Garage Floor Coating Recommendation for Upper Garage

[JasontheMason19]

We have an upper & lower garage with precast slabs in between. We have been having issues in the winter where water is leaking down into the lower garage from the upper garage due to snow from the cars. Originally we were going to have a company come in and put a coating on the upstairs garage but at around $6/sq ft for a 670 sq ft garage, this is more than we want to pay. We’ve been reading posts on this forum but there are so many different options available we are unsure of what to choose for our situation. We were looking at using SPGX ONE PART POLYUREA COATING but would this be something to use just for the top coat or would it suffice as the only coat we need? Any advice or recommendations for something that would prevent water penetration through to the basement garage would be greatly appreciated.

 

[Kaizen]

I doubt this will be the only thing needed. I’m having a problem visualizing this garage. Any pics? I doubt the water is going through the slab. Is it leaking at joints or edges?


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[JasontheMason19]

Yeah the leaking is mainly along the edges & we planned on adding something along the edges to help with that (any suggestions?) We will also add caulk to the seams after the floor is coated. Here’s a picture of the upper garage floor & ceiling of basement garage

 

[ConCretin]

I would suggest a traffic bearing waterproofing. It's most often used in parking garages. The manufacturer should provide details for sealing the perimeter. I'm not sure it will fit your budget but the alternative is not pretty. If you don't get a handle on the water intrusion, especially if you live in an area that uses salt in the winter, repairs will get expensive quickly.

 

[Kaizen]

That’s tough. Problem is those slabs will move to whatever you use has to be flexible. Think I would use an expansion joint filler. Hd has one in the concrete section called silkaflex. Go get it while it’s still warm so it can flow and level out. Might have to make a few passes. I’d just do that and then flood it with a hose and see where it leaks or if it solves much of it. Still don’t know if this is a long term solution in a setup like that. Epoxy is not flexible so that is not going to do it in its own. And I’d hate to put Emily down and have the problem still happen next year.
Is the top slab pitched to the door?


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[LegacyIndustrial]

We offer a traffic system.
As the guys mentioned it's pricey.

 

[Armorpoxy]

Hi
We offer traffic deck systems but they are multi layer broadcast type and generally not used in residences due to prep work needed and cost/sq ft.

But..the solution we have been recommending for years are our Armorcover Ribbed Mats. They roll out and the ribs entrain the water and we have had 100% success with them in stopping water from going through the slab.

SPGX or any epoxy coating is not the right solution as these coatings are not flexible and when the slab moves or develops a new crack it will just leak again.