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A kitchen sink | Source: Getty Images
How to Vent a Kitchen Sink under a Window — a DIY Guide
By
Milla Sigaba
Feb 02, 202409:35 A.M.
Save a few dollars by following this helpful guide on how to vent a kitchen sink under a window by yourself for a perfectly functioning plumbing and drainage system in your home.
If you've ever noticed an unpleasant odor coming from your kitchen sink, it could be because the sink has not been vented. Adequate ventilation in the kitchen sink allows air to flow through the plumbing system, regulating pressure and preventing blockage.
Venting your kitchen sink also comes with many benefits, including releasing kitchen fumes and odors. Without the proper ventilation going through your kitchen sink, you not only risk having your home smell, but could also create a health hazardous environment.
A kitchen sunk under a window | Source: Getty Images
You could have a professional come in to vent your kitchen sink; however, that could set you back up to hundreds of dollars. Instead, utilize this helpful guide on how to vent a kitchen sink under a window for a properly working plumbing and drainage system.
How to Vent a Kitchen Sink Under a Window
What You'll Need:
- tape measure
- a 2x2x1.5-inch PVC sanitary T-fitting
- PVC primer
- drill
- PVC adhesive
- chalk line
- 1 pc 1/2-inch diameter PVC pipe
- pipe saw
- 1 pc 2-inch diameter PVC pipe
- 1 pc 3/4 inch hole bit
- PVC T-fitting
- PVC elbow fittings
- PVC joints
A kitchen sink under a window | Source: Getty Images
Directions:
1. As the name suggests, a T-fitting is an object shaped like a T and is designed to connect openings. Attach the PVC sanitary T-fitting to your flat sink drainpipe and connect it with the waste 2-inch drainpipe from the sink, which is usually in the wall right behind the sink.
Use PVC adhesive and primer when installing the PVC fitting for a strong hold.
2. Align the vent pipe and the T-fitting so that the T-fitting's top and the vent pipe spread upward, turn, and then horizontally extend through the wall studs to the point where it can vertically ascend again.
A man fixing a kitchen sink | Source: Getty Images
3. Cut a small upright piece of 1 1/2-inch PVC pipe using a pipe saw and link it to the opening on top of the sanitary T-fitting using PVC primer and adhesive.
The small piece should be about 2 inches, but measure the slope and distance of the flat pipe using a tape measure for an accurate measurement.
4. Draw a line on the wall studs' sides to signify the horizontal vent pipe slope and length with chalk. Then, drill one 5/8-inch hole on each stud between where the vent rises and the elbow. Remember to center the few holes that appear on the line.
Underneath a kitchen sink | Source: Getty Images
5. Cut a piece from the 1 ½-diameter inch pipe that reaches from the elbow to where the vent escalates. Then, insert the piece you cut through the holes you previously centered and stick it to the elbow. Fasten another elbow to the other side of the channel with its opening facing upward.
6. Connect an upright PVC vent pipe vertically until it reaches the attic to release all those unwanted gases from your kitchen. However, you might be required to drill through your ceiling for the pipe to pass through.
A man fixing a kitchen sink | Source: Getty Images
7. Fasten another PVC joint to the top of the outlet pipe in the attic, and horizontally run the pipe with the slope to connect it with your house's soil stack and main vent.
8. Use another PVC T-fitting to join the outlet pipe to the stack, and you are finished venting your kitchen sink.
Underneath a kitchen sink | Source: Getty Images
Now that you know how to vent a kitchen sink under a window, you can get a good night's sleep knowing you have a healthy and properly functioning plumbing and draining system. For more house maintenance, here is a helpful guide on cleaning the frosted glass in your home.
