How to Epoxy Coat a Garage Floor – This Old House

This Old House host Kevin O’Connor assists epoxy-coating expert Doug Fasching in creating a good-looking, hardwearing, stain-resistant garage floor. (See below for a shopping list and tools.)

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Full episode:

Watch the How to Videos playlist:

How to Install a Garage Storage System:

How to Strip a Hardwood Floor:

How to Powerwash a Walkway:

Shopping List for How to Epoxy Coat a Garage Floor:
– two-part garage-floor epoxy with color flakes
– biodegradable degreaser, for cleaning oily stains from garage floor
– acid, used to acid-etch concrete floor surface
– chemical-resistant rubber boots, rubber gloves and eye goggles, required when acid-etching the floor

Tools for How to Epoxy Coat a Garage Floor:
– garden hose, used to rinse floor clean during surface-prep process
– plastic sprinkling can, used to apply acid
– long-handled scrub brush, for cleaning floor
– 3-inch paintbrush, used to cut in epoxy around floor perimeter
– paint roller and extension poles, used to epoxy garage floor
– wet/dry vacuum, for cleaning floor

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Will Powell says:

That was so nice of Alexi Lalas to help them epoxy the floor.

Mr. K P says:

Make it looks easy

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Rudy Cano says:

question, what is the name of the acid that u apply on the concrete?

Some Guy says:

They didn’t fill the cracks before laying the epoxy? Half-assed work.

kentucky ken says:

Dangit they didn’t paint themselves into a corner !
I guess that’s ok for a “showroom garage” but a working man’s shop floor … bare concrete !!

Tom Chi says:

Nice people. Not sure if Assad was off camera but where were the EPA hazadarous-materials respirators to filter the acid fumes or at least powerful floor fans to disperse them.

Reminds me of when I got my restricted pesticide license in 1974. True or False 10 questions, grade-your-own test. 1- Fish are tough critters. Pesticides don’t bother them none. True or False?

Fatsacks Allday says:

Does anybody know if i need to etch my brand new fresh poured concrete? also i want to epoxy an interior room and acid will be to difficult to wash away, if i need to etch will grinding and sanding be the best option?

cocojumbo says:

thanks, that’s complicated enough to get someone hired to do this or look for alternatives

P Luch says:

Fix the cracks first!

Michael Gretch says:


Carey Vandenberg says:

Everywhere I read and the videos I view it seems overwhelming better to grind the floor rather than etch with acid. They didn’t even mention that option in this video. Why?

Tmac Tmac says:

How many gallons of epoxy, did it take to do this 2 car garage? Looks like you only mixed one gallon for the first coat, but that wouldn’t be enough.. Would it? Thanks.

Paco Castillo says:

He forgot to say that the acid it’s no bio but super harm the environment

Nannette Battista says:

It’s simple, Just go to woodprix page – and enter the Wood World.

freddshuksan says:

I like how they used the flakes of the homeowner’s crushed skull to decorate the second coat of epoxy. What a great touch!

Michael Gretch says:

DG look d

Bertram Inc. says:

Cracks should have been filled/fixed. Color flakes are personal preference… I dislike the color flakes. Ruins that uniform color.

Roman Melchor says:

What type of acid did you use?

Grega Sever says:

The cracks are utterly horrible … next time you do a garage with such cracks i would recommend to cut diagonally into the cracky with a diamond cutter and insert metal binders into them (the cuts should be 5-10 cm apart) and then coat the whole garage with a primer, the next day use epoxy resin and stirr it up with some epoxy thickener and seal those cuts and the crack totally.
after that has been done, do another coat of epoxy resin (very slim layer, just enough to close any little holes which were left, with this you’ll skip the problems of any air bubbles later) and the next day you put your final layer of epoxy resin which will result in a perfect surface without and dents or holes in it.

(i do realize this video shows the water epoxy resin application).
best regards

9GSR says:

wow, this ppl hide the label of the products they used so you cant find them and then you have to pay them to do the job?. wow…

2010drive says:

It’s been 3 years…Guarantee that is flaking by now.

John McCabe says:

What if you have a sealer on the concrete?

Brad Wilkins says:

I’m comparing DIY products with Contractor grade materials here’s what I learned so far check out this video Buying contractor grade products provides more than 3 times the product for less than DIY kits and DIY usually don’t provide enough material.

A Mosaic Cosmos says:

“This Old House” huh? More like “My Rich Friend’s Mansion”…

garage flooring tile says:

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babu khan says:


j mack says:

Looks good, but you paint it once you will paint it again. This might work in the no snow states……….

Gregg Macey says:

They should have also told people to add a “Non Skid Additive” into the epoxy when you mix them……..otherwise when epoxy floors get wet they are like a fuckin ice-rink!!!!

Cliff Carlo says:

Professionals will address the cracks and imperfections first. This is “Bodgit and Scarper”
“Heeey! greeeat jaaarb” That will be 20 thousand bucks please sucker!

Bill Bradford says:

got one for u garage floor needs replaced but it has under storage how to fix

Art Benjadi says:

Bon courage

Barbara Richards says:

They need a “lazy man’s” way to do this. Such prep!!! I’d just pull out the can of paint and roller and go to town. Unless you plan on selling it or putting it on the market, just get it done. Or hire someone out.

Bernie Hunt says:

How do you address the cracks before coating?  The cracks are the MAIN reason I want to epoxy coat my garage floor.

Khokon Chowdhury says:

qatar 70363115

john smith says:

Yeah leaving those cracks makes this job pointless and ugly….not mention those colored flakes.

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