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Epoxy or Densifier

SH_82

Member
Joined
Jun 2, 2020
Messages
9
Location
Midwest
I have a ~50 year old 600 sq. ft. garage I am renovating and leaving the floor for my final project.

The slab isn't in terrible shape but has some long cracks, divots, and spalling.

I have found a local company willing to perform the diamond grinding and patch repair for around $1/ft. Figured this was best to pay out since it'd cost me half that to rent the grinder alone.

This is a property I only plan to live in for 4-5 years. I'm looking for a good product that will be easy to clean and still be in pristine condition after 5 years. No 'heavy duty' work will be done in the garage. Cars will be parked there and normal household renovation projects will be worked on in the garage.

My numerous hours of research led me to these 3 epoxy/polyurea-based products that are currently in the running.
  • Wolverine Epoxy coating system
  • Legacy Industrial Nohr-S
  • Sherwin Williams Armorseal 8100 (recommended 3 coats + polyurethane topcoat)

Just recently I came across sealers/densifiers as a cheaper alternative to epoxy floors that may be better suited for surfaces that won't get a ton of wear-and-tear.

Sealers/Densifier solutions researched:
Euco Diamond Hard
H&C Colortop

My two primary questions for the community here are:
1. Can an old floor be rehabbed with a diamond grinder and patch work well enough to where a sealer/densifier will actually look good? Or are these typically only used for new slabs?
2. Will I be happier spending the extra money to go with an epoxy/polyurea system instead?
 
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SolarColumbia

Well-known member
Joined
May 7, 2019
Messages
211
Location
Wisconsin
If you need to repair cracks and spalling you should do that first. If you're going to put down epoxy you would make the repairs with a two component system, either epoxy or polyurea and then grind.

If you are going to densify you can use cementitious products for repair but the two component products would be better. Densifier will not penetrate or hide the repairs. Also once you've had the floor machine ground it will be rougher and a densifier won't smooth it over. If you wanted it to be easier to clean and if it's in good shape you could make repairs, skip the grinding, and use densifier.
 
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