Can you Apply Epoxy on Rough Concrete?

[@jkapown]

Great information & presented in an easy to follow very coherent fashion, thanks for the content, keep up the good work.

[@learncoatings-epoxyfloorin9448]

Thanks I'm glad you liked it!

[@luispinheirodosmontes7219]

Your video was posted 2 yrs ago but only now I've came across it (because only now I'm searching for solutions to my recent problem). On a balcony here at my place I had to make a new sand/cement screed which I did for the first time in my live and completely on my own. Which means I had to mix the screed in a big bucket, apply it to the floor, check levels, etc and then repeat about 16 times necessary to cover the small balcony. And to top it all it was a pretty warm day, 25°C plus...Well the result was a very weak screed at places which I repaired by taking off as much as I could the more lose parts and patch it with a new cement mix...Its a mess but its also a balcony we don't really use. So my dilema is, (for the sake of getting the balcony waterproof) would an epoxy floor ( primer + self leveling + epoxy layer) do the job? Taking it that I will do a good job of applying the epoxy of course? I know, soo many questions but in reality I'm a bit stuck here...🙏 Thanks for your help...

[@learncoatings-epoxyfloorin9448]

Epoxy should not be applied outdoors as it will crack under the sunlight exposure. You want to consider a polyurethane wateproofing material that is suitable for outdoors instead.I would advise multiple priming to strengthen the cement and then apply a polyurethane on top to properly seal it

[@spamspammons]

Finally, some common sense. Thank you!

[@judyb9894]

I have concrete countertops with a raw edge. I would like to create a clean edge. I don't want to grind or cut it as it's thin in some places. I thought I could build a frame/mold situation and fill in the rough edge with epoxy. The concrete is solid, not soft. Would this work?

[@zhanmeixu5226]

Thank you for solving all my doubts. Very clear and informative!

[@learncoatings-epoxyfloorin9448]

Glad it was helpful!

[@Brianahalfalien]

What do you think about a concrete garage floor where there’s a lot of aggregate showing? It’s in good shape other then that. Very minimal patching for cracks with an epoxy patch kit, but do I need to patch all these areas where it’s down to the aggregate. Just curious if the epoxy coating covers this? What’s ur best advice for me thanks

[@sawengseng2376]

Hi, thank you for your information.

[@vfxhouse6499]

What exactly is the difference between diamond grinding new pour self leveling compund layer vs simply broom finishing the new poured self leveling comound. That pits the groves for the epoxy to adhere no? I don't want or have ro diamond grind and seems a good alternative ?

[@archieanderson2945]

YEs a great informational video. I did learn a great deal from this video. Thanks for sharing your knowledge.

[@learncoatings-epoxyfloorin9448]

Glad it was helpful!

[@roryfairly1998]

I would strengthen and tighten that crumbling, loose, powdery concrete by trenching it with an acrylic, polymer admixture before trying to put anything over powdery loose concrete.

[@Seneb8Khepera]

I pray you see this comment and respond. I live in the Caribbean where we use cement bricks and plaster to build homes. Galvanize roofs and all that. We mainly have tile available here and everybody tiles everything for the most part like kitchen, bathroom countertops and floors...walls etc. My question is, can epoxy be used directly on concrete surfaces like a kitchen counter or concrete pattern wall. Where cement plaster was used to make the wall look like stone, so a very bumpy plaster and not a smooth wall plaster. In the shower as well. I wanted to know if we could just paint the shower walls with epoxy? And not just a simple one coat clear epoxy but the granite, marble look epoxy on the walls. Can it just be painted on the wall and how would I go about that? What would the prep need to be? Sand the walls till smooth, prime sith epoxy primer and then pour from the top , the different epoxy colors to get my marble look, then brush them in maybe (with what kind of brush? A sponge brush? If that is what I do.) Then blow torch the whole thing for bubbles n such??? Not even sure epoxy is available for us to buy here but I still would like to try it and would love to know how to apply it directly to concrete walls. Pray you see this. Thank you

[@learncoatings-epoxyfloorin9448]

Hi a lot of different questions here, and I am not sure I understood them all. A few points: - Epoxy can be used on walls but only in very thin coats, otherwise you will get drip marks. It cannot be used as a leveler on rough plaster walls - If you want granite look on walls, there are better products than epoxy. Try microcement for example - Shower walls with epoxy is common and it is a good waterproofing solution

[@prasaddesilva1872]

can i have apply Epoxy on smoothest cement floor (used smoothest sand), pl let me know.

[@learncoatings-epoxyfloorin9448]

Yes you can, but I always recommend light sanding on super smooth cement, to make sure that you will have good bonding

[@chelsealane9967]

Can I pour surf board epoxy resin on a concrete counter top? It doesn’t seem soft and powdery. Also will not be holding anything heavy on top of it. It would be a front desk that was built for an office.

[@learncoatings-epoxyfloorin9448]

Yeah epoxy resins are often used for decorating countertops and tables

[@sportwinc5135]

thank u sir for ur leason respect from algeria

[@learncoatings-epoxyfloorin9448]

you are welcome, thank you for your support

[@12vLife]

I'd like to epoxy over new, well compressed soil cement. possible?

[@patrickg9156]

Should you apply a primer to a bare concrete surface before applying epoxy but after already prepared by diamond grinding?

[@learncoatings-epoxyfloorin9448]

Yes always apply primer on concrete. First grinding then primer

[@Michael_Lorenson]

So, if I really just want a smoother surface, could I do some process of grinding/polishing to get a surface that will remain stable over time, in an outdoor environment?

[@learncoatings-epoxyfloorin9448]

Yes grinding and polishing sounds great. And you could always coat a UV resistant varnish if you want the floor to look better. Epoxy is not recommended for outdoors anyways because it is not UV resistant

[@Michael_Lorenson]

@@learncoatings-epoxyfloorin9448 Thank you very much!

[@MysteryScienceGaming]

have you ever seen those finished concrete rollers people use decorative purposes? Stone, tree bark etc... could you just make a concrete roller that already had a profile of CSP 3-5 therefore negating any need to grind or shot-blast on new concrete?

[@cyclonudista]

I have a (vertical) rough uneven surface with stones, how can apply it there?

[@learncoatings-epoxyfloorin9448]

If your vertical surface is rough, it will remain rough after applying the epoxy. There is no way to achieve a respectable thickness wthout getting drip

[@ivatrifonova524]

What about the other way around? Do you think concrete will stick to epoxy covered surface?

[@learncoatings-epoxyfloorin9448]

No absolutely not. Epoxy is waterproof and concrete needs water to bond. So the concrete will never properly stick to the epoxy

[@bluseybmth7569]

I'm currently working on a warehouse that eventually needs epoxy, but my job is to patch and level the concrete floor in preparation. Is there a certain concrete patch I should use? Using redline speedcrete, and an epoxy crack chaser

[@learncoatings-epoxyfloorin9448]

There is no specific one I would recommend, if you plan to cover the whole floor go for a self leveling cement but make sure you apply within the recommended thicknesses of the product

[@bluseybmth7569]

@@learncoatings-epoxyfloorin9448 thank you so much. This warehouse is going to be 100% white professional laboratory epoxy and I cant wait for the outcome. Another question I had is how would you go about doing epoxy in sections. I'm being told to snap a line amd continue next time, but I always have trouble blending it in

[@learncoatings-epoxyfloorin9448]

@@bluseybmth7569 if I need to break up in sections I recommend using a high quality blue tape in between sections. So after the first section has dried apply a blue tape to mark the continuation. This way you will have a straight fine line rather than a smudgy joint

[@Kevin-vm7gn]

My concrete has been broomed finish, no cracks or flacking so can it just be epoxy garage floors

[@learncoatings-epoxyfloorin9448]

broomed finish usually means that it will be a little rough, you may want to grind it first

[@rosemariethomas4706]

What about countertops

[@Da.Troopers]

Keen to join your course sir. Will i be taught how to apply Epoxy Flakes for toilet flooring and toilet walls?

[@learncoatings-epoxyfloorin9448]

This epoxy flooring course focuses on fundamental principles and industrial epoxy. Toilet applications are very specialised. The link to join is here www.smallbizcontracting.com/epoxy-flooring-course

[@BOSSC351sProductions]

My concrete is fresh poured and I am awaiting the 28 day cure. It was brushed instead of machine smoothed. Is this a problem??

[@BOSSC351sProductions]

I am not expecting it to be completely smooth but trying to protect it from oil and grease and give it some color.

[@learncoatings-epoxyfloorin9448]

If it was brushed it will definitely need more grinding to make it smooth enough. Otherwise all uneven spots will show. Oily spots may gather in holes and cracks

[@digvijaysinghchauhan9101]

Sir can you tell me which type of primer is is used on concrete surface before appliyn clear epoxy or can it be applied without primer application?? Please reply fast

[@learncoatings-epoxyfloorin9448]

Clear epoxy is often used a primer itself. Many epoxy primers out there are just clear epoxies rebranded as a primer

[@digvijaysinghchauhan9101]

@@learncoatings-epoxyfloorin9448 Got it. Thankyou for your advice sir.

[@desigerz7364]

I applied a leveling cement on my rough concrete emediately after grind it to apply epoxy on it, is it OK please!

[@learncoatings-epoxyfloorin9448]

Make sure that you prime the self leveling cement first as such products can be quite porous. Other than that epoxy should stick on the self leveling cement. Occasionally I see cement fails when the self leveling hasn't stuck well to the rough concrete underneath

[@desigerz7364]

@@learncoatings-epoxyfloorin9448 Thank you so much

[@chenwu9788]

Do I need put primer first?

[@learncoatings-epoxyfloorin9448]

when you are working with dodgy concrete yes. In fact I always recommend primer regardless of the floor

[@rayeesshaikh785]

Can we mix silica powder with epoxy to level the floor.?

[@learncoatings-epoxyfloorin9448]

Yes that is a common practice but I recommend it mainly for small holes and cracks. You could apply a scrape coat after grinding

[@rayeesshaikh785]

@@learncoatings-epoxyfloorin9448 Thank you so much

[@ganskudige]

Is it ok to apply on granite flooring?

[@learncoatings-epoxyfloorin9448]

Granite is a very difficult surface to bond. Especially if it is smooth granite. If it is rough try using a low viscosity primer

[@ganskudige]

@@learncoatings-epoxyfloorin9448 thanks for the reply. Is it possible if we make the granite surface rough and apply the Priemer?

[@learncoatings-epoxyfloorin9448]

@@ganskudige yes it is possible but grinding granite can be quite challenging. You might need to diamond grind

[@nedalgeorges3969]

Thank you for all this information, I have a question hope you answer me , I have use epoxy for countertop and usually I use water base paint and primer on the wood before apply the first coat of epoxy . My question is can I use water based concrete primer on concrete flooring before applying epoxy or should I use (epoxy primer only ) . Thank you

[@learncoatings-epoxyfloorin9448]

in general I recommend only using epoxy based products for the floor. A general purpose concrete primer (like acrylic) is a much weaker primer in terms of tensile strength. So you would have tough concrete, tough epoxy and a weak layer in between. Dont recommend this

[@GISHNUCHALADY]

Can i do epoxy on top of cocrete paint?

[@learncoatings-epoxyfloorin9448]

Most concrete paint tends to be acrylic based. A strong chemical like epoxy is likely to damage the paint and may cause shriveling and breaking of the undecoat. I recommend removing it first. If you cant remove it, seal with a really solid epoxy primer first

[@mdalislam3174]

Thanks a lot, sir

[@learncoatings-epoxyfloorin9448]

Most welcome

[@paologutierrez5888]

This really helped thank you

[@learncoatings-epoxyfloorin9448]

Glad it helped!

[@ucc-antonyjamesvalan3060]

Great

[@michaeledge8905]

Don’t use a good key

[@Martin.Wilson]

Short answer.......No.