Do I need acid etch if I fully ground the floor?

[Pcoghlan]

So I spent a WEEK grinding a 1000 sq/ft workshop and am about to start applying epoxy coat.

They supplied an acid etch which I assume is to produce a substrate good for adhesion...however, surely the concrete grinding did that?

If I fully ground the floor do i still need the acid etch?

 

[Armorpoxy]

Hi
No, if you grinded you don't need to etch, but since you grinded make sure you use a matching epoxy primer as grinding opens up the floor and the epoxy will tend to soak in and you could have an uneven finish if not primed. Use of primer will allow the nice thick epoxy to sit on the floor and will make the surface thicker.

Thanks!

 

[Pcoghlan]

Thanks a million.

I went with Epoxy Coat and they don't supply a primer. base and clear only.

This going to be an issue. They advised no primer needed...

Hi
No, if you grinded you don't need to etch, but since you grinded make sure you use a matching epoxy primer as grinding opens up the floor and the epoxy will tend to soak in and you could have an uneven finish if not primed. Use of primer will allow the nice thick epoxy to sit on the floor and will make the surface thicker.

Thanks!

 

[Armorpoxy]

We carry a compatible primer for that product. $159.00

There's tons of strings about the issues when not using a primer and it's strongly commended on a grinded floor. We would never sell a garage system knowingly on a grinded floor without recommending primer.



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[bdamico]

get a primer. it is a great way to extend the product you have and get a much better result

 

[Toomanytools?]

We carry a compatible primer for that product. $159.00

There's tons of strings about the issues when not using a primer and it's strongly commended on a grinded floor. We Wookiee never sell a garage system knowingly on a grinded floor without recommending primer.



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I'm sorry but that's just funny, auto correct.

 

[JStar4]

Yes you def wanna use a primer. I pour mine at 400 sqft per gallon! If you grind well your good to go. Just remember to clean the floor very well before putting down epoxy. I vacuum twice then mop twice with denatured alcohol to make sure its clean.

 

[Pcoghlan]

Many thanks guys. Appreciate the feedback.

 

[LegacyIndustrial]

Thanks a million.



I went with Epoxy Coat and they don't supply a primer. base and clear only.



This going to be an issue. They advised no primer needed...

Primer it.
http://www.legacyindustrial.net/products/primer-coatings/standard-epoxy-primer-coating.html

Priced right!!


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[Armorpoxy]

Here is the link the ot he primer. 25% off use code GGJ2017

https://armorpoxy.com/products/armorultra-primer-2-gal-kit/

 

[Pcoghlan]

Finished. Happy with the final outcome but the Epoxy Coat barely covered 910 sq/ft despite their insistence it was good for 1000. In all honesty I owuldn't have minded having another 50% of the clear to ensure a mirror like finish. I might go at it again in the future, sanding the clear and adding more to it.

Now to wait a week or three for it to dry. I have used Epoxy Coat 3 times now and it always takes a long time to properly dry/cure. It is now down 5 days and I can still make a decent impression with a finger nail. The last time it took 2 weeks before I was not able to do so.

 

[JStar4]

Why so long to cure? I can walk on epoxy in 12 hours

 

[Pcoghlan]

Why so long to cure? I can walk on epoxy in 12 hours

Epoxy Coat states you can walk on it in 18 hours and vehicular traffic in 3 days but from experience that is not the case. This was laid last Sunday and I can still make an impression with a finger nail. There are numerous results if you search for expoxy coat drying time in G.

It is a good product but SLOW to cure.

 

[LegacyIndustrial]

Finished. Happy with the final outcome but the Epoxy Coat barely covered 910 sq/ft despite their insistence it was good for 1000. In all honesty I owuldn't have minded having another 50% of the clear to ensure a mirror like finish. I might go at it again in the future, sanding the clear and adding more to it.

Now to wait a week or three for it to dry. I have used Epoxy Coat 3 times now and it always takes a long time to properly dry/cure. It is now down 5 days and I can still make a decent impression with a finger nail. The last time it took 2 weeks before I was not able to do so.

That is a problem and should not be. It's a mixing problem or a coating problem.

 

[Pcoghlan]

That is a problem and should not be. It's a mixing problem or a coating problem.

I don't disagree but I have seen a lot of people have the same results with Epoxy Coat. Slow to cure.

I mixed it for almost 5 minutes to try to prevent the issue but got the same result.

 

[Armorpoxy]

This is unusual and perhaps something with this brand. Sellers of 100% solids epoxy on the Forum brands the epoxy should harden up overnight.

 

[JStar4]

Yep 12 hours im walking on the epoxy. Never had a prob with it.