind top surface to ensure nice flush surface.
Is that correct? (I'm doing mine soon...)
1. Grind entire floor with floor grinder.
2. Fill expansion joints & ensure they are completely filled to level of the rest of the floor.
3. Hand grind top surface to ensure nice flush surface.
Is that correct? (I'm doing mine soon...)
Shea
Well-known member
Yes, you have the process correct. I would actually fill and grind first and then grind the entire floor as it will provide the same surface profile throughout the entire slab, but the order is not that big of a deal.