How to Drain and Vent a Kitchen | This Old House

[@WillN2Go1]

These videos are just so intelligent, well presented and practical. As an old guy who's worked every aspect of construction these videos are a refresher, but I always learn something new from them. Well done This Old House.

[@larrymoore6640]

What I like about this video is how Richard shows and explains the vent system in this area of the house.

[@ovidiuciuparu6421]

He is explaining well but i will have to disagree with the vent for the island. I don’t think that is needed!

[@scotttovey]

@@ovidiuciuparu6421 It's not about what you think is needed. It's about what the code dictates that is mandated. That's the difference between a credible contractor, and a fly by night operator that takes your money and runs. You would be a fly by night operator that no one should trust.

[@johnlebzelter4208]

@@ovidiuciuparu6421 are you a plumber?

[@KitchenerLeslie2]

That’s the whole video wacko.

[@larrymoore6640]

@@scotttovey Scott I sure know what you mean about contractors that think they it all. I fired two on a remodel. One did it his way after I showed him and proofed it.

[@SportsFan0027]

Exquisite explanation. I spotted the potential problem of a blockage quickly but didn’t know how to solve it. Richard explains so well. Nice vid

[@tjtampa214]

Love knowing how that stuff works.

[@acerjuglans383]

@@Kevin-mp5of You're still alive?

[@alexandrebernier5508]

Nice system that loop. I love it!

[@tsavoca203]

Where I’m at (Cincinnati) clean outs are required under the sink and at the wall. I guess not needed here but I like it as a cheap way to get piece of mind; allows you to quickly clear the vent portion from either direction in case of a blockage.

[@coryh8888]

the east coast seems to be decades behind most of the country. but not as bad as the south. probly dont even have codes there lol

[@langer24106]

@@coryh8888 I’ve done work here in WV and the inspector doesn’t even come to check the work

[@prestonlane6253]

@@coryh8888, whaddya expect. We just got runnin' water an' lektricity to the outhouse last week.

[@DDunc1020]

@@prestonlane6253 and all dem teef but no toofbrush

[@scotttovey]

It's almost as though Richard is intentionally training plumbers with these short tutorials.

[@patmadix172]

Good old loop vent

[@dosadoodle]

This is such a clever solution for that problem. It also seems like it could be useful for a sink below a window, and if that bow is run above the top of the sink / countertop height, then water cannot back up to the top of the bow -- the sink would overflow before that happens. (I'm here looking for the best solution to my sink below a window venting problem. :))

[@MyFortressConstruction]

The majority of all houses that have a sink window, still run the vent horizontally until they can go up around the window. It's possible that you have an alcove sink with walls on three sides and windows covering every wall, but with a little planning you could still leave a few inches for a pipe to go vertical before the corner. This type of island vent is still not preferred as you could get back up at the wye above the main drain and not have the ventilation you need. Another option is an AAV, but those aren't allowed in most, if not all, municipalities.

[@sontien6402]

Than you!!! Sir! Practical, Intelligent

[@exportedafrican]

That’s so complex I’m starting to think about going back to an outhouse.

[@jeanfrancois7470]

Thank you good job kpk

[@sekritskworl-sekrit_studios]

VERY informative!

[@fivebelow7389]

Wow moment!

[@blobscott]

The top of the loop vent should be assembled with two 45 degree bends with a single 90 degree at the top (i.e. between the two 45s). This is so there is no horizontal section that could hold any standing water/gunk should the vent flood. What is shown here has two 90s connected with a short straight stub. Probably not a big deal, but not really the officially correct way - and may not pass code in some areas.

[@Mister_Belvidere]

You're right. It's a small detail, but it isn't up to code where I live.

[@kelvinp7899]

No cheater vent here, great info,

[@DiffEQ]

"cheater"? They have their application and do precisely what they need to do. They are also code compliant in many municipalities. It's not a cheat... it's a solution.

[@mrpickle219]

Island drain is supposed to have a clean out and the foot vent also. The loop vent should have a 45 ftg in between the two 90's.

[@maydanlex]

Informative.

[@Btu555]

For a small house 900sf2 with one bath and laundry in the garage, can I tie all the vents in the attic to a single vent 3" and direct it out to the highest point of the side of the house so there will be no penetration through the roof since I am planning on installing metal roof?

[@santiagosanchez2865]

Good content !!!

[@JtotheRizzo]

What kind of PEX piping was that? It seemed more flexible than Uponor (Pex-A) or Zurn (Pex-B)

[@vinamato103]

I came to the comments looking for the same info.

[@HaploBartow]

He's just a stout dude, flexing it with a little elbow grease.

[@MyFortressConstruction]

It looks like Pex-A. It's usually more shiny, though not always, and it's more flexible.

[@jaredboice231]

clear as mud....thank you richard

[@DiffEQ]

He was, in fact, very clear. Sorry you're having a hard time with it, anyway.

[@TampaMaximumMike]

Note to self, never have an island sink.

[@anthonyromano8565]

You can cheat and hide a one way vent. Not code but what they dont know wont hurt them.

[@edgundlach2811]

One of the problems that can come up when trying to use cheater vents. If it's not code, and you go to sell the house, good chance the home inspector will see it. Then buyers could use it for their advantage. You certainly do not want to bury that in the island wall.

[@anthonyromano8565]

@@edgundlach2811 Some people keep there houses for ever and will them to there kids. While renting. These are types who do that sort of thing.

[@edgundlach2811]

@Anthony romano Well you are correct there.

[@edgundlach2811]

I have no clue how to respond to get a name to become a link, or get it blue. Or whatever it does. Lol

[@realestateservicessaleshea99]

Relief vent &drain!🤔👍🏻🍺

[@mrswolls]

Is pex becoming the norm for residential plumbing?

[@coryh8888]

has been for at least 15+ yrs in minnesota. most plumbing companies use expansion style connections. less common is what u see here, that is a crimp style connection. and a few ghetto companies use cpvc.

[@ابراهيمالجبوري-خ7ق]

Expansion is the best way to go because it works with the packs as the ring then compresses and the packs wants to shrink a crimp rings simply putting pressure on the outside and closing it’s not very effective long-term

[@DiffEQ]

@@coryh8888 Ghetto? CPVC has it's applications and is not inferior to PEX. SMH

[@DiffEQ]

About 60% of new construction is using PEX. Cory doesn't even know that "expansion style" connectors means it's PEX-A. Ugh.

[@adamcronin8846]

Is that a proper loop vent in your state? Not mine 2 45’s and a 90

[@josevillagomez2567]

Agreed Texas

[@andrewrodriguez8492]

So if a vent is lower than the flood level of a fixture, the vent will completely fill up or only fill up to that level?

[@gman69455]

The water would spill into the main vent stack it’s tied into instead of coming up the drain as a visual for clog. If the vent ties an upper and lower floor vent it will come out of downstairs plumbing. Not a fun time.

[@geoffh1]

Vent is not permitted below flood level of the fixture. This should have been run as a combination waste/vent to the wall.

[@SteppesoftheLevant]

NEEEEEEEERDS!

[@BC-hr2of]

discuss an alternate to the island vent … Oatey manufactures a ‘sure-vent’ as an alternate .. please demonstrate … thanks.

[@Vanilla_Icecream1231]

Old construction it’s okay but for new construction like this it’s no allowed or your not supposed to use it

[@BC-hr2of]

@@Vanilla_Icecream1231 … up to local jurisdiction 🤔 … you push hard enough it’ll be allowed 😏 …. but a relatively little discussed system that can work 🤠

[@DiffEQ]

Uhm... they're not in your employ and they don't take requests. How about YOU look it up? SMH

[@marqueemark5917]

where are our cleanouts? rookies!

[@cjean398]

the kitchen sink venting threw me off a little why not run a studor vent?, instead of this horse shoe bend?, also this makes it incredibly hard for a plumber in the near future to snake that kitchen sink if it ever does get blocked up, I see no santee cleanout installed anywhere on this kitchen sink line, which would make for a disastrous and problematic fix in the near future, in my opinion every fixture or drain in a modern home should have a cleanout installed.

[@21albertodelgado]

Arent there (east coast) indirect drains code for kitchen sinks? Or is that just code for commercial applications?

[@TheGgbk]

I've hired a number of plumbers - I don't think most of them understand venting very well (I don't either). I think I know only one out of like 10 I,ve tried that I would trust to properly vent new pipes (they all only want to install new pipes they aren't interested in repairing anything)

[@JackTheAwesomeKnot]

They want to install new pipes because of money and liability.

[@bartmormino907]

Should put a 2" cleanout on the vent, you have no way to clean the vent. Look in the code book on a loop vent, it shows the cleanout.

[@grumpy1962R]

How far can the kitchen sink waste run to the main vent

[@bgraf1756]

Why couldn't you just add an air admittance valve under the island?

[@cliftonwinkler1460]

agree saved so much time and money on the project

[@Mike__B]

Some places it's "illegal" to use them. I think Maine is one of those places, I know California is although ironically you can swing by the big box home improvement store and buy them just fine.

[@hacksaw]

AAV needs special permission in MA cuz it needs access to be serviced. Bow vent is code preferred, especially on a wide open renovation

[@coryh8888]

because times have changed since the 1970s and its not a trailer home. all the dwv should be sealed with proper venting that exits out the roof

[@kylepost4]

Some municipalities don't allow them, other ones require special permission to use ones, and most professional plumbers don't want to install them because they can break.

[@rogerrybicki]

4:11

[@timc1341]

Installing the p trap before the island and sink are installed? Ballsy!

[@aservantofYeshua]

Why not just use a studor vent instead of all that extra piping for a bow vent?

[@fivebelow7389]

Plan own a home this help me

[@lucashack5318]

Why not use a studer vent on the island sink?

[@blobscott]

Not legal in certain states... Like MA

[@BWIL2515]

Stopher vent?

[@YouToobeism]

@This Old House, nice presentation. Seems to be missing the clean-out fitting in the air vent line under the sink. What is the homeowner to do if the short section of the vent pipe between the flooring and the common drain pipe becomes blocked? The ensuing air lock will fowl the normal draining of the sink. Add to that the vigorous action of a garbage disposal and the stuff coming up in the sink can look disgusting. Especially if during the prep for a dinner party with the hubby's boss.

[@merlebickford3519]

Why wouldn't you just use an in line vent on the island sink?

[@forme3581]

why not use a studor vent for the island sink

[@carultch]

Usually not allowed for new construction.

[@cesarmoreno5996]

how durable is the RED and BLUE hose for water ?..... I visited a home under construction, and the builder SAID: these hoses should be TROUBLE-FREE for 20 years... What happens then ? A mandatory need to redo all of the plumbing after 20 years.? Then he SAID: you will probably move before the 20 yrs are up, so dont worry...So how durable are the hoses ? ?

[@DDunc1020]

Its not called a hose, its a pipe. They are very durable piping, the fittings on the other hand might be an issue in the future. In cold weather in MA you could have them crack, in FL in the heat you could have them degrade from the heat if out in the sunlight. It all depends on the installation doing it the right way. Copper still corrodes, cpvc still cracks. Nothing will last forever. The best answer to the pex after all that said above is, the less fittings the better.

[@usbigdaddy]

Wouldn't an auto vent work for the island?

[@Vanilla_Icecream1231]

Some places I know here in Canada Ontario when your building new you can’t put mechanical vent if it’s something old than you have no choise but to use a mechanical vent

[@usbigdaddy]

@@Vanilla_Icecream1231 Is it an option to use a wet vent

[@Vanilla_Icecream1231]

@@usbigdaddy I don't really understand how you would wet vent a island I'm not plumber but I've just learned all of this and built my own wash room in my house and I did went vent but you still need a pipe going up

[@usbigdaddy]

@@Vanilla_Icecream1231 It's possible it too much to explain in this format

[@montanalivin8248]

Where is your foot vent?

[@Skateforlifelad]

Forget looking at cabinet and sink layout just use the actual sink for reference

[@shenoyglobal]

Where does Richard do his business.. i would love to hire him if he is in florida

[@tubeonline629]

This kind of problems are not solved by your average plumber are they?

[@shugmagnolia188]

Oh man. There's so much to plumbing. I guess I should call a pro. Ugh

[@sadsciuidae3425]

another example when a trade installs their stuff all over the house cutting holes everywhere and anywhere often for no known reason.!!!

[@zachadams5022]

Should’ve showed the loop vent going through 7 joist instead of the same bay to the wall smh very very rarely does this venting in this video happen

[@fatherfrias4481]

no clean out on the kitchen sink its a fail in california.

[@Ligmanuts1]

He could of just ran 1 two inch line for island and used a studor vent

[@carultch]

It is common that Studor vents are not allowed on new construction. The pitfall of a Studor vent is that the home-owner doesn't know what they even are, and doesn't know to inspect them and replace them. They are good for a retrofit, because it is better than no vent at all, but not good if the home owner doesn't even know they exist. Plumbing vents in new construction usually need to be done right the first time, so they don't depend on moving parts that require maintenance.

[@YouToobeism]

@Jay M said, a studor vent is better than no vent, but consider that either vent is venting a waste pipe that connects to toilets as well as sinks. Do you really want that vent just under (or worse) atop your kitchen sink?

[@joseibarra6658]

i have used stutter vents . the y last for years .

[@skiingslasher1991]

Please add more technical information. You could easily have a 30min episode about venting!

[@DiffEQ]

They're not taking requests and you have THE ENTIRE INTERNET to research this. Ugh.

[@skiingslasher1991]

@@DiffEQ you should be called grumpy engineer

[@steverone7623]

I love TOH but how many times will they show this video

[@ianbailey6423]

Isn’t the middle pipe a dry vent ? Those are illegal here

[@DiffEQ]

Not sure where "here" is, but I don't know of any code that specifically forbids a dry vent as that is sometimes the only option. I do know of code where wet vents are clearly prohibitive, however. Your lack of detail and the fact that you missed it vents into the waste stack and there is a second floor is telling. So.... it can't even be assumed to be dry vented even if your suggestion of code violation was valid.

[@ronaldupchurch9752]

Holds more dodo than smaller ones

[@travisdavis3974]

Most codes allow air admittance values

[@carultch]

For a retrofit yes, but new construction usually needs to be done right the first time, without relying on them.

[@jamjestlx]

Why do You need so much vent? We don't have that in europe.

[@DiffEQ]

You also don't have water tanks, front yards, etc. What's your point? Do you not understand the safety and physics of venting anything connected to the waste stack/line? Then look it up!

[@johnkim1656]

That explains why so many places in europe smell like sewage!

[@Pops2]

Looks relatively inexpensive.😅

[@silverfeathered1]

I know very little about plumbing, and not even sure how I ended up watching this video... ... But could someone tell me why these maze of pipes are always a thousand connected parts? It seems intuitive to me that having the truck fitted with max length pipes to be cut and heat bent would be cheaper, easier and have less failure points and turbulence.

[@silverfeathered1]

I guess it's a "trade secret". 😂

[@LuminairPrime]

Those drain pipes are much too strong to be "heat bent", they don't fail, and the turbulence doesn't matter because they're drains. Cutting and gluing a pipe is cheap and requires the skill of a child, so errors are rare.

[@ryandiedrich6317]

This is why plumbers are worth $80/hour. NO way your do-it-yourselfer would do this correctly.

[@Vanilla_Icecream1231]

Lol we made our own washroom and it’s wet vented

[@503chapka]

Fail inspection I’ll sink not properly work. Kitchen sink have to be 2”clean out. you off😅 YOU NOT PLUMBER

[@caymanisland6814]

I can’t take this guy Kevin.

[@leelomoe]

No purple primer at glue joints? Wouldn't pass inspection here.

[@MandoFettOG]

Do we know that it's been glued yet?

[@leelomoe]

@@MandoFettOG 2:26

[@DiffEQ]

And where is "here", genius? Apparently, where they are it's just fine. Do you think they don't have inspectors or experience? UGH Shut up

[@caymanisland6814]

Where’s your useless tool belt Kevin.

[@jaimedpcaus1]

For an audience that does not do this for a living, this is way too fast and needs rudimentary more clarification. Thanks but no thanks...

[@ovidiuciuparu6421]

Whow wow wow! Slow down a little! Why do you need a vent to the island? You guys are overthinking this! Is not rocket science! For sure you don’t need a vent for that island!

[@ElectricGears]

Vents are required at all fixtures, otherwise the traps that keeps sewer gasses from rising out of the drains do not work properly.

[@DiffEQ]

How about YOU slow down? Of course a vent is required. And the fact that you're still using "rocket science" as a barometer shows your age. There are things MUCH more difficult than rocket science. In fact, rocket science is rather mundane in the 21st century.