How To Install An Undermount Sink To A Granite Countertop

[@someguydino6770]

there are many, many videos that "attempt" to demonstrate best practices when installing an undermount sink; however this is the ONLY one that reccomended applying the painter's tape to eliminate the inevitable clean up of the chalking !

[@ForestWoodworks]

Random issue with my kitchen sink cropped up last night, and I discovered the wood "brackets" holding it up are split. Thinking I would have to remake that method, I'm at Home Depot waiting for it to open, so I could buy some PVC 2x4s, but I decided to research if there are other methods. This. 😮 I am now saved. Thanks so much! 💯

[@cindiroehm5981]

THANK YOU for this video!!! I bought a house several months ago and my SS undermount sink just fell! Thankfully, the garbage disposal landed on a basket of cleaning supplies so it only dropped an inch or so. Having a hard time finding someone to repair it so will be looking for the Hercules harness!

[@MaineDIYGuy]

Actually after doing this for 10 years I think this is the easiest way and from what you just explained this is much more cost effective. Not to mention the Hercules Sink Harness is guaranteed to last a lifetime. I like it this way and will continue to do so. I appreciate your input but this is the way I find to be best and most effective.

[@Mzungu12464]

MaineGraniteGuy ccccc

[@uniquesolidsurfacesfabrica9735]

The sink was installed wrong he turn the front of the sink to the back and the back to the front

[@MaineDIYGuy]

Unique lmao, first it wasn't installed, second what are you talking about? It's 100% correct.

[@acetb4494]

the way we do it at my shop is we have T slots in whatever stone you get, and we mechanically fastened it to the stone using bolts and clips, and with silicone around the rim

[@MaineDIYGuy]

I used to do it exactly like that, after having many sinks full of water and dishes drop from the weight inside it was time to switch to a better method.

[@naidavega1981]

Agree our sink was installed as mentioned and it dropped on us as well 😭

[@Worldofourown2024]

Thank you for this video. I moved into a 10 year old apartment block back in January with the same sink and granite countertop, but found my sink fell, put in work order, maintenance guy glued it leaving a jack, but then didn't secure the sink so it fell. I told him on the 2nd and 3rd work order that he needed to secure the sink and to watch your video if he needed knowledge for glue alone wasn't going to hold a sink up, but only intended to seal it. He copped an attitude refusing to listen to me again yesterday so my sink fell down again last night. Today I contacted his boss's boss and now they agree to what I said. Secure the sink either with posts or a steel cable like you used. They emailed me tonight saying they'll be back tomorrow to put posts in to hold my sink up. Why do you think an experienced maintenance supervisor failed this repair 3 times only giving the excuses that he's short on staff and the necessary parts for the sink weren't included?

[@1963Sly]

I had the sink falling on me, but it was bad since the sink full of water. It's unbelievable to find out that there was nothing holding the sink up except the glue. Must had been a dumb plumber that thought the glue would hold, unbelievable.

[@rollzolo]

I'm leaving the jacks on..I rather prefer the Formica tops, kiss.

[@Worldofourown2024]

@@rollzolo Yea, I still have a car jack under my sink which works to keep it up flush to the counter top. If I owned this place, I'd get 4 adjustable rods to hold it up. Granite cracked for the wooden support on the front already had water damage for the previous tenant who moved out in 2021 had problems with no fix due to no workers in the pandemic. Wish I could get them to rebuild the wooden cabinet holding the granite and put new doors on it too. It still works and is dry so it's stable. Housing and associated services is too limited and too expensive here in America. I'm leaving if I could ever get $1800 a month income to qualify for retirement residency visa over there in gorgeous healthy eating and lifestyle Thailand.

[@The_DC_Kid]

Good video. Very helpful. I'm removing Corian that has constantly dirty and stained molded-in Corian sink. Terrible concept but we got it "free" with countertop purchase.

[@TheMarkpee]

Thanks for your video. I literally just finished cleaning up a mess from my 13 year old undermount sink that decided to let go while full of water and dishes! Looks like an epoxy was used with pieces of granite. I will be ordering the hercules mount and using silicone. Thanks for the video, at least I'm not alone out here!

[@Spencerbuildsit]

Interesting and thank you. Any testing done on the strength vs. clips? The weak spot is the cabinet attachment. i should think it would be much stronger if the harness is attached to the stone. Less of a catanary, lots of tension on those screws. Do you bother with a harness when doing a vanity sink? Thanks

[@MaineDIYGuy]

Normally use plugs inserted into the stone on a vanity. Weak point is the cabinets but its simple fix by adding backer board if needed

[@sandrablake1696]

What's supporting the sink underneath holding it up until or while silicone is added

[@kellynottellin4002]

I'm buying some wood to make shims.

[@CWBush73]

Hey, some people install a bracket on the left and right under the sink attached to the inside wall. Then they take a ratcheting strap, hook it on the said brackets and tighten it up. The whole strap runs underneath the sink. Plumbers do this and you can too.

[@raymondgibbs3665]

Awesome video, thanks! Reinstalling mine after it fell out due to sub-standard mounting clips and poor quality silicone used by original builders. The Hercules Sink Harness looks like a winner - not sure if it's available in South Africa though - I may have to improvise with something similar.

[@jamescoudeyras4612]

Thanks for the video. I haven't been able to find how wide the Hercules system supports. Looks like a great option, especially for the price, and after searching the web. I am installing a 61" wide granite counter-top with two sinks. Is one Hercules enough? Or should I buy two? Or, just buy more wire? Thanks, again.

[@MaineDIYGuy]

James Coudeyras I would certainly go with 2, 1 harness setup on each sink. They dont have to be hooked up side to side you can also opt to go front to back.

[@baxtar1963]

I’ve built fish tanks and I’ve put in glass in high-rise buildings using nothing but structural grade silicone. I would think just the adhesive type silicone would be enough to hold the sink in? I have to do one coming up. Wish me luck.

[@kellynottellin4002]

Will this hold in a 1/2" thick cabinet framing? (both sides only 1/2" thick)

[@perrygoodheart8748]

So the strap remains attached and no other clips are used in this installation? I just watched another video and they use clamps along the sides? Which is best? I am having Granite installed and a new under-mount Kraus sink installed. I do not have the luxury or time to do this beforehand as the countertop is being delivered and installed but it is my understanding the install company IS NOT installing the sink for me? So I need them to create the holes necessary for this or the other installation when they cut the sink hole out? I will of course discuss this with them also but some idea beforehand would be useful. Thanks

[@furyvsblitzkrieg]

good video it's what I was looking for. do you have any tips on removing an old undermount sink? I'm planning on replacing ours and from what I see no harness. it looks like they used wooden braces to help support it. thanks

[@Scott-NCC1701]

Great Video! Good instructions. The Hercules harness gives a great mechanical bond. Thanks!

[@LilyH-h9o]

Awesome! Thank you! Can tell you know what you are talking about.

[@kellyshokunbi6481]

I was looking real hard to see what was holding up the sink while you put the silicone as the harness was not supporting it yet and it looked there is a ledge under the countertop that's it's resting on. For those without a helpful ledge the obvious thing to do is probably set it on something inside the cabinetI before tightening the harness but I was wondering if I'm missing something.

[@MaineDIYGuy]

This video is at the shop, normally at an installation the sink sits on the harness and someone else holds it still while silicone is applied. No ledge or anything else is necessary.

[@marvellstarks2434]

I like the tape idea

[@jacobrudy7218]

I had a quartz composite, under mount sink installed in a new Silestone counter top. Even though the sink manufacturer (Blanco) supplied fasteners and directions for installing them, the installer elected to screw scrap pieces of wood horizontally into the 2 cabinet ends, balance the sink on the wood scraps, apply silicone around the edges of the sink and set the counter top on top of the sink. The resulting sink is not centered in the opening and is also 3/16" below the counter top bottom surface. Also, since the installer screwed in the wood blocks with drywall screws horizontally into the cabinet sides, the screw heads are not accessible with the sink installed. I have never seen this installation technique used before. I am concerned that I cannot ever remove this sink due to the manner in which it is installed. Do you have any ideas or comments?

[@meganadams5320]

try to cut the screws between the wood BLK and your cabinet with a saw that has a metal cutting blade. The. Blocks should then drop out from under the sink once you cut through them.

[@Arnie_Liv]

Wish you fitted mine compared to the Muppets I got. Stuck it up with shiny granite cut offs which are now giving way. Even worse the sink was not sealed with silicone

[@riffert163]

I believe my cabinet walls are made of press broad. What is your opinion on press broad being a suitable material for attaching the support?

[@riffert163]

Bmmerguy ok. Spell check got me. ^broad^board^

[@rz4357]

Bmmerguy I am in the same situation and my call is that it will not work. My sink fell through completely, so i have room to work in there...I will be screwing and gluing (with construction adhesive) and 3/4 " piece of hardwood to the particle board. It only needs to be about 4" wide, so it wont even be seen.

[@MaineDIYGuy]

Bmmerguy Sorry for the delayed reply. I would not trust press board. It may work temporarily but it will not hold up for long.

[@triumfdula8830]

Is that wire removed then or it stays there?

[@craiglafler5581]

you didnt put in the video what support is put in place to keep the sink from coming loose! the silicone holds the sink in place? why not show how to mount the clips or whatever way youre keeping the sink supported? can you touch base on this? I had an undermount sink come loose, crack and then crack the granite! is there a stronger way to keep it in place? stone epoxy?

[@WickedG5150]

Lol. Good silicone, baby! Nothing else holds the sink.

[@MaineDIYGuy]

The harness holds the sink. Not that difficult to understand.

[@jeffreyparke1612]

Cinclips are easier to install and they support both the sink AND countertop. They also support far more weight.

[@MaineDIYGuy]

***** You can stand in the sink when the harness is properly installed. Not sure how much more weight then that anyone would want in their sink.

[@liliandiaz893]

Can you tell me why my kitchen sink has rust underneath? My kitchen is 2 years old and I don't know what to do because to change the sink it is impossible because is undermount the granite

[@davidleckie7469]

I had to remove my sink and need to install I new one. I have scraped off much of the old Silicone but there is a film. What would you recommend to clean this off so I can get a good seal to the granite, thank you.

[@MaineDIYGuy]

Denatured alcohol works good but you will need to reseal the stone after

[@AndrewSchmidbauer]

Question: What is actually supporting / holding the sink in place throughout this entire video?

[@MaineDIYGuy]

I have it sitting on the rails under the bench until it is suspended on the hercules harness.

[@ilyasym]

Good job sir

[@petrosrenovation4035]

Hey bud quick question when you go to tighten it down does the sink move and then you have to adjust it as well?

[@MaineDIYGuy]

Its easiest to have a 2nd person guiding the sink as you tighten it up. If the sink does not want to stay where you want it try adjusting the wire underneath to get it to stay where you want it.

[@GS-qx6cn]

Thank you for this video. For the average homeowner without a high-speed drill, water cutter, or materials and patience to through the whole epoxy-glue thing, this is a great alternative. It is rare we can have a better product that is easier to use for less money - the unicorn trifecta of home improvement! I can't believe Lowe's and Home Depot still don't carry this. I could get it online from Amazon Prime for $24, but bought it from the manufacturer's web site for $5 + $14 S&H for the same 2-day delivery as Prime. One caution: In the real world, it doesn't go in quite as easily as in the lab in this video. The sink is suspended for awhile until tightened, and is subject to tipping back and forth a bit and/or not exactly level from left to right while putting the caulk bead in. Think of a shoe box suspended by two strings running under it and you can picture what I meant. I had my wife hold the sink level while I caulked it, then went under and tightened it up. Once there, it's gold. I love this system! Thanks for sharing!

[@MaineDIYGuy]

+Glenn Smith I use the wires to hold it, spread them out until they hold the sink evenly and then just have someone balance it while you caulk it. Your welcome though on the vid!! Thanks for viewing and the comment! I appreciate it.

[@cyber0005]

thanks for this video it is exactly what i was looking for

[@MaineDIYGuy]

You are most welcome!

[@debra1070]

Very helpful video, thank you :0) Now I know why our sink has dropped twice NO Hercules sink harness is in place. How long would you wait for the silicone to cure before using the sink?

[@KrisH-bh9pq]

I am trying to figure out how to fix my sink. I have an under mount stainless steel sink that is only partially attached to my granite counter. We bought a recent reno. No one is willing to fix it. It fell and was caught by a few small pieces of wood. I have no desire to have the counter removed for repair because it has a seem. IKR! Can this be removed and we just go with an over mount? Csn our current sink be converted to a over mount? It has a disposal attached so it has addad weight. I know we lose the visual effect but in the long run I think we would be saving money on repairs. Suggestions?

[@MaineDIYGuy]

Kris Harden Where are you located? You can buy the Hercules sink harness online and follow these steps to re-install it. Just make sure you have a good putty knife to clean off the old silicone and some goo-gone and then just do as I show in this video and your all set!

[@KrisH-bh9pq]

MaineGraniteGuy no where near Maine. We are in North Al. Thanks for the feedback.

[@jackshaw7488]

You mean there is no under mount clips needed and Hercules thing will stay there forever. Right?

[@MaineDIYGuy]

Correct

[@getinthevanihavecandy]

Do you have a link for the Hercules product?

[@CMA1967]

Excellent question, shame it’s gone unanswered.

[@ryanpelz6964]

@@CMA1967 type Hercules Sink Harness into a search bar. How do you function in the world?

[@pinkyg6508]

What kind of Silicone? The people in Lowes direct you to the paint isle & sold me something that did not work, even went to Ace Hardware, sink ended up falling down again? What kind of Silicone please?

[@joelgarcia6307]

Did you remove the harness?

[@dawnsummers3228]

Should you let it cure for some time before you attach a large garbage disposal?

[@MaineDIYGuy]

Dawn Summers You should let it sit for a little bit maybe an hour for the exposed silicone around the rim to cure. Once thats set you can install the pig :)

[@armandoswoodshopcamarillo7255]

Hi I a have a under bathroom sink but my wife drop a cup an Brock how I can replace with that taken the granite counter top

[@MaineDIYGuy]

Armando Camarillo Undermount or drop in?

[@Anton-dl7me]

Hey, I wonder if the glue itself is enough to stick the sink? Are screws mandatory for such sink if disposer will be used?

[@MaineDIYGuy]

Silicone alone is not enough. When the sink is full of water and dishes it will fall through.

[@mrnotwhoyouthink1dontbothe11]

I have an identical sink secured with silicone only. Been great for 11 years absolutely no problems..silicone will hold that sink fill of water and cups and plates

[@AdamMargie4ever]

great video and explanation!

[@MaineDIYGuy]

Thank you sir!

[@IliyaHristov]

thank you for the diy video

[@giuseppegiannotta4217]

Nice job!

[@kimarent7115]

do you leave the hercules harness in place?

[@MaineDIYGuy]

+Kim Arent Yes you do, it can be removed once the silicone sets up but there is a chance the sink will fall once full of water and or dishes. As long as the harness is there the sink will never move.

[@tommiller6580]

Dont use regular silicone, you need silicone sealent which is much stronger, so beware of this . JUst make sure it's 100% silicone, there are silicones out there that are not 100%, please pay atention when buying a 10 ounce tube of this.

[@M.Godfrey]

Yeah CT1 in UK I use

[@MaineDIYGuy]

This is 100% silicone.

[@cataldoschiavuzzo282]

That's why I like the above sinks Better than below counters Sinks counter should hold Weight not silicone

[@MaineDIYGuy]

This comment doesn't make much sense. The silicone is only a seal. The harness holds the sink.

[@cataldoschiavuzzo282]

@@MaineDIYGuy even the harness with the small clips Still fighting gravity and water Weight in sink I'm just saying Above is better you can wash an Elephant in it and not worry about it falling down

[@MaineDIYGuy]

I'm 210 pounds and can stand in one of these sinks when properly installed. If you need more then that then idk what to say.

[@Markfamily11]

I'm putting new cabinets, I have currently a 33" top mounted sink on a 33" base cabinet, on my new kitchen we want an under mount sink also on a 33' cabinet base, how big of sink should I buy?

[@rickslock]

gabymarki well you probably already got your answer to your question or you already came up with the sink but 33 inch wide cabinets can only take a certain size Undermount sink and this is the one I'm using a Blanco Precis Undermount Granite Composite 29.75 in. Equal Double Bowl Kitchen Sink

[@hrlgram]

cool good job

[@user-yn3pp6dt9z]

Where do you buy the Hercules Sink Harness? Is it online ordering only?

[@MaineDIYGuy]

Jim Flanders Yes sir

[@ngmaf100]

Thank you

[@kwalmer]

First of all, thank you very much for this video. I am a plumber and my painter was standing on my counter to work on a window, misstepped and stood on the divider of the 2 bay sink which is now loose, to the point where the drain popped out from the disposal. it was epoxy-ed or maybe siliconed and has 4 corner screw/clips which i think saved him and the sink from landing in the cabinet. Should I remove the sink, clean everything up and remount it or call the granite people that pit it in? You don't do any work in Western Mass do you? (Half kidding) Also does that Hercules clip stay mounted forever or just till it's set?

[@MaineDIYGuy]

The hercules mount is permanent. Its more or less a reinforcement in addition to the silicone. I would personally remove the sink and yes clean all silicone around the rim and then follow the steps in this video. And to answer your question for the right amount of money a trip to Mass is plausible. :)

[@MaineDIYGuy]

kwalmer Your most welcome btw! Subscribe & share is all I ask :) I will be uploading more videos this summer.

[@TXRoeJogan]

I swear they just have a few dabs of liquid nail hold mine up, it worries me

[@MaineDIYGuy]

Hopefully not. You should be able to look around the inside edge and see if there's a good bead. Also look under the sink and see what is reinforcing it.

[@TXRoeJogan]

@@MaineDIYGuy I never saw any brackets so I wedged a 2 x 4 vertically up between the middle

[@WakeRunSleep]

Why so many thumbs down?

[@wildboyldc]

Then why did you waste your time watching it? Just to criticize? No problem with that. Why don't you make a video without a misleading title.

[@gnarlybark]

Seems like the typical thumbs up to thumbs down ratio is about 5 to 1, hard to tell why so many people give thumbs down votes on videos.

[@bioforcemech]

Silicone failed. Not my work but I had to retaliation. The damm thing

[@dylanjs]

thank you..

[@MaineDIYGuy]

dylan s absolutely!

[@RyanMattockpyro]

thanks! my sink fell this AM..

[@catinawilliams4645]

Ryan Mattock mine fell this morning and detached one of the pipes...water all over 🤦🏽‍♀️🤦🏽‍♀️🤦🏽‍♀️

[@AmericanWay72]

What’s with all that tape??? What a mess.

[@MaineDIYGuy]

Lol your comment speaks for itself.

[@wandaleatherbury8050]

just get to it

[@armandoswoodshopcamarillo7255]

Under Mount

[@RamAZHappuBang]

Good work Regards Rahul Mishra 09342048074 in.linkedin.com/pub/rahul-mishra-lion™-world-class-profestional/a/924/247/ twitter.com/AzamgarhAppu twitter.com/EaklvyaGlobal m.facebook.com/EaklvyaGlobalCreation INDIA Karnataka Bangalore

[@1Odama]

Actually, you do not install anything at all... Just a lot of bla bla bla in an inferior quality video! Modern talk without doing the walk!!!

[@wildboyldc]

OK, define install. Bla bla bla a more superior quality video and talk the talk, then we can critique your work. If he did not install that sink, what would you suggest he did?

[@MaineDIYGuy]

LOL correct I did not install I clearly explained how to do so. I will be waiting on your video link :)