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Epoxy-Coat Application--Lessons Learned

steve392

Well-known member
Joined
Mar 21, 2006
Messages
51
Location
New Jersey
I just put down Epoxy-Coat in my shop last week and wanted to let everyone know my experience with the product.
First off, this is the product from www.epoxy-coat.com, just so there is no mis-understanding what product I'm referring to.
I learned about Epoxy Coat thru this board, and decided to go with it for my shop. I have a 24' x 32' shop with concrete floor that is one year old.
After talking to salesperson on phone, I ordered two kits.
Before I get into specifics, I would recommend this product highly, you just need to know about a few "quirks" in using this, or any epoxy product.

Kits:
The kits were ordered on a Friday, and the following Tuesday I had two 6-gal buckets filled with all of the necessary stuff. Everything arrived in good shape with nothing missing. Parts included 2 gal's of "Part A" paint, 1 gal of "Part B" epoxy hardener, 1 qt. Muriatic Acid for etching, mixing paddle for electric drill, gloves, instructions, cut-in brush, color flakes, and anti-slip grit, and "squeegee".
I've read other comments regarding quality of mixer and squeegee, but the mixer worked fine for me on my drill, seemed to mix real well and didn't break. The squeegee was meant to be put on the end of a pole somehow (a couple of zip-ties were included, but that didn't work. In practice, I used the squeegee with my hand like a trowel and everything went well.
Kit contents and quality were OK, no complaints.

Acid Etching
This was probably the biggest problem that I encountered with the kit. The etch solution was not nearly enough to do the job. The 1 quart that was supplied was supposed to do 500 sq. ft. No way. I went by directions and mixed the acid with 4 quarts warm water and applied with a garden sprinkilig can. I had barely enough to cover and adequately wet the floor. Ended up going out to local hardware store and purchasing another gallon of acid. The store stuff worked a lot better. It seemed stronger that the acid supplied with the kit. Another important step was to neutralize the acid where it sat before rinsing off. This is mentioned in the instructions and I think was the right way to go. I sprinkled baking soda (get lots of it!) over the acid after it stopped working, then brushed it around before rinsing. Neautralized the acid on the spot, and I didn't have to worry about acid getting on driveway, shrubs, or into drains. Other than that, etching worked out well, and has been covered before on this board.

Mixing/Applying
Each kit is supposed to do 500 sq. ft. and it seems to hold up to that claim. I had just over 750 sq. ft. to do, but I decided to put it on thick and use all of the product to cover the floor. I had a total of 24 quarts of epoxy to use, and being that the shop floor is divided into 4 parts by the saw cuts, I decided to use 6 quarts of mixed epoxy for each section. I first combined the "Part A" containers together and mixed well to ensure a constant color throughout the application. I used some plastic mixing pails and marked the sides in 1 qt. increments. I went by the instructions and mixed up only 3 quarts at a time. At first, this seemed to be a small amount, but actually worked out well. It gave me enough time to apply, roll out and fleck each area without being rushed, thinking that the stuff was going to set-up in the pail.
Again, following directions, I poured out the epoxy directly onto the floor, used the squeegee to spread it around, and used the roller only to even out the surface. After a while, I developed quite a knack for using the squeegee, and was able to move and trowel out the epoxy to an even thickness. After I troweled out the epoxy, my wife used the roller and evened out the area. While she was doing that, I was busy mixing another batch of epoxy. This assembly-line procedure worked out well, and we were able to do the whole floor, start to finish in 3 hours.
The one thing that I did not do as often as I should have, was to keep mixing up the "Part A" paint between each section of floor I did. I have a section or two of finished floor where I can see a slight shade difference in the color. I can only attribute this to the "Part A" starting to settle-out between mixes. It would have been better to re-mix the paint for each batch before adding the "Part B". Its barely noticeable, but I know its there. I ended up using all 6 gallons for the floor, and have a heavy coat. This probably would do the 1000 sq. ft as advertised.

Flecks
What can I say? Go for it! I ended up putting on the flecks after each 3 qt. section of epoxy I put down. It worked well for me to take very small amounts into my hand (this stuff goes far) and throwing it as high up in the air, hitting the ceiling sometimes, and letting it fall to the floor. Its just one of those things you need to try and come up with your own system. There were plenty of flakes supplied in the kit to do the job. They stuck real well, and leveled out with the paint.

Anti-Slip
I didn't use it. I wanted the ease of cleaning with a mop and besides, the flecks give a surprising amount of "roughness" anyway.

Curing/Cleanup

Cleanup was easy. I just threw everything away. The brushes are disposable as well as the roller covers. I did have a little of the paint and hardener left over, so I kept them in the original containers. If I need to do any touch up, I guess I could still mix up another small batch. I let the epoxy cure for 3 days before I walked on it and a full week before I moved everything back into the shop. The only thing I noticed was that there seemed to be a "film" on top of the cured epoxy that was still quite sticky even after a week. I washed down the floor with some diluted simple green, and that seemed to work. The floor is good to go, and I'm quite satisfied with the overall project.

Summary
1. Read the instructions and follow them. They work.
2. Get more acid for etching. Not enough supplied in kit to do a good job.
3. Neutralize acid with baking soda before rinsing off.
4. Pre-mix all of the "Part A" paint before starting, and mix again prior to making each batch.
5. Thoroughly mix hardener/ paint before application.
6. Change roller covers often if epoxy seems to be "setting-up" on roller.
7. Read the instructions and follow them. They work.
8. Do only small sections. This will give you plenty of time to squeege, roll out, and fleck.
9. Try not to overlap new epoxy section too much over previously applied section. Yes, you want to work to a wet edge just like in every kind of paint application, but if you overlap too much, the epoxy will be a lot thicker in that area, and it will be noticeable later on.
10. Give plenty of time to cure and use a mild cleaner if floor feels sticky after curing.
11. Read the instructions and follow them. They work.

Thats about it. I know this was an extremely long post, but I hope it was helpful to anyone wanting to use this product. Good luck with your painting!

I've attached a picture of the finished job.

Steve
 

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raymon1717

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Sep 15, 2006
Messages
17
My kit arrived missing the squegee and Part A had spilled into the 6 gallon bucket. Didn't matter much however, since A doesn't harden until it touches B. Bought a new squegee and did the job in about 1.5 hours (after probably 10 hours of prep work (cleaning and etching) over 2 weekends). Stuff came out great...like glass.

I ran short on Fleck, so there is uneven coverage.
 

DynoDave

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Joined
Mar 25, 2005
Messages
1,685
Location
Michigan
Great summary steve392. Thanks. Two questions for you....

Did all of the flecks land perfectly flat with the floor? I was just wondering if any ever ended up partially in the air / not fully stuck down.

When you overlap the edge of a previous section, having already put flecks on the previous section, do some of those flecks end up partially painted over?
 

snorvet

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Joined
Oct 29, 2005
Messages
777
Location
Northern Illinois
great summary! - glad to see you had better luck with your mixer than I did. But your acid experience was about the same as mine.

You're really going to like the floor when you can sit or lay on it while working on something. But watch out - its very slippery when wet.
 
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steve392

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Joined
Mar 21, 2006
Messages
51
Location
New Jersey
Glad to hear that this post was useful....Thanks to all who replied.

Dave,

The flecks laid down flat, and more or less laid level with the paint. I didn't find any places where they landed on-edge and stayed there.
I tried to keep from throwing flecks on the paint all of the way to the edge...after I painted the next section, I threw the flecks on the "seam". This worked well. Occasionally the roller caught up some flecks that were already down,but those were covered up by the fresh paint and didn't cause any problems.

Hope this helps,

Steve
 

Johns57

Active member
Joined
Aug 19, 2005
Messages
28
Location
Littlestown, PA
Thanks Steve, very helpful. I'll be putting the epoxy on 2000 sq. ft. this Sat. and I have my fingers crossed. One question, did you have any cracks in the floor and did the Epoxy fill the small ones? I spent 6 hours filling every tiny crack so they wouldn't show.
 
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steve392

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Joined
Mar 21, 2006
Messages
51
Location
New Jersey
...57,
No, I didn't really have any cracks in the floor to speak of. The floor is new, and the only place I have cracks is at the end of each saw cut near the wall. These are about an inch long, and the epoxy did not completely cover over the crack...I suppose if I put it on real thick at this point it would have covered...I didn't caulk or fill in the saw cuts either...just squeegee'd in a thick amount of epoxy into each cut and let it settle. The saw cuts are still as before, but the bottom and sides of each cut are epoxy coated...
Good luck with your project!

Steve
 

index

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Joined
Oct 5, 2006
Messages
49
steve, great post!
so with this product, you don't need to use a clear-coat on top?
did the flakes "sink" into the epoxy? or are they exposed (can you feel them)?

i'm wondering if the flakes would rub down after a while
 
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steve392

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Mar 21, 2006
Messages
51
Location
New Jersey
index,
There is no clear coat required...in fact, if you go to the Epoxy Coat website, they give an explanation why clear coating is not desirable. The flakes lay flat and are more or less flush with the epoxy, not laying on top of it. It still has enough of a surface feel and "roughness" to it to make the anti-slip grit unnecessary in my opinion.

Steve
 

David Hawkins

Member
Joined
Oct 1, 2006
Messages
21
Dang...I was hoping to get this done while the concrete was still virgin. 35 days after the pour will be into December and I'm not going to leave my cars outside that long, in that weather. I probably also won't be able to coat in December due to the temperature.
 

rbcsaver

Member
Joined
Oct 8, 2006
Messages
6
Location
North East PA
David Hawkins said:
Dang...I was hoping to get this done while the concrete was still virgin. 35 days after the pour will be into December and I'm not going to leave my cars outside that long, in that weather. I probably also won't be able to coat in December due to the temperature.

Interesting, they told me 30 days, which was last Sat. and I planned on putting down the Epoxy Coat finish on my 30'x40' garage yesterday (Sun). However, there were still some damp spots in the stress cut edges and along the wall. So a no-go for a few days. I will add to the thread when that happens.

My 6" floor was put down in one pour and doesn't have any metal re-inforcing, but it has fiber strands through-out and it was my thought that these fiber hairs, which poke through the concrete surface will actually help bond the epoxy paint. However, when having your floor poured, and you are absolutely 100% sure that you are going to put on an epopy paint, ask your mason NOT to power trowel the floor til it shines. This makes it very hard in strenght and tough to etch. Just something I learned, after the fact and from my experience. I did give some thought to only sealing the floor, but really wanted it to look nicer than just concrete.
They told me at Epoxy Coat, that cold temps will slow the cure, but not prevent it like an oil or latex paint. As I recall, epoxy chemical reactions are exothermic.

Thought you would like to see the 36"x5" floor drains that my mason (a neighbor) put in. Much better than those 3" round things that are pretty useless. I'm also curious about my cost for the floor, vs your experiences.
For my $5500, I got a 30'x40'x6" floor, fiber stranded, with 8" at the (2) garage doorways, 2 drains as pictured and the 6 mil vapor barrier. How does this compare with others?
regards,
Steve
 

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rbcsaver

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Oct 8, 2006
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Location
North East PA
Steve393 had a very goog write up and I used his experience as a guide and I would like to add some of my experience too.

I had 3 kits to do 1200 square feet (30x40 ft). I placed all of the A components into one of the large (included) pails for color consistency. I then used my dry wall compound mixer on my drill to mix inittially and between each 3 quart batch. The solids tend to separate out. The included mixers are too short for this part and they are also fragile.

I bought disposable marked paint pails from Lowes to measure the batches and mixed them as neede in one of the A containers and mixed thoughly with the included plastic mixer. Keep the measuring containers for A and B clean and only for that component using them repeatedly. I also purchased a cheat set of rubber cooking spatulas to lean the component out of the measuring paiks, buckets etc. I used 3 and kept them segregated for only used with part A, Part B or the mixture.

It has been very cool here in PA and was probably high 40's when we applied the epoxy last Mon. afternoon to about 10 PM. I found the included plastic squeegy ineffective and broke. I had an 8" real squeegy (not real expensive) that I used after the first 3 quart application and found it to be far superior.
2 days later I am able to walk on the floor, but will wait a week for use.
The wall insulation is a work in progress and will contiue later in the week, or next.

regards,
Steve
 

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ersatzs2

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Aug 9, 2006
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630
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Mercer County, New Jersey
rbcsaver said:
Steve393 had a very goog write up and I used his experience as a guide and I would like to add some of my experience too.

Thanks to both Steves for the writeups on Epoxy-Coat. As usual I didn't read them with as much care as I wish I had until after finishing my project. Well almost finishing: I also had 1250sf and bought three containers, but only finished 2 of my three bays. I guess I put it on kinda thick.

I thought I'd add a few of my own comments to this already great thread:

Even though my floor is brand new, the pour maybe cured too fast and developed a skin on top which powerwashed off. This made for a lot of work in one bay where I removed it all, and a lot of swirl marks and craters where I scarified it and powerwashed less thoroughly in the other 2 bays. Even though I applied the coating thickly, it sank into the craters which now look somewhat uneven. In areas where I saw this happening, I drizzled extra material into the crater with a paintbrush, and these came out great.

Tools: The spatula is a great idea. So is having seperate measuring containers. I didn't do either, and wound up with a little extra hardener. I used a window washer squeegee about 18" long attached to a broom handle. I used a fiberglass extension pole for my roller which also worked great, allowed me to make 12' continuous sweeps w/the roller. I bought spiked shoe attachments which were essential for touching up the cratered areas.

I mostly mixed my batches in 3 quart increments (2+1). A few times I doubled this, and those sections for some reason came out much better. Not sure if they were mixed better, or whether the chemical reaction is just more managed in larger quantities.

Generally the floor looks fantastic this AM, but I am looking at buying one and maybe two more buckets of mixture in order to finish!

PS by the way I opted not to use the flecks. It just looked so pristine without them I could'nt bring myself to add them in! If I have to buy two more buckets instead of one, I may tape out some walkways and used the flecks on those...

<<<EDIT>>> Update 12/6. The heavily powerwashed areas caused yellow streaked depressions in one section. I emailed epoxy-coat and got the response that the more porus concrete absorbed the mix more quickly than surrounding areas. This AM, I wiped the yellow film off with a rag soaked in Xylene. It came right off and the surface underneath seems normal. I ordered two more kits to finish my remaining ~350 sf, so intend to put it on really thick. On this last section the surface skin of the Concrete is completely gone it is as rough and porus as a sidewalk...
Oh and Craig at Epoxy-Coat also told me to backroll a final time 10 minutes after application to even out the depressions. He said it was ok to walk on it (w/spikes) for 25 min.
 

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ersatzs2

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Mercer County, New Jersey
ersatzs2 said:
<<<EDIT>>> Update 12/6. The heavily powerwashed areas caused yellow streaked depressions in one section. I emailed epoxy-coat and got the response that the more porus concrete absorbed the mix more quickly than surrounding areas. This AM, I wiped the yellow film off with a rag soaked in Xylene. It came right off and the surface underneath seems normal. I ordered two more kits to finish my remaining ~350 sf, so intend to put it on really thick. On this last section the surface skin of the Concrete is completely gone it is as rough and porus as a sidewalk...
Oh and Craig at Epoxy-Coat also told me to backroll a final time 10 minutes after application to even out the depressions. He said it was ok to walk on it (w/spikes) for 25 min.

OK one more update just to correct the record: The yellow streaked depressions seem not to be caused as I'd thought by more porus concrete, but because the epoxy just wasn't mixed enough. I had a little help for these sections, and although my son mixed for 3 minutes, I don't think he adequately stirred the spade around leaving some hardener unblended. These areas have been getting harder and harder and the company told me it might take 2 weeks before they are fully hardened. Even cleaned up I don't think this section looks good and may go over it with another coat.
 

ersatzs2

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Messages
630
Location
Mercer County, New Jersey
ersatzs2 said:
OK one more update just to correct the record: The yellow streaked depressions seem not to be caused as I'd thought by more porus concrete, but because the epoxy just wasn't mixed enough.

Here are two photos of the sections that weren't adequately mixed. A month after application, the sections are very hard and seem plenty useable, they just don't look too good. If I have the energy I will sand and try and fill with some remaining epoxy I've got. If not I'll just live with it.
 

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