How to make a Double Sink Concrete Countertop Vanity!

In this video I will show you how to make a double sink concrete countertop vanity as well as polish the top to create an exposed aggregate look as well as create a live edge with a silicone edge mold! I will also crack the the concrete (I totally meant to do that...) and repair the crack with a slurry. I hope you enjoy this video!
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PRODUCTS AND TOOLS I USED:
-Concrete Countertop Silicone Edge Form
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-STADEA Diamond Polishing Pad Set
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-Dust Shroud (Dustless Technologies)
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-Shop Vac adapter kit
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-Grinding Wheel
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MARSHALLTOWN TOOLS
-Bucket Scraper
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-Finishing Trowel
-55 lb. Mortar Mix
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-Flow Control
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-Set Control
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-Milwakee 18v Drill
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-Mixing Paddle
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[@dominickdanna9906]

use your jig saw to cut an X across the circle (sink mold). then they will fall out. no pounding.

[@hannibalkhane4240]

My company has poured concrete for over 20 years. We wrap our blockouts in Ethofoam, which is flexible. For everyday DIY, you can wrap multiple passes of tape OR use a strip of cardboard covered in tape... That will give a softer buffer between the concrete and the rigid blockouts.

[@NurseClaudia]

Beautiful work. You are making me miss my dad. He was a concrete mason and did beautiful work too.

[@brackco]

I made a double vanity counter top based off of your first video. I cracked it pulling pvc out. I made a second one and it turned out awesome. Wouldn't have had the confidence or know how without you. Thanks. I posted a video of both tops to my channel. Neither vid is as good as any of yours. I can tell you put alot of time and effort in these. It shows.

[@ircsmith]

Watched every vid I could on pouring counter tops. Went with your approach. Did my entire kitchen as my first project. Turned out great. I need to work on the dry grinding. My dust shield did not work so well. The one thing I could not overcome was the blush marks. You can see exactly where I poured each bucket. Maybe not wet enough? I also added fish tank gravel and had a hard time getting distributed evenly. Any ideas or suggestions? All my friends and neighbors what me to make them counter tops now!

[@Michael-dq7mz]

Nice job Mike! Thanks for the tip about the cutouts. I would have freaked out if that happened. 😆 Keep the videos coming. Great DYI instructions!! Thanks

[@bigm383]

Absolutely beautiful work!

[@MichaelBuilds]

Thank you so much!

[@JackieJP]

I absolutely love your videos!! Your skill, humor and energy are amazing! 👍🏼👍🏼👍🏼👍🏼

[@stoneinthefield1]

That is perfect! Made by a family member AND looks amazing. Great job!

[@billysmether6237]

You want to make a really cool countertop?????? Insert fiber optic into the mold so only the very end of the fiber contacts the bottom of the mold (top of countertop). It ends up looking like the night sky with stars when you dim the room lights. You can even have them changing color if you desire.

[@bonahisme]

Great looking stuff bro. I love to see the evolution from a few years ago. Kinda funny my bathroom project that I did back after your first vid, just popped up on my Facebook memories this morning. Then BOOM! same day you put out this! Love it!

[@TheRealAmythyst]

Yes we're the OG'S OF MB I was one of the first 100 been following ever since. Every time I ask I wonder if you can do this with concrete BOOM A VIDEO COMES OUT ANSWERING MY QUESTION. LOVE THIS GUY!!

[@MichaelBuilds]

Awwwwww memories! Haha Thank you so much!

[@MichaelBuilds]

@@TheRealAmythyst that’s my OG! Hehehe 😂

[@leinitta1760]

Best Concrete sealer is 100% silane…product is used for freeways. Concrete needs to cure for 28 days before application. Applied via Hutson sprayer…the stuff works well. Countertop looks great!!!!!

[@conradbennett3251]

Outstanding videos, brother! I am about to build a polished concrete hearth using your techniques, wish me luck!!

[@MichaelBuilds]

Good luck! 👍🏻

[@ShannonElizabethDesign]

how come you use Mortar Mix instead of concrete mix?

[@1steelwheel1999]

impressive as always. thanks for doing what you do

[@MichaelBuilds]

Thank you so much!

[@jaimieolson3796]

Can you polish it right away after removing it from the mold, or do you have to wait for it to cure more before starting in with the grinder?

[@anthonyaugusto1092]

Question. Do you put aggregate in the mix or is it already in it? Fixing to do countertop this weekend and was not sure if I should put aggregate on top to float in or not?

[@bradleywagner7199]

Idea for your next video....Glow in the dark exposed aggregate. Let's make something cool!

[@NordlundTim]

I want an L shaped pour countertop, I will have to have a seam, a butt joint, what is the best way to do that to not show the seam, or unavoidable and will have to sand it out?

[@Spad68]

Far to long between videos mike. Awesome stuff .

[@Deathbysnusnu125]

Funny how when I worked at Lowe's I had to give him a hard time about only using Home Depot. Now I am going to work at Home Depot he doesn't mention them at all. LOL

[@MichaelBuilds]

Well I still go to Home Depot anyway hahaha.

[@ronherkey148]

As strong as you're always bragging on that cement, it's shocking you have to reinforce any project, let alone a sink top that will never take any weight.. I've used that cement and HAVE cracked it with a similar thickness.. I thought I did something wrong... Seeing you crack it confirms that though that stuff sets up faster, it's clearly not as strong as the manufacturer claims. Secondly, for the sealer, you said in their instructions 'NO RECOAT will be needed, will see'. Then as you did it you said you used a FEW coats....

[@dmg4usc]

I have watched your videos and you sure make this look easy. One point of contention though. Putting the rebar in BEFORE taping is not good! Tapping the air out made the rebar sink to the bottom! The bottom becomes the top and when you start finishing the countertop, you’re looking at polished rebar! Think it would be best to tap out the air pockets THEN push the rebar in and smooth the top?

[@damanSV650]

Looks great! Because of you I had the confidence to pour a concrete hearth!

[@rogermccaslin5963]

Cut an angle (2° or so) in the sides of the knockouts. That will allow them to more or less fall out when you demold.

[@bumstudios8817]

Good idea..I was thinking something similar you could probably cut it in half or mostly in half to the center use tape to close the gap hole then cut the final part out when cured and it would basically fall out.. but the foam like he said sounds the best

[@rogermccaslin5963]

@@bumstudios8817 I've built hundreds of molds during my time in the marine industry. We always build in draft (angle) when we make a new pattern. Of course, we often used the pattern to build multiple molds off of so they need to be robust and retain their shape. I've also built a lot of one off patterns using foam when I wasn't too concerned about longevity or exacting tolerances. I think for something like these countertop projects, foam is a good choice to build the knockouts but if you are going to build them out of wood or some other "hard" material, it should be built in such a way (e.g. with draft) as to not break your part. Oh well, sometimes you learn hard lessons. But the hard ones are the ones I always remember. I'm sure the next time Michael tackles one of these, he'll be thinking "not gonna do that again".

[@bumstudios8817]

@@rogermccaslin5963 👍

[@ircsmith]

I design plastic injection molds and was going to suggest that. I just did my first pour and did that the sink knock out and the edges. taking the mold off was easy.

[@K9Trooper]

When you drilled into the wood sink plugs, you could have used a skill saw to cut across it. That would have split the form and not cracked the finished product.

[@MichaelBuilds]

Yep. I sure wish I had done that lol

[@patrickossowski5632]

@@MichaelBuilds i always use the leftover melamine for plugs just cut in four pieces when removing always worked ..... hope you are still havin fun now my brother -inlaw in quebec will be using your videos to do his own counter tops keep up the great content . thanks

[@primalrenovations7427]

Great video is this product available in the uk? If not what is the adequate product? Thanks.

[@broganboydmusic7561]

Michael. I poured my first counter yesterday and I have some pinholes and air pockets as well as a hairline crack on the front side of the sink. How would you suggest making the slurry? Of shoukd I just use NewCrete?

[@OldePhart]

How do you stand on the debate whether a long cure time equals a stronger finished product? I want to do this kind of thing, but only once if you follow my meaning. Those thin sections scare the crap out of me. Here's an idea for a vid I would find interesting - there is some debate about where, or rather how, to place your reinforcement. i.e. can you press just it in like you do where is will likely sink some small amount, or should you support it with wires so it can't sink. particularly the rebar where it's weight and profile would allow it to sink more easily than mesh. You could make small blocks using each support method, with and without flow control additive, then cut the blocks and see where it all winds up. Keep it up, love to see your notifications pop up.

[@corycampbell7167]

Hi Michael, great video, what did you use to make the slurry mix?

[@jeffreynewman7808]

Does the counter top show water dropplet stains? i know a guy who doesnt like his because the top shows all kinds of water spots. How is your experience with this?

[@greggromero8205]

You did not show the crack again after it was filled and polished....my guess is that you can still see it and it does not look good

[@seandeacon3950]

I used to to work on granite and marble countertops we used sealer and wax products and the wax would last up to 4 years

[@Austin-tp5qw]

if you had the time to let it cure, would you still recomend the motor mix? or would you use something else? just wondering about the strength for outdoor fire table

[@sancop]

Please let me know about progress of sealer!!! Love the idea but about to tackle (before 10/10/22)

[@MichaelBuilds]

So far the sealer is holding up very well 👍🏻

[@emagee7864]

Good work. I wonder if reinforcing bars in the short direction along the outside of sink would have prevented the crack. The stiff knockouts created stress on that “green” concrete.

[@renbe2001]

Michael... It's been more than 6 months. I gotta know the progress of that sealer. :-)

[@MichaelBuilds]

Making that video as we speak. Send me your email and I’ll email you some pictures so you don’t have to wait

[@matthewjones3534]

Borrowing from your confidence we pour a laundry room concrete counter today. WISH US LUCK! CHEERS mate - thanks for sharing.

[@justaddwata]

Don't see the Starbond CA glue link Michael.

[@MichaelBuilds]

Oh my god your right!!! Thank you so much Matt! I totally forgot! I put it in there now but here it is; promo code: MB10 at checkout for 10% OFF Link: www.starbond.com/?rfsn=3277732.445863 Thank you again Matt!

[@daileeholm9115]

Is there a way to make it white?

[@jonnydoe85]

Just an FYI - the diamond grinding wheel you list in your description will not work with the tool you're using. It doesn't have the threaded 5/8" -11 arbor.

[@quadsquadracingable]

Man I feel your pain! One of my firetable tops I got impatient and broke one side during demolding! Great project!!

[@VizXRyRy]

Very nice. Do we not get the 1 year update on the sealer? Or did I miss it? Also, what are your thoughts on other additives to RapidSet Mortar Mix? Like glass fiber for added strength, or maybe a bright white color pack to see how that affects it. I love your videos. Very entertaining and more importantly, educational. Thank you for your hard work.

[@daviddellariva]

Did you find that 5qts of water and 1 pack flow control was optimal? Did you use set control at all? I different channel suggested 3.75 qts of water and 2 packs of flow control and 2 packs of set control per bag. Any help would be greatly appreciated. Thank you!

[@samjohnson4846]

This did turn out amazing. I'm really surprised. I would have given up when I saw the Crack, but you can't really notice it after the repair and installation.

[@sarahstewart2059]

So I'm restoring my bathroom concrete vanities and they were here when I bought the place. Really want to bring them back to a glorious natural cement look and get rid of the stains and all things gross. Wet sanding seems to work a bit, but for the life of me, I have no idea what materials they used, how if at all they were sealed and with what. There are odd white drip marks on the edges, cracking in spots, basically what looks like dirt everywhere....wee 😒 Like to sand them down to naked and resurface them tbh. Your thoughts would be greatly appreciated. Cheers from Canada 🇨🇦

[@MichaelBuilds]

I would love to tell you that you could just wet sand them back to life but unfortunately you will have to go through a similar process that I went through in this video. You won’t have to start with the rough grits but somewhere in the middle like 400 or 800 grit and work your way up to 6000 grit.

[@sarahstewart2059]

@Michael Builds So quick with a reply! Thank you. I was expecting that tbh and will definitely take that advice. I'm not looking at bringing them to a shine, I prefer the more flat stone look, so perhaps I'll take it in stages with the grit and determine when to seal. I am tempted to resurface because there are some pretty big gouges in the sides of the sink cut outs. They are bottom mounted so makes things a bit easier woo hoo 😀

[@sarahstewart2059]

@Michael Builds loving your channel btw! Thanks for sharing all of your work. Cool beans for sure 😎

[@hoplessman1986]

Quick thought for you ..... just to say..love the counter and the amount of detail you go into is great as well.. but your art work should always have a logo or something that says you built it... it's there a way to do that? Or even some sort of way to put a design into the counter top? I have been playing around with 2 part epoxy and some fractal wood burning to create some pretty cool looking doors for my 75 gallon aquarium stand... but is it possible to do like a water stream affect or something similar on concrete like you can do with wood??

[@billmthacker]

After concrete is sanded and smooth , would an acid stain still be able to penetrate the concrete?

[@lurklingX]

it's a shame the rest of that bathroom isn't set up to really set off that top. too many competing things. would love to see like a white cab, so the concrete shows up better. or even just a solid color cab. definitely looks cool with the aggregate exposed and the rough edge! thanks for mentioning the foam. that would be something easier to work with. don't have a band saw.

[@banecker1]

Bro… BRO!! Do you have a granite top on your tablesaw?

[@MichaelBuilds]

Ummm… YEAH! And I love it! It my favorite power tool!

[@banecker1]

@@MichaelBuilds the need for information is real.

[@junkworks1]

I hope you ain't using a terrible towel to get that excess W-40 off!

[@wayneosteen1539]

Great job Michael! I'm wondering how you calculate the volume of concrete to prepare for a particular size of mold? I'm also curious, if foam is the way to go for inserts, why didn't you save yourself the trouble? :D

[@jeffreynewman7808]

Great job! how would you do a bottom mounted sink in this application?

[@stuobrien]

Hey Michael, love KBS (we've even had it on tap at our local tap house) and truly appreciate your content! I was wondering if the SimpleCoat sealant prevented the caulk from adhering around the edge? I really like the look of the stone after the sealant application! I am definitely going to try it on my next project. Thanks for demoing it!

[@MichaelBuilds]

Hey Stuart! The silicone had no problem sticking to the top with the sealant on it 👍🏻 🍻

[@jeffreynewman7808]

I just saw you do a water mark test. Great job. you answered my question, thanks

[@picayunebill6614]

Liked the countertop. Great job. Can you do one for an undermount kitchen sink? Would like to see how you tackle the round over top and sides of the inside of the cutout area. Also subscribed a long time ago. I think on your second video. Great work. Love your ideas.

[@jakebowers6075]

what is the difference between the mortar mix and counter top mix?

[@marielynn5234]

Hey Michael! 🥰

[@MichaelBuilds]

Hi Marie! ☺️ I hope you’re doing well 😊

[@JoeNielsen44]

I love the polished look! I used your methods and made wall caps for my gabion wall and they turned out so great! Ill be making more for the rest of my yard. Thanks Michael for your time effort and knowledge!

[@josephloomis9163]

Great work yet again. I will be tackling a project just like this in my bathroom. I have almost everything you have in your videos.

[@MichaelBuilds]

Nice! Well let me know if you need to barrow anything!

[@mike-carrigan]

Where are the follow up videos?

[@MTNmyMAG]

Where is the 1 year follow up on the sealer?

[@DZ-ib1gz]

Always great videos

[@josephsary5757]

Can you add coloring to mortar mix?

[@758Dino]

What aggregate did you use?

[@rotaryperfection]

Have you experimented with regular wood lacquer as a top coating?

[@MichaelBuilds]

Yes and it doesn’t last long at all haha. That was one of the first coating I ever tried on a concrete countertop simply because it’s what I had on hand lol 😂

[@rotaryperfection]

@@MichaelBuilds Good to know!

[@CNile-se9xw]

Today's my lucky day, your vids haven't come up for a long time (just discovered that I hadn't checked the "All" notifications bell 🙄) but it's fantastic that you haven't change a bit. Love the enthusiasm & fun filled information of your vids. Cheers from Australia. 👍🇦🇺👍

[@MichaelBuilds]

Lol 😂. I hate when that happens! Hello all the way over there!!!

[@gunslinger9560]

I made a wooden cross for my dog once

[@jasonbartlett7002]

Michael I absolutely Love your videos and have learned a lot! I’m about to do my kitchen counter tops and my wife would like a glitter or reflective component to the aggregate. What do you recommend? Thanks in advance!

[@MichaelBuilds]

Thank you so much for the kind words! Honestly I’m not sure because I stay as far away from glitter as possible. If someone gets me a birthday card with glitter on it, I run out of the house lol

[@hectorroman3866]

When you say spray w/ water for one house do you mean spray continously or just spray and wait for an hour

[@MichaelBuilds]

Keep it wet. When it soaks up the water, wet it down again. Do this for an hour or until the heat dies down

[@MillionDollarFlipper]

The most exciting part of this video is seeing you with your own Michael Builds bucket. That is very cool.

[@MichaelBuilds]

Lol 😂 thank you so much! I made it myself with a Cricut lol

[@jonw6376]

Very cool!

[@sancop]

I love the color!

[@johncampbell8462]

Lol 😂😆 you have soooooo many projects in mind for the edge molding

[@MichaelBuilds]

Yes I do lol 😂

[@mrhew3381]

Where is the 12 month review on the Simple Coat?

[@MichaelBuilds]

Good question LOL I completely forgot about the 12 month video haha. I’ll get on that as soon as I can. In the meantime, the vanity still looks great and there are still no stains.

[@obliquecolumn834]

I think I may be missing an earlier video. I am trying to source the edge molding used to create the rough vertical surfaces. Does anyone know how to either fabricate this or where to buy it. Thanks.

[@MichaelBuilds]

The link is in the description below 👇🏻

[@obliquecolumn834]

@@MichaelBuilds Michael, a big, sincere thank-you. I am going to follow your amazing example and create a terazzo countertop for my kitchen. I am a huge fan of terrazzo floors and countertops. It is out of fashion today and under appreciated so I am espectially glad you featured it.

[@tom-ss2mn]

Love it

[@maranathamark]

Michael, I'm sure someone else has suggested this, but if you want to use the ridged mold for the sinks, put a 10° to 15° bevel on the ridged molds (cutouts), which should prevent the kind of cracking of the countertop you had.

[@utiswartz1]

Im about to pour a 58"x 92" Island top with stove knock out! Do you have an tips for me on building the mold? How too splice the board together without it showing the seem on the finished product? Thanks Mike, love your show!

[@dennisschickling2249]

Looks Great.

[@imstumped2052]

I wish I had the skills to do this. I would love to replace my kitchen countertops with something like this. Nice job

[@MichaelBuilds]

You do have the skill! I just gave you the skill! Hahaha 🤣

[@shasboom5807]

Really appreciate you keeping it real with fixing the crack.

[@MichaelBuilds]

I try to be as genuine as possible 😉👍🏻

[@SigmaGuns]

ive become extremely intersted in concrete artisan work. I've watched a lot of videos from some of the best concrete artisans and i gotta say that your tips are a bit more thorough. I've learned a few things as well. I can see that concrete is definitely your main thing. Unlike most of these people on youtube with DIY channels who claim to be pros at a million things, I only really see concrete related things on your channel.

[@StuffTested]

Why didn't you use clear packing tape around the inserts instead of blue tape? Still loved the video and hopefully the sealant works well for years.

[@estikay00]

You have a concrete table top on your table saw!? Wow! That’s wicked!

[@billquillin1952]

That's Beautiful! Question: is it possible to build a concrete top durable enough for a work bench, where things get pounded on. A Lot!!

[@joeolejar]

I'm contemplating a concrete countertop for the kitchen. What do you think about a concrete backsplash?

[@lracgaming3013]

@michaelbuilds is there a way to add a specific color to the concrete countertop/vanity?

[@rogerburns2150]

Awesome Michael. I especially like the use of the KBS for testing watermarks. If you ever run out of projects to try, consider expanding out to my man cave/greenhouse. You have such great ideas and and inspiring videos!

[@PureMagma]

Great video soooooo many pro-suggestions along with the amazingly detailed steps for making that countertop too! I swear that "Michael Builds" is the epitome of "Experience is the best teacher!" I can't wait to try out the steps he outlined in this video!

[@MichaelBuilds]

Thank you so much! How is your huge remodel project coming along by the way?!

[@PureMagma]

@@MichaelBuilds Mostly finished. I didn't get the "industrial" looking walls like I wanted but everything else worked out great.

[@thatgirl3757]

That is one beautiful countertop!! you're soooo talented; good job on the crack repair.

[@RhumRunner41]

How well did the crack blended?

[@MichaelBuilds]

There are a couple shots in there of the crack after polish and if you can’t find them then I guess I did a good job of blending it hahaha. 😉👍🏻

[@jeffreypotter]

Looking to do an outside kitchen table top in place. Have you ever done that if so a video?

[@MichaelBuilds]

Yes but no… my very first video was an outdoor coffee table but it’s basically the same thing. Just a different base

[@jeffreypotter]

@@MichaelBuilds well here is an opportunity for a new video. BTW if you want to come to Phoenix AZ you can make it here LOL. I will send you photos when done.

[@charlessalisbury4237]

Loved it as always keep it up

[@MichaelBuilds]

Thank you so much Charles!

[@ivorylosbanos825]

This is just the video I was looking for! Looking to redo our entire house in concrete countertops and I want to try the first one in our guest bathroom. I am a little nervous, this really helps and I love those polishing pads, will have to check them out.

[@Orangie2008]

Michael, you're killing it! Way to go, man.

[@robertm348]

Great build! Thanks!

[@firemanj35]

Dude that is beautiful. Great job and thanks for the tips.

[@htownblue11]

Another fantastic build.

[@karenschlenker1241]

Just beautiful.

[@MichaelBuilds]

Thank you Karen! 😊