Anyone have POOR results...?

[jalr]

Has anyone had POOR results using the Rustoleum EpoxyShield "Industrial" product after proper prep? I need to cover 3500sqft in a working garage. Due to years of abuse I will be diamond-grinding the surface along with the normal degreasing/cleaning. Is an acid wash necessary after the grinding?

I need to get this done asap so any feedback is greatly appreciated.

 

[Luckydevil]

Even after grinding you are still going to need to etch the concrete with acid for the best results.

3500sqft? That is one hell of garage.

 

[trovato]

Due to years of abuse I will be diamond-grinding the surface along with the normal degreasing/cleaning.

Will you be doing the diamond grinding yourself? With what? I'm interested in learning more about that. Thanks.

 

[White Chocolate]

I know this isn't what you're asking, but I had GOOD results with the Industrial stuff. ARe you buying it in bulk or a bunch of the 1 gallon kits?

 

[krooser]

ALWAYS etch...

 

[jalr]

Thanks for the feedback all. To respond to some of the questions... When I say working garage I mean an auto repair shop. Out of the 3500sqft 500 will be office and waiting room so really I have about 3000 sqft to cover. I'm doing the grinding with a HEAVY duty 13" standing rotary floor sander with a metal grinding plateand diamond impregmanted blades. The thing weighs around 200lbs and is a beast to use - draws about 15 amps not counting surge at startup. I know because it was tripping the 20 amp circuit breaker when I hit the hard spots and was under heavy load. I tried a floor buffer with 40 grit sand paper but it wasn't cutting the mustard. The sander with the diamond grinding plate is doing well but you have to be careful or it will get away from you. If anyone is interested I'll get the make and model number off it tomorrow when I go back to the job. It rents for $135 a day, but I got a weekly rate of $550.

I also spoke with the Epoxy-Coat rep today and am leaning in that direction barring adverse feedback from anyone in the forum. I'll post pictures of the job in progress if anyone thinks they would benefit from seeing it...?

 

[bmwpower]

I would like to know. I'm getting ready to grind mine. I think I may have found a place that will rent me one, but I'd lke to compare. Thanks!

 

[GearHead_1]

I also spoke with the Epoxy-Coat rep today and am leaning in that direction barring adverse feedback from anyone in the forum.

I would point you in this same direction. I'm loving mine.

 

[trovato]

I'll post pictures of the job in progress if anyone thinks they would benefit from seeing it...?

So what kind of finish are you getting from this grinding process? And yes, of course we want pictures! You have to ask?

 

[abaran]

Thru some of the research I've done I've come across several warnings with regard to mechanical surface prep whether it's shot blasting or mechanical etching. Basically the warning read that these processes can actually polish the surface (the exact opposite of what you hope to achieve). When your talking to the tech rep, ask them if they recommend a specific grit or process to prevent this from happening.

Best of luck

Andy

 

[jalr]

Andy, can you point me to some of these warnings - I'd like to review them. The sander is leaving a smooth surface, which I may have to roughen up, based on what you mention.

Can anyone else speak to this point? I had to resort to the sander to get the old layers of paint off, but will acid etching leave enough of a "profile" after this or do I need to do something else - like what?

Pictures coming tomorrow as I was working on it until dark tonight...

 

[abaran]

The warning that came to mind is from Coronado Industrial Coatings, and it reads: " Certain scarifying units can actually polish concrete, rendering the area unsuitable for coating application. If this occurs, the concrete will need to be opended by acid etching or centrifugal shot blasting."

There is an additional warning regarding shot blasting but I don't think it applies. So, going back to your additional question, Yes, you should acid etch your floor prior to application even after you've mechanically prepared the floor. It may seem like and extra effort but I think it will be worth it in the long run.

Hope this helps.

Andy