potty venting is an crucial aspect of your home base ’s sewer organization .
Installing drain and vent line in your bathroom is a home project that can be completed in a weekend . Before you start toilet discharge , have your plans approvedby an inspector and consider the following :
break yourplumbing setupfirst to ensure the project goes smoothly . You might line up that a joist is in the mode of a toilet bend , for example . If so , remove as much flooring as necessary to get at the framing . Cut the joist , put in a block objet d’art , and attach 2x4 cleats around the porta .
Credit: Emily Followill
What You’ll Need
Equipment / Tools
Materials
Instructions
Choose a Toilet Vent or Drain Configuration
choice 1 : Indirect association
If the john drain does not tie immediately to a vent , you must discover another agency to vent it . If the waste pipe furrow runs aside from the wall where you desire the vent , use a concentrate Y and a 45 - degree street cubitus to signal the vent-hole line toward the bulwark . The horizontal blowhole pipe runs properly next to the closet bend dexter .
Option 2 : Parallel
If the vent paries is parallel to the drainpipe pipe , establish a 45 - degree thin Y and a street cubitus to point toward the paries . You might need another elbow joint ( of any degree ) to position the vertical vent where you desire it .
Option 3 : Opposite Side
If the vent bulwark is opposite the drain stemma , use a shrink Y and a street elbow . The fittings can be pointed straight at the rampart or at an angle , as ask .
Align the Main Drain Line
set about with a length of 3 - inch organ pipe long enough toreach the basementor crawlspace . You might be able-bodied to cut it to the accurate length after it has been installed . Dry - convulsion a Y - fitting , a length of organ pipe , and a down in the mouth - dog vent fitting as shown , line up them precisely .
Insert the Assembly
enter the assembly down through the wall plates and temporarily drop anchor it . Make certain the Y - fitting is humbled enough to countenance for facility of the other drain lines . Once you are trusted of the configuration , rend up the meeting place and prime and glue the piece .
Place and Secure
Place the assembly back into the hole . assure the low - heel vent go to the framing with piping strap . Secure the pipage from below as well .
Align and Glue
Dry - fit a length of 3 - column inch tobacco pipe and a 4x3 scale down closet bend to the low - dog adjustment . hold that the center of the closet bend cakehole is the right distance from the rampart ( in most cases , 12½ inches from the frame to allow for ½-inch wallboard ) . mark that the pipe slopes ⅛ to ¼ inch down to the trying on . ( If necessary , you may reduce the top of the closet bend after the flooring has been supervene upon . ) Once you are sure the sewer drainpipe setup is right , note the alignment of the fittings and disassemble . Prime and paste the pieces . Support the closet bend with a strap .
Run Pipes
go a horizontal pipework to the subsist tube and piece the office needed for tie into it . All fittings should be Ys or drain elbows so wastewater can flow easily . contain the horizontal pipe so it ’s splatter at ⅛ to ¼ inch per foot and mark the exist tobacco pipe for thinning .
Assemble Fittings
If the existingpipe is cast - iron , take precaution to support it firmly before cut . In the setup read , a 4x3 Y connect to the house drain using no - hub fittings ( which should be used to tie to either cast atomic number 26 or BA ) . Once you are sure the try-on are correct and the horizontal pipe slopes right , make coalition First Baron Marks of Broughton . Disassemble the part , use undercoat and glue , and reassemble the pieces in decree , take off atthe existing drainage .
Mark and Cut
Slip length of 2 - inch pipe down through the holes drilled in the floor shell for the tub and sinkhole vents . Have a help hold the pipes plumb as you stigmatise the plate below for notching . Cut notch about an inch wider than the pipe to accommodate a meet .
Torun a blowhole pipage through the roof , first drill a mental testing trap to make certain you wo n’t relegate into any joists in the bonce ( illustration above , right ) . You might postulate to move the fix over a few in . The top plate can be doubled , entail you have to exercise through 3 inches . You mightneed to drillwith a trap saw first from below ( shown ) , then from above .
Dry-fit and Install
prune and dry - fit the horizontal drainpipe and the fittings for connecting the tub and the sinkhole drains . ( A 3 - inch horizontal tube is picture , but your inspector might let a 2 - inch pipe . ) infix a street elbow into the Y and hold the other art object in place to tick for cutting . Make indisputable the horizontal pipe slopes at a charge per unit of ⅛ to ¼ in per running fundament .
establish a tighten tee and a 45 - degree elbow ( or street elbow joint if you need to save way ) for both joints . If the pipage will be accessible , install a cleanout on the fitting for the tub ; otherwise install a drainpipe cubitus rather of a teeing ground .
How to Run aShower Drain : A 1½-inch drainage trap is often permitted for a exhibitioner , but a 2 - in bunker will ensure quick stream of water and will be less probable to clog ( double above , right ) . A shower has no waste - and - overflow assembly , so the harsh plumbing consist of a cemented snare that surface to the correct top for the cascade al-Qa’ida .
To plumbthe drain for the tub , teetotal - fit a 2 - inch trap onto a length of 2 - column inch organ pipe that is longer than it involve to be . Study the directions for the vat to determine precisely where the yap should be place . confine the trap - and - pipe meeting place in blank space and commemorate it for a cut . Dry - fit and crack that the horizontal pipe slopes correctly . Once all the parts are accurately assembled , draw alignment stain and prime and glue the pieces together .
Run a Vent Around an Obstruction (Optional)
If amedicine locker , windowpane , or other obstruction prevents you from running a vent directly up , you ’ll have to turn a nook for a short distance , then turn again to manoeuver upwardly . Horizontal runs should be at least 6 inch above the regular flood grade ( the rim ofa pass , for example ) .
Level and Drill
Yourplumbing codes might requirethe horizontal revent lines be as high-pitched as 54 inch above the finished floor , or at least 6 inch above the mending flood level ( the stage where pee will start to spill out ) . expend a carpenter ’s point to stigmatize the stud poker for drill holes . tend the horizontal venthole lines swill down toward the habitue at a rate of ⅛ to ¼ inch per hunt foot . Drill holes , deletion pipes , and plug in them in a dry running play using drain appointment .
Install a Sanitary Tee
Install a sanitary tee facing into the room for the sink trap . The idealistic tallness is usually 18 inches above the ruined flooring , but tick off your sink instructions to be sure . cementum a 1¼-inch cakehole transcriber into the tee . Install a piece of 1x6 blocking and anchor the organ pipe with a strap .
Connect to Other Pipes
In the attic , tap into a conveniently located vent pipe . trend the pipework and touch base a reductant tee fitting . Use no - hub accommodation to tie a polyvinyl chloride fitting to cast - iron or Bachelor of Arts pipe .
Check for Leaks
run away the new vent line over to the tee fitting . The pipes should slope gently away from the existing vent piping so water can journey downward . Your inspector might want you to admit a tee fitting to be used for examination : Once the drainage system is assembled and cement , plug the drain at the lower end . Pour water into it until all the drain and venthole pipes are filled with water . countenance the water to seat for a day tomake indisputable there are no leak .
Check Codes
Check local codes for the right room to install aroof jack . In most area , you will necessitate to install a 4 - inch organ pipe . Some areas set aside for a plastic pipe to extend out the roof ( show up ) ; in other field , a metallic element pipe is required . Purchase a roof jack with a rubber rim that will seal a 4 - inch pipe .
Cut Pipe and Hole
contract the 4 - inch pipe to rough the same angle as the roof slope and hold it plumb , its top equal the attic ceiling . Mark for the hole , which will be ellipse . Cut the mess using a drill and areciprocating byword .
Anchor Jack
You might call for to cut some roofing shingles back . fall away the jack under theroof shinglesat its upper one-half ; the scurvy half of the jack rest on top of shingles . Poke the release pipe up through the rubber flange . To anchor the jack , lift up some shingles and drive roofing nail . If any nail are not overlay by shingles , cover the heads with roof cement .
Frequently Asked Questions
A plumbing vent line work in tandem with your drains to regulate the air flow in your plumbing system . This assures waste and water flowing through pipes will drain out of your house .
Drain - waste - vent ( DWV ) pipescarry thriftlessness and water out of the theater without stochasticity or scent . To do this , there needs to be an air passageway behind the water . Vents extend from the drains up through the roof to provide that passage .
grant to the 2021 International Residence Code , a mansion only needs one vent line .
waste pipe line that are n’t the right way vented wo n’t be able-bodied to move waste out of your household efficaciously . This could leave inmalfunctioning pot , debilitate that overflow , and other plumbing issues that can get unpleasant olfactory perception and other problems . In addition , your pipes could begin to dry out and crack .
bathymetry lines do n’t have to go through the roof . However , they must go at least one metrical unit above the roof if installed through rampart .
The toilet could still flush with a clogged vent , but the drain will be inert . When there is a clog , you might also notice melody bubbles in the toilet pipe bowl , learn guggle sounds , or smell a strong olfactory property coming from the drainage .
Chapter 31 , Vents . International Residence Code .
