Clothes Dryer, Bath Fan, and Kitchen Exhaust Systems - Code changes and installation success
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- Опубликовано: 20 дек 2024
- IRC Chapter 15 details the exhaust systems for these areas but how do you handle the new changes in the 2018 IRC, and even the 2015 IRC? This video on Termination Locations, Duct Installations, Allowable Duct Length, Duct Sealing, Fastening and more, will help you get it right and pass inspection every time. Use this link to access a PDF cheat sheet of the specific construction code info presented in the video: www.burgess-in...
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The information you have given is extremely helpful. Your no-nonsense presentation style is greatly appreciated. I also see that you attempt to fully answer questions from those people who add them to their comments. I do hope you continue your youtube endeavors and wish you much success.
My head hurts and I am extremely technical. Great Job explaining the code requirements. I realize they are for safety, but it is very difficult to stay updated and not break a law before getting out of bed these days.
Thank you for this comprehensive video. I was having issues with a dryer in a new house and there were multiple things in this video that I found after getting in the attic. I am adding a booster fan to correct the problem. Thank you again !
Very useful. Learning this I purchase new dryer vents never that I'll have to take that screen off.
Forget the screws to join the tubing, you can’t get screws to meet that spec even if you use the malco brand. Even pop rivets will collect lint. Oh even bath vents will collect lint.
Size the terminations to the pipe diameter for example I’m getting rid of all flex and upgrading to 4” rigid aluminum. The hood I’m using is a Broan Nutone 636. Careful with your selection making sure the thing is serviceable.
I would highly recommend that the piping is insulated in attic spaces
Your statement that a length reduction of 15 feet for every 90 is incorrect at 7:07. You correctly stated that it's a 5 foot reduction for every 90 at 2:30
Thanks for the information. Will be sharing the video on my social media.
Thank you for posting this video! How does this information apply to a condominium in the middle of three floors
If one or all of the exhaust appliances are on at once, Is make up air necessary ? I would think so. Thoughts please 🙏
Good info. Is it ok to direct bathroom exhaust fan to the house soffit instead of the roof? I am afraid that warm air will be recirculated back into the attic which cause molding later.
I in the 2015 IRC, section M1501.1 states that "the air removed by every mechanical exhaust system shall be discharged to the outdoors in accordance with Section M1506.2. Air shall not be exhausted into an attic, soffit, ridge vent or crawl space." Note that it specifically prohibits the soffit. These ducts should connect directly to their terminals. This connection will prevent the exhaust from remaining in the attic.
@@Burgess-Inc If it is not vented soffit and not near a window then I would think it would be ok.
Running a dryer vent from basement laundry room up 6 feet to 90° angle then extending 25 ft of ridged duct under a deck. Question - how do I prevent critters from entering duct if I can't put a screen on it?
get a vent with a damper
Can I put the flex kitchen vent on the úrico
I'm confused the way this code is written. If all your exhaust ducts from bathrooms and kitchen are somewhere on your roof and your house is already situated minimum 5' setback from property line than what's point of specifying exhaust duct terminations to be 3' from property line. Wouldn't it automatically be within 3' since it's on your roof and your house is at least 5' from side setbacks? Please help, I have this comment on my plans and it's frustrating and feel like an overkill.
Can I add an exhaust fan duct to an existing dryer ventilation duct?
@Burgess In an apartment building are the bathroom vents connected to downstairs apartments?. Or each unit above and below? I got really bad smoker problem coming from downstairs neighbors. They light up all day long and smells like ground zero comes through from my bathroom vent. I've blocked the vent with whatever I could
The vents should be independantly connected. This is also a fire code requirements to keep a fire spreading quickly from a lower floor to an upper floor. However the floors are not air tight constructions in older units and it could be seeping through the floors. The only way to find out on completed construction would be to have access to the lower unit and use a fog machine and run it through the vent to see if anything is coming into your vent. Then if it showed it was would they repair it? The cost to re-route 2 exhaust vents to the roof would be extremely expensive and more likely more cost effective to relocate you. Check with the state that regulates commercial housing and see what your rights are. There maybe something there about obnoxious odors and the the landlord being responsible to offer a solution.
question, can you vent your bathroom exhaust into the stack vent pipe
No, first it is illegal and second the gases will come back into the houses. I know from experience.
@@dtm8073 that’s what I thought thank you for confirmation
I just ordered and received an item called the Dryer Jack. It is for my roof to vent my dryer. I also ordered the latest up to code dryer ducting. Right now the ducting runs behind my dryer behind and up the wall into my attic. It has been like that for many years with no issues. I now know that is not up to code and will run it through the roof. My question is are you familiar with the Dryer Jack. It says it is up to or exceeds code in the you tube video. Just trying to do this right the first time, thanks.
Can an in-line fan be a substitute for a fan in a range hood? For example I have a H36HQS Thermador range hood and there are no replacements at this point that I can find.
what you said is some good information what is the guidelines for the houses that are duplexes for running duck work for kitchen hoods that are on walls that are back to back 2A peek roof what is the code for running 6 inch galvanized steel pipe through an attic to a roof vent from the back door to stoves are 25 feet away the peak roof may make the distance a little shorter but what is the national code compared to the local codes
Thanks for the great info! Couple questions;
Can I run flexible ducting in a ceiling or does it have to be rigid?
Do I have to have the vent hook up box in the wall behind the dryer?
See below for answers. I hope this is helpful.
Can I run flexible ducting in a ceiling or does it have to be rigid? Flex duct would not meet the code's requirement for duct construction. IRC M1502.4.1 says, "Exhaust ducts shall have a smooth interior finish and be constructed of metal having a minimum thickness of 0.0157 inches (0.3950 mm) (No. 28 gage). The duct shall be 4 inches (102 mm) nominal in diameter."
Do I have to have the vent hook up box in the wall behind the dryer? No, there is not requirement for the box or its location.
What was IRC code in 2007-2008 for the clearance between dryer vent & the intake of a direct-vent furnace? Was there one included? or was it based on manufacture?
Was it 3' ? or 10' ?
In 2008 my if my dryer vent was installed 5' below & 5' to the side of a bayvent200B (intake/exhaust combo vent) would that have been correct install for the date?
Is there diagonal accommodation? if you are 5' below & 5' to the side?
, no
I cannot find anything in the 2015 or 2018 IRC pertaining to the requirement of backdraft dampers for Bathroom exhaust fans terminations. Bathroom fans have a integrated "flapper" which essentially servers as a backdraft damper (although poorly implemented, since they tend not to provided a complete seal). Could you provide the code section in 2018 (or 2015 IRC) regarding the requirement for backdraft dampers at the termination point.
I have seen many installation where the roof jacks have a screens only, no backdraft dampers.
Is it ok to exhaust your bathroom using flex duct directly out of an existing box roof vent on my roof?
No, flex duct is not smooth wall as required. The only place flex duct is allowed for dryers is the transition duct between the dryer and the dryer box on the outside of the wall and has to be as short as possible. AC/Heat duct work is not exhaust duct therefore it can be used as it has it's own requirements for sizing and placement.
@@jon10231 Jon, thanks but I was talking about a bathroom exhaust fan, exhausting out the roof not a clothes dryer.
You look like every service manager 😂
For those devices you would purchase for exhaust venting and sq ft requirements, where does the supplier come into play? Isn't it their responsibility to ONLY carry APPROVED materials and devices?
Suppliers sell what the people what to buy. DIY by homeowners are not code regulated. The box stores sell all kinds of stuff that is not code compliant for ducting, exhaust, electrical, pluming and structural. These are used for repairs and repairs are excepted from code requirements as long as the repair doe not lessen the original code requirements. That is why DIY and handymen can do work that is not code compliant but a home builder is subject to the latest code requirements adopted by that jurisdiction.
For the 2015 irc are you allow to have your bathroom exhaust going to the soffit? Or does it have to go straight up
Im also waiting for his reply for your querry?
Cannot terminate to a vented soffit, or closer than 3' above a window. This would allow the exhaust to enter the attic or the home. If it is terminated at the soffit that is not vented and not a window and more than 5' from the property line and has damper then you should be good to go.
Well there goes my laundry room 😅
Interesting, inspector in my project said "no screw in joins, only tape"
Your inspector was incorrect if 2018 IRC is in effect in your jurisdiction. Paragraph 1502.4.2 "Exhaust duct joints shall be sealed in accordance with Section M1601.4.1 and shall be mechanically fastened. Ducts shall not be joined with screws or similar fasteners that protrude more than 1/8 inch into the inside of the duct.
Is code like this a national standard ?
There is a international (International Code Council) code. Residential housing falls under the IRC for up to 4 dwelling units 3 stories above grade. Then States and local and add to or amend from the ICC code. The ICC is also referred to the national building code, but is used in other countries also. The local building official has the final say in what code, version and interruption of the code.
Bath fan 100 cfm Hood fan 400 cfm Clothes dryer 1000 cfm. AC & heat in a home sucked out of the house with no makeup air. YEP...there is a real prob there.
15ft for a 90? Wasn't it previously 5ft?
for 6" flex i think he said. so ridged pipe i think its 5' for a 90*.
@@neckofthewoods24 No flex for dryer exhaust.
5' for each 90 in smooth exhaust duct and 2 1/5 for each 45 degree. he mis -spoke.
@@jon10231 well you have to at least at the dryer to first section of solid pipe. And I used semi solid, not the cheap coil paper type stuff.
This video just pissed me off. All these damn rules, my god
Burn your house down then
@@blindhelicopterpilot well lets not create total chaos. A good fist pound on a table should suffice lol
@@blindhelicopterpilot Truthfully though, a lot of these rules come from real accidents/issues/fires...there's a lot, yes but I try to remember that when getting frustrated with it.
The many rules are to build better homes that withstand wind storms, resist fires and are more energy efficient. The rules don't add much to the overall costs, the absurd markup on building materials and ridiculously high markup by builders and the long term mortgages is where the insane costs are coming from.ght, so m