What is this groove?

[OneAkela]

This groove runs the length of the garage back to front, in the center. it is V-shaped and about 3/4 inch deep. The house is under construction, so it is filled with untold crud. Any idea what this is and if I Epoxy-coat the floor, how do I handle this groove?

 

[dcs Inc]

Looks like a tooled crack control joint that wasn't properly opened up after power troweling the slab. A v shaped crack chaser would clean it up. If you are filling it with epoxy don't worry about reshaping it. If you look closely at the bottom of this joint it will be cracked. gene

 

[dejar59]

So how would be the easiest and best way to hide the crack to achieve a smooth surface? Will be applying supercoat. On top and want the smooth glassy showroon appearance. Ideas anyone

 

[dcs Inc]

Man, I can only give ya advise on my product line. There are a lot of hungry sellers on here and I'm not really here to fight with the crumbs. I don't even know what a "super" coat is. I sell super duper coat.... (thats a joke guys) I have a special on the super duper extreme but it just sole out....... ha, OK, I'll behave.

Here's my suggestions, If this is a heated area then clean all the **** out of it, try not to fill it up with water. I use denatured alcohol as my water. After clean go and purchase some of these guys "super" crack fill. ( If you want to make your own, it's easy)...and better. Anyway, if you want, shoot me an email and I can give you the correct way to prep and fill joints. [email protected]

Oh, by the way, the joint looks crooked but if you decide to keep it then a crack chase will straighten it out. gene, Elite Crete Indiana

 

[LegacyIndustrial]

Dejar, hit our site for some solutions.
Hd818 or hd821 will hide it and they are compatible with super coat.

 

[dcs Inc]

Go scotty....

 

[Edger]

Perhaps that crack is a join of one slab to another. I would cut the edges straight before filling it to stop the edges from crumbling.

 

[OneAkela]

Can this product be used to fill the groove and then Epoxy-coat or should I not bother and just fill it with Epoxy-coat when doing the floor?

DAP® 3.0™ Advanced Self-Leveling Concrete Sealant

I believe it is a silicone based sealant.

or this

DAP® Premium Polyurethane Concrete & Masonry Sealant

or this

Rust-Oleum EPOXYShield Concrete Patch & Repair

 

[munkey]

Can this product be used to fill the groove and then Epoxy-coat or should I not bother and just fill it with Epoxy-coat when doing the floor?

DAP® 3.0™ Advanced Self-Leveling Concrete Sealant

I believe it is a silicone based sealant.

or this

DAP® Premium Polyurethane Concrete & Masonry Sealant

or this

Rust-Oleum EPOXYShield Concrete Patch & Repair

Those first two products are going to be extremely risky; the filler needs to be strong and also chemically compatible with your topcoat or you will get chipping/soft spots/etc. along the joint.

The Epoxyshield patch and repair is a good product and will do the job (it is a 100% solids epoxy) but you might need a lot of it.

Completely filling the joint with Epoxy Coat might work but I doubt they advise such a use, and it is probably wasteful.

Go with one of Legacy's suggestions if you can afford it. If you fill it with an epoxy product, you're going to want to grind it down level afterwards or there is a significant probability that the crack will be visible after the job is complete.

Or just clean it out and brush some of your topcoat in the crack if you don't care about hiding it!