New concrete floor coating advice needed.

[M59]

Thanks for that info M59.
The floor was replaced because the original was cracked & not level side to side. There was a 5 inch elevation difference across the width of the doors. We ordered a new 17’ door which required the floor to be level. This is only used for parking in the winter so I’m primarily interested in products that will prevent salt damage.
Industrial coatings are out of my price range so I’m looking at pour on/spray-on treatments to seal the new concrete before winter.
Thank you
90cummins

90cummins,

Got it, cost is critical, then regardless of what coating you choose, prep that floor so you can bind what ever coating you choose otherwise the coating will soon peel off. Mechanical prep is best, acid prep isn't aggressive enough. Floor prep is far more important than coating choice to a long satisfactory life for coated floor.

 

[GSVette]

I debated epoxy vs acrylic when my shop floor was poured. After much consideration ( and discussion with the flatwork contractor)I decided to use Dayton J 25 sealant.

If would be considered ‘less durable’ than a properly applied (key word here is ‘properly’) quality epoxy. In my opinion ‘less durable’ is debatable- yes, J25 ( and other similar coating chemistries) are susceptible to certain fluids ( hydraulic fluid being one that can damage the coating if allowed to remain in contact for some period).

The keys for me were: (a) susceptibility of finish to poor adhesion due to surface preparation variability, (b) ease of application and reappplication, (c) durability, (d) cost.

Thus far (4 years)- coating has been outstanding. I do protect the floor when potential for long term nasty ( oil/hydraulic fluid) exposure is possible (like when I park my leaky as hell Case 580 in the shop for any real amount of time). I’m due to reapply probably this year.

 

[90cummins]

Holly molly that's some bad settling, is the building sitting in a swamp?

It was like that 30 years ago when we purchased it.
Area is not wetlands so I have no idea why.
After we removed all the old concrete we could see no reason for the concrete to heave. The fill was clean sand nothing hidden in the depths. Perhaps water entered before the floor was protected from the elements.
90cummins