Fresh Cured Concrete Prep for Epoxy?

[iliadz]

So if the garage is new, and the concrete is dry with no use, what type of prep would then be needed?
I see varying opinions such as power wash only. etc/

 

[Shea]

You need to acid etch at a minimum or grind. The age of the concrete (brand new slab or old) has no bearing on concrete prep. The prep is the most important part. It profiles the surface to provide the necessary porosity and surface texture for a strong mechanical bond.

 

[Armorpoxy]

Shea is correct, new concrete at the minimum should be etched to provide a proper adhesion profile. The secret to a good long lasting epoxy job is always the prep.

 

[Garage Flooring]

So if the garage is new, and the concrete is dry with no use, what type of prep would then be needed?
I see varying opinions such as power wash only. etc/

You need to acid etch at a minimum or grind. The age of the concrete (brand new slab or old) has no bearing on concrete prep. The prep is the most important part. It profiles the surface to provide the necessary porosity and surface texture for a strong mechanical bond.

Concrete prep is huge. New or old. To elaborate on what Shea is saying if you were installing a 70% solids Polyurea over new concrete you would be find with an etch.

If you were installing a 100% solids epoxy, especially without a primer (which we do not recommend) you really should grind. The other factors that may influence grind vs etch is what sealers or chemicals were used at time of pour and if you had say a layer of soft concrete on top