concrete slab

[fleeders]

Hi Guys, I am on the forum from at least 2 year searching and getting some great idea out of here but this is the first time I do a thread here.

Right now I am restoring/convert an old hangar/barn to make a garage but I have some concern about my concrete slab that I have pour last year.

When I pour my 26x26 slab the troweling machine that I have rent broke when I need it (I lost a blade on it, rivet was so worn) so the time I went to the rental store and back (25 min) it was already too late....my dad have done a good part of it by hand but there is like 70% of it with defect and not smooth.At first I was like ''just too bad I will live with it'' but more I look on the forum I saw some great result of people doing epoxy floor here and would like to do so but I would like to have some of your advice to know if there is something to do??? There is some picture of the defect I spoke about :

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-I saw there is some Polymer-modified cement or self leveling ciment I can put on it but will it do the job and will it last??
-will only grind the slab with 7 inch diamond blade would get it back to smooth it enough before epoxy coat??

I am hopping doing this next year before putting workbench and Tools so I start looking for option (if there are) or I will have to live with it

Thanks

 

[LegacyIndustrial]

I would use a good epoxy patch for the heavily damaged/pitted areas. Grind the entire floor post repair. Apply a good 100% solids flexible epoxy primer, can be squeegeed on and back-rolled allowing it to fill small voids. Pick a good 100% solids base coat and at least a partial flake to help disguise the undulation. Could be nice and not as bad as you think.

I linked a post we did many moons ago in the NorthEast. It was a terrbile floor that we brought back to life. Much worse than yours. We used a true "Self-Leveling" coating, not just 100% solids for this floor.

http://blog.legacyindustrial.net/2012/10/smoothing-garage-floor-legacy-industrial.html


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[Armorpoxy]

Grind down the high spots to make the floor as level as possible, don't worry about the low spots yet.

We suggest priming with our Armorclad primer to stop absorption. Then mix up some if the ARMORCLAD 100% solids epoxy and pull it tight against the floor with the included flat blade blade squeegee. The epoxy will to a great extent stay in the low spots and harden at that level. Then re-apply the epoxy per normal procedures and fleck if desired (suggested as will visually break up the distorted floor). Then clear coat with non skid. It won't be perfect, but will be greatly improved!

We're not big fans of patching especially since as you feather the edges those areas are prone to failure as it's just not enough material when thin to hold up.

 

[fred d]

What about renting a concrete grinder from the local rental facility or HD
Probably cost $100-$200 to smooth the whole thing (depending on size)

 

[LegacyIndustrial]

That little gem is great for profiling a floor in preparation for coatings. Chewing away at high-spots may take a planer or scarifier.

 

[fleeders]

Thanks guys for the fast replies I really appreciate and it give me some hope for my floor

just to clearify I only have one high spot almost all the suface is flat but there is those hole left by the lack of polishing

If I understand Armorpoxy after grinding I can only put a epoxy coat to fix the hole and level the floor then after apply a second coat (like normal) with flake and clear.

and LegacyIndustrial if I fill the hole will you suggest an epoxy filler with sand or the liquid one that you mix 2 parts

Thanks

 

[Armorpoxy]

Hi
You can add some sand to the 100% solids epoxy when squeegeeing it to fill the 'low' spots, that will also help.

 

[Garage Flooring]

Two great solutions provided. Photos are not always the best in terms of scale, but I would tend to agree wit the solution suggested by Armorpoxy. Grind it and see what you are left with. If it is relatively minor, you should be able to deal with it using primer and epoxy, perhaps some sand, depending on severity.

 

[LegacyIndustrial]

Thanks guys for the fast replies I really appreciate and it give me some hope for my floor

just to clearify I only have one high spot almost all the suface is flat but there is those hole left by the lack of polishing

If I understand Armorpoxy after grinding I can only put a epoxy coat to fix the hole and level the floor then after apply a second coat (like normal) with flake and clear.

and LegacyIndustrial if I fill the hole will you suggest an epoxy filler with sand or the liquid one that you mix 2 parts

Thanks

Yes sir. Pre-fill those holes before your grind begins. Will make them disappear.
Grinding and then filling will make double work for you. I know this because we do this plenty and time management is important!

 

[fleeders]

Thanks guys!!
and what kind of cost can I anticipate to do an epoxy floor myself. 26x26 garage (676 ftsq) for primer + époxy + flake + clear/anti slip....(I know + repair kit) to give me an idea how much I have to save for next summer by the way is there anyone who ship to Canada or have a store in Canada?
Thanks

 

[Armorpoxy]

Hi for a good system you could expect to pay around $1.00/sq ft or a bit less. We ship to Canada daily. No duty/comes with Nafta certificate.

 

[LegacyIndustrial]

UPS will hand you a nice fee when its delivered. Have it shipped to the border and use a service if possible.


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[Armorpoxy]

Exactly, some small shippers have that problem. We have an international master shipping account where there is only a nominal fee and the client pays only the Canadian Sales tax which is due plus the small handling fee. We ship to Canada daily and have no issues with high fees nor customer complaints about shipping fees to Canada.

 

[Garage Flooring]

Exactly, some small shippers have that problem. We have an international master shipping account where there is only a nominal fee and the client pays only the Canadian Sales tax which is due plus the small handling fee. We ship to Canada daily and have no issues with high fees nor customer complaints about shipping fees to Canada.

We have started doing the same thing. Our freight quotes can now include GST, PST, Brokerage etc and FedEx etc all handles the rest. Makes life much easier for our friends to the north

 

[fleeders]

Thanks all for replies!!
I will have to think about that during the winter to decide witch way I will go but I am very happy that I can do something to my floor!!

Armorpoxy I saw on another post that you offer 40% discount to GJ members, is it all year long or just for a limited time?

 

[Armorpoxy]

We don't anticipate ending the discount any time in the near future.

 

[fleeders]

Great

I forgot to ask if I do some welding/cutting, playing around with car jack ....is epoxy better than polyurea?

 

[Armorpoxy]

We have found that both products perform similarly. Welding slag will mark or burn anyone's coating. Sparked and general usage should be fine.