Garage floor divots

[Scurvydog]

Hello Forum,

I recently purchased a home with a garage that has a coated garage floor. That's the good news. There are perhaps a half dozen marks in the floor were it looks like the concrete failed/popped loose.

My first question does anyone know what type of coating was used on the floor by the picture?

Second what are some good steps to repair the concrete divet and than the coating?

Appreciate any help on getting onto the road to repair!

 

[ConCretin]

You didn't say where you are from but I suspect you are in an area where lignite is prevalent. Lignite is a coal like material that makes its way into in the sand used to produce concrete in some parts of the country. The problem with lignite is that it expands and creates pop outs like you are experiencing.

I'd go back to the ready mix provider and see what they are willing to do. Although there are specs that limit the acceptable amount of lignite, it doesn't take much to create a problem. To some degree, it's outside their control but they should still stand behind their product. I'll leave the repair process to others more knowledgeable than I am.

 

[Scurvydog]

Located out in the lovely Pacific Northwest. The concrete slab has been in seven years not sure how long ago when the previous owner did the coat. No option to go back to the original contractor.

 

[Scurvydog]

Anyone have any idea on what the floor coating was used?

Second advice on patching small divers (less than 1/2 deep) in the concrete?

 

[Wangstang]

Get a Rustolum pro grade epoxy kit, solvent base, mix enough to fill the holes just enough that it's slightly higher than your current floor

Start by cleaning the area around the hole with a degreaser, then water. Lightly scuff the area around the hole with a clean stainless steel wire brush and clean again. Let it dry for atleast a day but longer is better. Now mix your batch of paint. Go to your smallest holes and work to the largest, filling each hole just above the current floor level. As you fill each hole, tap around the area of the hole with a rubber mallet to release any air bubbles, top off as needed and tap again until no more bubbles come out. Level the spot with a small roller, toss a few loose coloring chips on top from waist height and at about 3' away of the fresh epoxy and move on to the next hole.

If you have a few friends who can help, that would be best as the solvent stuff can set up pretty fast.

Wes

 

[LegacyIndustrial]

I would grind the entire thing and start from scratch.
You may have more yet to surface and then what a wasted effort.

 

[Wangstang]

I would grind the entire thing and start from scratch.
You may have more yet to surface and then what a wasted effort.

A true grind and refinish will set you backby quite a bit of cash and or labor but it would be the best solution.

For six spots the size of quarter...I might gamble on the easy route.

Wes

 

[Scurvydog]

Thanks for the recommendations! As much as I would like to do the whole floor over given it's the equivalent space of a four car garage I shudder at the cost Hey the floor still looks nicer than my old garage.

 

[pauls340]

Mg-Krete Fine would be a permanent repair for those pops or spall's. We switched over to using Mg-Krete because one product can be used in any temp and as long as you get your concrete clean and dry you can repair any depth and skim(taper) to zero. You can then epoxy or paint anything over it.