Epoxy over epoxy?

[fiveoh]

I acid etched and expoxied my garage floor 4-5 years ago. It hasn't peeled or come up BUT I should have used 2-3 coats, there are a few spots that didn't get "filled" in as well and aren't as smooth as the rest. Can I clean it and go over it with another coat now or would I have to remove the whole thing and start fresh?

 

[dandan111]

You can recoat. I would contact manufacture and ask the best method to prep.

 

[LegacyIndustrial]

Agree with DanDan. However, in most cases you can degrease, degloss, solvent wipe and recoat.

Fix any issues with the floor prior to coating as they will telegraph through.

 

[dtinsman75]

I just did this over the weekend. I had a 5 year old 2 part epoxy, no peeling issues or anything like that. I just wanted a fresh coat and a new color. I contacted the manufacturer, they suggested cleaning with TSP, lightly sanding with 80 grit sandpaper to rough up, and then doing a duct tape test. My floor passed this test, I gave it one last cleaning with TSP and rolled the new on once it dried. It seemed to adhere really well and seems solid. I am going to give it a week before I pull a car onto it because its been humid where I am in SC and want to make sure it has all the time it needs to cure. As always, the prep is 90% of this job...Good Luck!

 

[Edger]

I have been selling the Diamabrush 100 grit wheels for swing buffers to epoxy contractors for cutting back the first coat of epoxy before applying the second. They move quickly, but the finish is great. My experience is that sandpaper is not strong enough to scratch a good epoxy that has fully cured. Just another opinion.

 

[fun2drive]

Epoxy Lifting in some Spots

I have the Griott's Garage epoxy applied over my garage floor. I used some cheap floor cover before that, sanded it off and used acid etch then propertly applied the Griott's product correctly.
I have some lifting where the tires sit only on one side of my two car garage. I want to coat it again with a product that will last.

So here is the question. Sand the Griotts off and start again or sand to roughen the Griott's epoxy up to take new epoxy? If I either I have read about many epoxy here anyone have a strong recommendation?

Garage floor has never had spills or anything like that on it in the 30 years since I built it. This garage is attached and in Ohio.

I used the same product in my garage floor in Florida and it never lifted anyplace and is excellent. Same thing older garage floor with no spills just worked very well.

If I sand this off a rental store using the big circular sanders do the trick? 80 grit or ?? what grit is best.

Thanks you guys are the experts. Once I get this done then I will address my poor lighting issue in the garage...

 

[LegacyIndustrial]

Grind yourself back to concrete. Start fresh with a primer, basecoat and optional clearcoat. Use real epoxy and stay away from the paints or single part epoxies.

Rent an Edco single head grinder or try Home Depot Rentals for a diamabrush concrete prep tool rental.

Trying to build upon a weak foundation.... well you know the rest of the story.

 

[fun2drive]

Thanks. Looks like I will be sanding all the Griott's off.

 

[iibgdi]

I didn't like my initial epoxy coat and chip distribution so I called the manufacturer and they suggested that I use 60 grit sand paper and go over it. (just basically roughed it up)

Then I vacuumed, swiffered and wet moppped to get the dust up. Put the second coat on and it turned out great.

I still have to do the other half of my garage and intend to put 2 coats on as well. However, this time, I won't have to sand since I'll do it within a day or 2 instead of a week later.

I used the professional kit from rustoleum. not the cheap stuff

 

[tncatadjuster]

Grind yourself back to concrete. Start fresh with a primer, basecoat and optional clearcoat. Use real epoxy and stay away from the paints or single part epoxies.

Rent an Edco single head grinder or try Home Depot Rentals for a diamabrush concrete prep tool rental.

Trying to build upon a weak foundation.... well you know the rest of the story.

What made you change your mind? A PM?

I've recoated with success when following your first post.

 

[LegacyIndustrial]

Sorry, responding to fun2drive, He mentioned hot tire lift and his product sounds more like a paint.

A good Epoxy that is down tight is an excellent base for a recoat and I too have made many recoats over an older epoxy base. Fast in and out!!