Always good tips! It would be nice to make a list of which primers bonds works for epoxy floor, and help people to know the options they could have out there 👍
Thank you so much for your giving me and my family the proper information on concrete floors and epoxy... You taught us more in your video than all the 100 people we have talked to... Now we feel confident about doing the floors after watching your video.... Thank you from all of us here in Jacksonville, Florida ✌️😎
Thank you very much for sharing your experience, knowledge, and for talk it so clearly! (I speak very little English, but it is very easy to understand).
Thanks! I am not in the US so I am not aware of the main brands in your market. In general I would ask for a low viscosity primer that is thin enough to penetrate the substrate, cause some primers are quite thick and tend to float on top of the product. For the past few years I have switched to using water based epoxy primer and I have been very happy with the results
Primer is the stuff we put underneath the coating. It is usually clear colored and it is applied to penetrate the concrete and prepare a layer for the main coating to follow Have a look at this article learncoatings.com/how-to-apply-epoxy-floor-paint-a-step-by-step-guide/
It depends on the surface. If it is on concrete, the clear finish can serve as a primer as well. But you may need to so several coats to get a good finish
I have a brand new concrete garage floor that was sealed by the contractor. Should I grind off the sealer? OR should I just prime with Rustoleum primer, then use my epoxy shield, chips, and clear coat... Thoughts?
It really depnds on the sealer. If it was epoxy based just apply on top. Often however these sealers can be acrylics that may not bond well with the epoxy. Light sanding and a primer is probably the safest choice
I prefer rolling for the simple reason that I like that little bit of extra pressure when the roller pushes the product into the substrate. It gives the feeling that the primer is actually penetrating the substrate
Good point! Will definitely give it a try in my nex job!!! I can't seem to find workers who are willing to spend enough time rolling and pushing properly without creating lines and streaks so I will do the rolling
Thaks a lot for your best explanation, My question is that Only epoxy primer is suitable for terrace waterproofing, If yes How many years of Durability.? Otherwise Suggest me a best waterproofing for terrace for longlife....
If it is epoxy paint and in a fairly decent condition, then you dont need primer. Just give it a good clean. If you are not sure what materials were used, I strongly advise to apply a primer first to make sure that you will get proper bonding
Good question. As a rule of thumb wait until the next day. Many primers cure faster depending on the product and the weather condition. Never apply over a wet primer but if the product is slightly sticky go ahead and coat over. In fact it's probably better to apply when the product has a very slight stickiness
hi, i have epoxy floor, when i use floor jack to lift the car, because of the weight of the car, in the jack, epoxy peeloff, question is if i properly grind the floor using 40 grit shot blast, prime it and have minimum of 4mm epoxy ... will that stop peeling problem?.. or irrespective of what i do , weight of floor jack will alwAYS peel epoxy. pls advise.
Floor jack should not cause epoxy to peel. It sounds that you either have a very thin epoxy thickness or the substrate was not prepared. If you sand the floor apply a primer and apply minimum 400-500 microns you should be fine
@@learncoatings-epoxyfloorin9448 Thanks so much. if i want to recoat epoxy which has clear coat applied, do i need to sand all the way to concrete or can i just sand it with 120 grit and reapply epoxy. This is a scenario where epoxy is good but the color is bad because of oil and other contamination. 2) if i use pressure washer to clean how much PSI is safer to pressure wash the floor.
I find that tiles require some grinding or sanding to ensure good bonding of the primer. Which means you would need to grind them first to avoid peeling of the primer. I am not sure if you would get the desired result
I have a question. I looked at an epoxy floor that has bubbles forming approx: 6 months after application. After poking the bubbles a brown watery liquid came oozing out. The liquid was similar to watered down motor oil. I'll give a bit of a background. The floor is throughout the repair shop in a dealership. The dealership was built in 1998. The floor had to be redone 3 times due to 3 different mishaps. One being a fire. This time there was new concrete poured in one area of the repair shop. The epoxy over the existing concrete was ground down and new epoxy was applied. The bubble are localized to the bays between the lifts. New concrete is unaffected and nowhere else throughout the repair shop. There has never been any flooring failures in the past. Only since the new epoxy was applied and only between the car lifts. Please help. Thank you for the help. Gary
This was most likely caused by some contamination of the substrate. Under the car lifts you get lots of chemicals dripping on the floor from oils, grease, battery fluids, brake fluids, you name it. It is very likely that such chemicals got into the floor and after some months they chemicals came up to the surface
1/11/2025 - what do you mean that by priming you increase the chances of bonding? How much is that increase? In other words increase the chances of bonding by 10%? 15%? 50%? If you can’t give a number then your advice is just rhetoric, in other words it means nothing.
Always good tips!
It would be nice to make a list of which primers bonds works for epoxy floor, and help people to know the options they could have out there 👍
Thank you so much for your giving me and my family the proper information on concrete floors and epoxy... You taught us more in your video than all the 100 people we have talked to... Now we feel confident about doing the floors after watching your video.... Thank you from all of us here in Jacksonville, Florida ✌️😎
Very Helpful I Agree I started to do my own floor and this video was the Key. Great Video
Great vid!! Im going to give it a go!!
Thank you very much for sharing your experience, knowledge, and for talk it so clearly! (I speak very little English, but it is very easy to understand).
thank you Sebastian for your feedback!
All excellent points. Very helpful. Thank you very much!
thank you for kind words!
Thanks a lot for nice presentation.
you're welcome, glad you liked it
Thank you for sharing this information. This was clear and helpful.
You are welcome Ryan!
lots of great tips thanks!
You're welcome!
Thank you for sharing your expertise.
Thanks Craig, you're welcome!
Good Advice
Could you please let me know which types of primer should i used?
Always use a two component epoxy primer. Personally I like using low viscosity primers that can penetrate the surface
Any brand you recommend from home depo or Lowe’s ??
Excellent video as always. I'm located in the USA, What brand or type of primer should I be using. Thank you
Thanks! I am not in the US so I am not aware of the main brands in your market. In general I would ask for a low viscosity primer that is thin enough to penetrate the substrate, cause some primers are quite thick and tend to float on top of the product. For the past few years I have switched to using water based epoxy primer and I have been very happy with the results
LearnCoatings - Epoxy Flooring Training
Thanks!
ThAnks
What is the difference between primer and epoxy coating?
Primer is the stuff we put underneath the coating. It is usually clear colored and it is applied to penetrate the concrete and prepare a layer for the main coating to follow
Have a look at this article learncoatings.com/how-to-apply-epoxy-floor-paint-a-step-by-step-guide/
Do you need to prime when doing a clear finish?
I have a new floor.
It depends on the surface. If it is on concrete, the clear finish can serve as a primer as well. But you may need to so several coats to get a good finish
I have a brand new concrete garage floor that was sealed by the contractor. Should I grind off the sealer? OR should I just prime with Rustoleum primer, then use my epoxy shield, chips, and clear coat... Thoughts?
It really depnds on the sealer. If it was epoxy based just apply on top. Often however these sealers can be acrylics that may not bond well with the epoxy. Light sanding and a primer is probably the safest choice
Do you still use the etch once the primer is dried before using the final epoxy?
No I would never etch on a primed surface. Etching is only suitable for cement or concrete based surfaces
Do you spray your primes or roll them? I favour machines (and have them) doing the work but want to know what you do or think is better
I prefer rolling for the simple reason that I like that little bit of extra pressure when the roller pushes the product into the substrate. It gives the feeling that the primer is actually penetrating the substrate
Good point! Will definitely give it a try in my nex job!!! I can't seem to find workers who are willing to spend enough time rolling and pushing properly without creating lines and streaks so I will do the rolling
@@learncoatings-epoxyfloorin9448 I have the same problem with hired help so I end up doing the rolling.
Do you have to use primer on countertop as well ?
Yes I would recommend it, since countertops may have collected moisture. You want test out the primer before you add the main coating
Thaks a lot for your best explanation,
My question is that
Only epoxy primer is suitable for terrace waterproofing,
If yes
How many years of Durability.?
Otherwise
Suggest me a best waterproofing for terrace for longlife....
Should I sand the primer after it dries before i add epoxy?
Primer does not usually require sanding if it is epoxy. However if you applied a polyurethane primer it might actually need some sanding
Sound advice. I am going to epoxy my garage. What primer would you recommend for residential application?
Definitely an epoxy based primer and it's best to use the primer from the same company that the epoxy coating manufacturer recommends
Hi have question. My basement already painted so can I apply primer on painted floor? Or can I apply epoxy over painted floor?
Thank you
If it is epoxy paint and in a fairly decent condition, then you dont need primer. Just give it a good clean.
If you are not sure what materials were used, I strongly advise to apply a primer first to make sure that you will get proper bonding
What kind of primer is good sir ?
When using an epoxy primer how long to you wait before applying the epoxy coating or top coat? Does the primer have to be completely dry?
Good question. As a rule of thumb wait until the next day. Many primers cure faster depending on the product and the weather condition. Never apply over a wet primer but if the product is slightly sticky go ahead and coat over. In fact it's probably better to apply when the product has a very slight stickiness
Hi, can I use an acrylic primer?
No I don't really recommend it for a floor. You want something much more durable that will bond properly with the epoxy
What kind of primer should I use
Epoxy primer two component. Depending on the substrate you can go with a low or a high viscosity primer
Superb
What kind of primer we can use for epoxy coating?
Only use epoxy based primers
hi, i have epoxy floor, when i use floor jack to lift the car, because of the weight of the car, in the jack, epoxy peeloff, question is if i properly grind the floor using 40 grit shot blast, prime it and have minimum of 4mm epoxy ... will that stop peeling problem?.. or irrespective of what i do , weight of floor jack will alwAYS peel epoxy. pls advise.
Floor jack should not cause epoxy to peel. It sounds that you either have a very thin epoxy thickness or the substrate was not prepared. If you sand the floor apply a primer and apply minimum 400-500 microns you should be fine
@@learncoatings-epoxyfloorin9448 Thanks so much. if i want to recoat epoxy which has clear coat applied, do i need to sand all the way to concrete or can i just sand it with 120 grit and reapply epoxy. This is a scenario where epoxy is good but the color is bad because of oil and other contamination. 2) if i use pressure washer to clean how much PSI is safer to pressure wash the floor.
I have a problem with my tiles where the shiny coat had faded. Can I use primer only without using top epoxy coat? I don't want to color my floor.
I find that tiles require some grinding or sanding to ensure good bonding of the primer. Which means you would need to grind them first to avoid peeling of the primer. I am not sure if you would get the desired result
My primer started peeling before I applied the epoxy. What happened?
1) Primer was not suitable for substrate
2) Primer was not properly prepared
3) Contamination on substrate
I have a question. I looked at an epoxy floor that has bubbles forming approx: 6 months after application. After poking the bubbles a brown watery liquid came oozing out. The liquid was similar to watered down motor oil. I'll give a bit of a background. The floor is throughout the repair shop in a dealership. The dealership was built in 1998. The floor had to be redone 3 times due to 3 different mishaps. One being a fire. This time there was new concrete poured in one area of the repair shop. The epoxy over the existing concrete was ground down and new epoxy was applied. The bubble are localized to the bays between the lifts. New concrete is unaffected and nowhere else throughout the repair shop. There has never been any flooring failures in the past. Only since the new epoxy was applied and only between the car lifts. Please help.
Thank you for the help.
Gary
This was most likely caused by some contamination of the substrate. Under the car lifts you get lots of chemicals dripping on the floor from oils, grease, battery fluids, brake fluids, you name it. It is very likely that such chemicals got into the floor and after some months they chemicals came up to the surface
isn't there a self priming epoxy floor coating
Some companies claim to have self priming coatings, but I'm quite sceptical of such products for the reasons explained in this video
In india
1/11/2025 - what do you mean that by priming you increase the chances of bonding? How much is that increase? In other words increase the chances of bonding by 10%? 15%? 50%? If you can’t give a number then your advice is just rhetoric, in other words it means nothing.