Introduction and Preparation

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Applying Epoxy. First step acid etching the concrete. Part 1.

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What happens here

The video begins by explaining the importance of acid etching a concrete floor to create a proper profile for epoxy bonding. It outlines the risks of epoxy peeling from smooth concrete surfaces, especially due to hot car tires. The necessary tools and materials are introduced, including muriatic acid and a plastic weed sprayer. The presenter advises on acid dilution ratios: 100% muriatic acid for very smooth floors, or a 70% muriatic acid to 30% water mixture for slightly rougher surfaces. Essential safety equipment like a 3M charcoal filter mask and rubber boots are highlighted, along with the critical need for a water hose to be readily available for immediate dilution or emergencies.

Goal: Understand the acid etching process and gather all necessary materials and safety equipment.

Tools and materials

3M Charcoal Filter Mask 3M — Protecting the respiratory system from acid fumes
Plastic Weed Sprayer RL Flowmaster — Applying muriatic acid evenly to the concrete floor
Pressure Washer — Thoroughly cleaning the etched floor
Rubber Boots — Protecting feet and lower legs from muriatic acid splashes
Water Hose — Rinsing the acid from the floor and for emergency dilution
Muriatic Acid Startex — Etching the concrete surface

What they say

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In this video, we're going to be prepping an epoxy floor to get it ready to put tile clad high solids epoxy on it. And we've been spraying the moratic acid on the floor to acid etch the floor. You want the floor to be acid etched well so it has a good profile and be rough enough for the epoxy to bond to the concrete. If the floor is too smooth, then the epoxy won't get a good bite to the concrete and there's a good chance that a car pulling into the garage could actually lift up and peel up the epoxy if the tires are too hot. And in order to spray this floor with Moratic acid, we use just a regular plastic weed household weed sprayer with just plastic nozzles. And I just use a RL Flowmaster weed sprayer, just lawn insect weed sprayer. And we'll be using, we have been using just moratic acid. And on this floor, and it typically takes me about a gallon of moratic acid to do a twocar garage. And I mix the moratic acid. If the floor is really, really smooth, I'll use it 100%. If the floor is fairly rough, a little bit rough, I'll mix about 70% moratic acid, 30% water. If it's, you know, this floor is really, really smooth and it's going to take a lot of etching to get it rough, I'll just use 100% moratic acid. And you can see we've sprayed this floor with Moratic acid. And it's still yellow where it's actually etching the floor. Once the floor is etched, we'll actually start washing all the moratic acid up towards the front of the garage. We don't want to wash it down the driveway. If you wash it down the driveway before it's diluted, you could actually etch and discolor the driveway. This is a brick paver driveway. So, we want to take and wash all the wall all the moratic acid up towards the front. And then we'll begin rinsing it down the driveway. And we got a water hose all set up and ready to go to do the rinsing. And then once it's rinsed, then we'll start power washing it with our power washer. items to have that are

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