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Whats the best primer for epoxy?

hardhat

Well-known member
Joined
Oct 24, 2009
Messages
107
I know there is pre-prime 167 but I see some recommend a water based primer. I plan on using Epoxy-Coat or one of Legacy's epoxies which I know you don't have to use a primer but I think its added insurance. My floor is 6 months old and I will be acid etching it fyi. Its very clean with no oil stains and no moisture problems.
 
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Edger

Well-known member
Joined
May 18, 2011
Messages
623
Location
Melbourne Australia
Hi,
I am new to these forums, but I have some expertise to share. I used to be an industrial epoxy floor contractor and I found that primers were not usually needed. What is needed is good preparation. You can visit my webpage http://www.situp.com.au/How to clean concrete before sealing.html where I have tried to make preparation simple.
Primers used to be used only for self-levelling epoxy because there was only one coat and you need to seal off the porous concrete. For normal epoxy topcoats we just thinned the first coat. If the adhesion was good we never had peeling or chipping for the life of the floor and that was with forklifts running over them every 5 minutes for many years. You should be very mindful of the maximum times between coats, if that is 8 hrs then recoat within that period as long as the floor is not sticky.
Cheers.
 
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LegacyIndustrial

ALLIANCE MEMBER
Joined
Jun 7, 2010
Messages
7,995
Location
deerfield, IL
The thinner products require a primer as they have little build and show inconsistencies easier. If you prep properly, as the last gent mentioned, and use a high solids epoxy coating, you will be just fine.
 
Joined
May 20, 2011
Messages
4
Location
Fullerton, CA
Check out our 4195 Wicking Epoxy. It serves as an Epoxy - Primer, and wicks deep into the concrete.

This product can withstand up to 8bs of MVE (Moisture Vapor Emission) unlike off the shelf kits you can buy at home depot which are rated for around 3lbs.

Also comes with a lifetime warranty.

4195 Direct to Concrete Epoxy Primer

For serious MVE issues, you can use our Vapor Stop 4150 - rated to 16lbs.

4150 Vapor Stop Epoxy Primer Sealer
:)
 

LegacyIndustrial

ALLIANCE MEMBER
Joined
Jun 7, 2010
Messages
7,995
Location
deerfield, IL
Repeated hydraulic pressure will take the coating off with the concrete still attached.
Best to test before coating and avoid issues all together.
 
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