CoverShield U140 semi Gloss

[tstealth32]

What kind of residue are you having? I didn't have anything, once dried, I could tell the pores really filled in. I used a 2 gallon garden sprayer, applied a line 3' deep by 10', then used a microfiber mop to rub it in.

 

[CoverTec]

I just joined this group so I can provide some technical support.

For best results, we recommend staining the concrete first using our Color Stain UV products. The ColorStain UV concentrate can also be added directly (undiluted) to U140 to impart color in a single step. However, this method is more of an art than a science!
If you add approx 6 to 8 fl.oz Color Stain concentrate per mixed gal of U140 you get a solid color. You also need to add the exact amount to each mixed gallon to get color consistency.

See the images below. I trust this assists.

 

[CoverTec]

Tstealth, tell me about applying your densifier. I used a different brand of colloidal silica and been having a nightmare dealing with the residue.
Shea, from the looks of your pics and everyone else's, I'm not so sure both products aren't the same thing.

The use of a concrete densifier depends on the quality and strength of the concrete. Densifying the concrete can harden the concrete and increase overall sealer adhesion and durability. Densifying can also help with increase shine. We recommend the use of our Surface Finish CD80. This product is colloidal silica with very small particle size (3 to 8 nanometers). These nanoparticles mean that the densifier penetrates deeper and reacts faster (30 to 60 minutes) than standard concrete hardeners. SurfaceFinish CD80 is supplied in a concentrate (1 gal makes 4 gals ready to use) so it is very economical.

I trust this assists.

 

[CoverTec]

whoops getting used to this platform. See photos attached

 

[Shea]

Shea, from the looks of your pics and everyone else's, I'm not so sure both products aren't the same thing.

They are very similar products that do the same thing, but they are not the same manufacturer as far as I know. It's akin to the single-part polyurea coatings that are now popular and discussed here on GJ a lot. They all look the same, but they are supplied by different manufacturers.

I think this type of coating fills a desired niche and just needs more exposure to the DIY audience.

 

[Jking24]

whoops getting used to this platform. See photos attached

Do you have photos of any of the lighter colors besides gray. Also are the photos shown gloss or matte

 

[ducatithunder]

Is this stain a solid color or can it me used similar to an acid stain prior to topcoating. I could be interested in seeing some more stains in color.

 

[Steve in UT]

Finally got it covered. I will give the whole story when I have access to a keyboard. In the meantime here are some pics and a video link at the bottom.

Grandkids playing on the new floor in their socks.










Video link

 

[124ci]

Yours looks more of a semi gloss than matte?

 

[Jking24]

Looks good how many coats was that total ?

 

[ducatithunder]

Finally got it covered. I will give the whole story when I have access to a keyboard. In the meantime here are some pics and a video link at the bottom.

Looks great. That is the amount of shine I am looking for and expected from a semi gloss. Did you just clean the concrete or did you grind or etch prior to application?

 

[Steve in UT]

As I said in post 29, a friend and I went over the whole floor with the buffer and black pads and it looked real good. I should have put on the u140 at that point. But, I coated the whole floor with a colloidal silica densifier and my problems began. In retrospect, I may have been ok if I had let it sit for an hour and rinsed the densifier off, but, apparently my concrete was already fairly dense from the power trowel. Anyway, it didn't soak in much and left a nasty film. At first I thought I was ok because the film was transparent. But if you rubbed your hand across it, it would leave white residue on your hand. Worst of all, if you scraped it, it was fairly deep. So back to the drawing board. I tried to buff it off with the black pad, but that didn't quite get it all off. I then rented the 25 grit diamond plate for the buffer and ground my largest garage. I went both directions and it took me about an hour per 100 sq ft (1,200sqft.) not wanting to spend another 15 hrs grinding I experimented with some muriatic acid. With the proper mix and soak time it seemed to take the garbage off. So after the grinding, etching and tons of sludge later, I went back over the whole thing, all 2,750 sqft with black pads and made some more sludge.

Figuring the part that I had treated with acid was maybe not as absorbent as the diamond ground part, I figured I might prime that section. And the cussing ensued. I was sure I was in the process of the next big mistake. For some reason that I don't understand, rather than making it easier to wipe on with the microfiber pad, adding extra water to the mix made it feel like I was applying elmer's glue. But, after much effort and a contorted mop, I got it covered. The next day I decided to do the 18" roller thing. That went fairly well. I would definitely advise using the roller for the first coat. The next day I put the 2nd coat on with the microfiber mop. That went on nice and fast. A couple things I learned, Ace garden sprayers work much better than Home Depot's. The nozzle design doesn't clog. If you have a large floor, buy extra rollers. My first one stopped working after about 1,600 sqft. Oh and don't try to save mop pads or rollers, this stuff is not water soluble, it is waterborne polyurethane and is sticky as heck. Days later I still have it on my fingers. The stuff sticks!

As for coverage, I used one gal for the primer (makes 2 gal) and that did 1,450 sqft. I didn't use all the primer so I got real close to the 800 sqft/ gal. That left me with 7 gallons. I did 2 coats on 2,750 sqft and had a half gal or more left over. So I averaged about 850 sqft/gal. I have been doing this with the temperature at the very bottom of the recommended temperature, just over 50 deg. Seems to take about 3 days to harden up good at these temps. I could easily walk on it the next day.

 

[avrobob]

So how is this sealer holding up? Leaning towards sealer but second thoughts on the
Densifier seams hit or miss on application. Have about a 5 weeks to decide, new concrete soon. Curious how you like it.

 

[124ci]

Mine is still holding up fine. The floor looks like concrete with nothing on it, but yet has stain protection.

 

[CoverTec]

As I said in post 29, a friend and I went over the whole floor with the buffer and black pads and it looked real good. I should have put on the u140 at that point. But, I coated the whole floor with a colloidal silica densifier and my problems began. In retrospect, I may have been ok if I had let it sit for an hour and rinsed the densifier off, but, apparently my concrete was already fairly dense from the power trowel. Anyway, it didn't soak in much and left a nasty film. At first I thought I was ok because the film was transparent. But if you rubbed your hand across it, it would leave white residue on your hand. Worst of all, if you scraped it, it was fairly deep. So back to the drawing board. I tried to buff it off with the black pad, but that didn't quite get it all off. I then rented the 25 grit diamond plate for the buffer and ground my largest garage. I went both directions and it took me about an hour per 100 sq ft (1,200sqft.) not wanting to spend another 15 hrs grinding I experimented with some muriatic acid. With the proper mix and soak time it seemed to take the garbage off. So after the grinding, etching and tons of sludge later, I went back over the whole thing, all 2,750 sqft with black pads and made some more sludge.

Figuring the part that I had treated with acid was maybe not as absorbent as the diamond ground part, I figured I might prime that section. And the cussing ensued. I was sure I was in the process of the next big mistake. For some reason that I don't understand, rather than making it easier to wipe on with the microfiber pad, adding extra water to the mix made it feel like I was applying elmer's glue. But, after much effort and a contorted mop, I got it covered. The next day I decided to do the 18" roller thing. That went fairly well. I would definitely advise using the roller for the first coat. The next day I put the 2nd coat on with the microfiber mop. That went on nice and fast. A couple things I learned, Ace garden sprayers work much better than Home Depot's. The nozzle design doesn't clog. If you have a large floor, buy extra rollers. My first one stopped working after about 1,600 sqft. Oh and don't try to save mop pads or rollers, this stuff is not water soluble, it is waterborne polyurethane and is sticky as heck. Days later I still have it on my fingers. The stuff sticks!

As for coverage, I used one gal for the primer (makes 2 gal) and that did 1,450 sqft. I didn't use all the primer so I got real close to the 800 sqft/ gal. That left me with 7 gallons. I did 2 coats on 2,750 sqft and had a half gal or more left over. So I averaged about 850 sqft/gal. I have been doing this with the temperature at the very bottom of the recommended temperature, just over 50 deg. Seems to take about 3 days to harden up good at these temps. I could easily walk on it the next day.

Steve, did you use a silicate densifier or colloidal silica? Normally if you over apply colloidal silica you can sweep off the residue.

 

[Jking24]

Mine is still holding up fine. The floor looks like concrete with nothing on it, but yet has stain protection.

Did the little bit of sheen you had go away ? does it still have that matte look it had in your photos ?

 

[124ci]

still has the matte look.

 

[krod]

Sharing my experience...

We finished the lightly burnished floor on my detached build with U140 semi-gloss. It took two full coats at 1 gallon per coat. The finish is exactly what I was going for, slightly glossy concrete. Oil wipes right up!

The product was easy to work with and flowed out well. I used a microfiber mop to spread it out and worked in ~3' wide passes, smoothing it out as I worked.

Before:
View media item 105883
After:
View media item 106205

 

[124ci]

looks nice. mine is holding up fine, as i spill stuff on all the time.

 

[Shea]

Very nice!

 

[Steve in UT]

Looks good! I have a couple machines that drip oil. It will sit on the floor for weeks at a time and wipes up nicely every time.

 

[fouckhest]

Really happy I found this thread, I am really leaning towards this product for my new concrete floor!

 

[Jking24]

Sharing my experience...

We finished the lightly burnished floor on my detached build with U140 semi-gloss. It took two full coats at 1 gallon per coat. The finish is exactly what I was going for, slightly glossy concrete. Oil wipes right up!

The product was easy to work with and flowed out well. I used a microfiber mop to spread it out and worked in ~3' wide passes, smoothing it out as I worked.

Before:
View media item 105883
After:
View media item 106205

You say lightly burnished. Did you burnish it after applying? Or are you referring to the condition of your floor prior to application. You pics look like it just had a really nice hard/ power trowel ? Thanks for the update

 

[tstealth32]

Just an FYI, brake cleaner eats right through this. Make sure you put plastic or something down first.

 

[clonestocker]

This is exactly what I'm looking for. What exactly is the procedure from start to finish? My slab is brand new and has been curing about 6 months. 4000 psi concrete that was bull floated and hand troweled w/ saw cuts and has been covered with painter's tarps since framing was started. I'm thinking the semi-gloss or matte finish. Which will appear like concrete? thx matt

 

[Steve in UT]

This was my first positive experience with U140. Not too long after I finished the floor, I left a floor scraper standing by the garage door. It rained and water leaked under the garage door a little. I didn't notice until the water had evaporated, that the scraper had left a nice rust stain. I just knew I had my first permanent mark on the floor. Not so! A moist paper towel and one wipe, presto no more stain. I was pleasantly surprised.

 

[krod]

You say lightly burnished. Did you burnish it after applying? Or are you referring to the condition of your floor prior to application. You pics look like it just had a really nice hard/ power trowel ? Thanks for the update

It was a power troweled finish prior to the U140 application.

 

[Jking24]

Just an FYI, brake cleaner eats right through this. Make sure you put plastic or something down first.

Care to show some pictures? Was it directly spayed in the floor to wipe somthing up or just fell from the work ? I'm getting ready to apply This stuff and that is really making me second guess my next move

 

[fouckhest]

Care to show some pictures? Was it directly spayed in the floor to wipe somthing up or just fell from the work ? I'm getting ready to apply This stuff and that is really making me second guess my next move

Definitely curious on this too, I use a lot of brake clean in my shop and was planning to use this...

Possibly the Covershield representative could comment?

Interestingly the data sheet says brake clean has no effect after a 24hr exposure
https://www.covertecproducts.com/wp-content/uploads/2020/08/COVERSHIELD_U140_MATTE_TDS.pdf

 

[SSStang]

124ci how's the floor holding up?

 

[Steve in UT]

Not sure we are all talking about the same brakleen. I sprayed some of this stuff (CRC Brakleen) on a small spot and left it for a minute or so. It didn't seem to do anything to the U140. I put some water on the spot to see if would soak in or reveal a bad spot. Still looked great. I may have to try an overnight test. But so far I am encouraged.

 

[124ci]

My floor is holding up great. I just clean up any spill when I get around to it. wipes right up.

 

[Jking24]

My floor is holding up great. I just clean up any spill when I get around to it. wipes right up.

Have you had brake clean on it ? Thanks

 

[124ci]

Not that I remember. I will spray a spot today if i remember to.

 

[Jking24]

Not that I remember. I will spray a spot today if i remember to.

Thanks

 

[124ci]

sprayed brake cleaner, waited, wiped it up. poured water on spot, let it set for about an hour in a puddle. wiped up water. Mine holds up to brake cleaner in my opinion.

 

[fouckhest]

sprayed brake cleaner, waited, wiped it up. poured water on spot, let it set for about an hour in a puddle. wiped up water. Mine holds up to brake cleaner in my opinion.

Very much appreciate you testing this, looks like this will be my solution.

 

[Jking24]

sprayed brake cleaner, waited, wiped it up. poured water on spot, let it set for about an hour in a puddle. wiped up water. Mine holds up to brake cleaner in my opinion.

Thanks alot this puts my mind at ease

 

[Shea]

CoverShield U140 is very similar to TS210 by Concrete Sealers USA which we reviewed and tested. The tests included brake fluid, acetone, mineral spirits, carb cleaner, used oil, transmission fluid, grease, and etc. It performed very well. I would expect that U140 would do so as well.

https://allgaragefloors.com/ts210-concrete-sealer-review/

 

[jabelding]

Applied U140 on mine this spring. It has held up really well, it will be interesting to see what happens this winter with all the road salt water coming off my cars. 7month old slab pressure washed it then applied 3 coats with sprayer and microfiber mop.