Last Updated: February 25, 2026 — Reviewed by Brian Hayes, Licensed Master Plumber
Slow-draining and clogged sinks are needless to say, more than a minor inconvenience—but never fear, Hayes plumbing in Durham region has your back again with how to unclog your sink’s P-trap.
While we will gladly come fix it for you, but there are a few things you can do yourself, which is why we’ve put together these easy 6-step instructions on how to unclog your sink’s P-trap yourself:
1. Get your Tools and Space Ready
The tools to unclog a sink are simple, a bucket or bowl, towel (preferably one you aren’t emotionally-attached to) and a screw driver. To prepare your space, empty out everything from under the sink and ensure you have enough clear space in front of the sink to work.
2. Find the P-Trap
The P-trap is the U- or P-shaped pipe (depending on your perspective) that connects directly to your sink. The P-trap is designed to prevent a backflow into your sink and to prevent sewer gases from seeping out of your pipes into your kitchen or bathroom. It’s simple purpose is to ‘trap’ things (hence the name). Place your bucket or bowl beneath the P-trap to prevent the leakage from emptying on your floor, then begin unscrewing/unthreading the caps that don either side of the pipe. If you haven’t removed the P-trap before they may be tight, which requires the addition of a little lubricant.
3. Be Ready for the Rush
Clogs cause a backup of water (and anything else you’ve put down your sink) so be ready for a rush of water and other stuff to flood out of the trap and fill the properly-positioned bucket.
4. Clean It
Clean the removed piece of piping and the nearby sections that are accessible.
5. Reattach
Once the P-trap and nearby piping is clear of whatever was clogging it you can reattach it in the same way you detached it.
6. Test It
Once you’ve firmly reattached the P-trap, test to see that the sink is indeed draining properly.
Once you have completed all the above—voila! You’ve learned how to unclog your sink’s p-trap.
Problems After Unclogging your Sink’s P-Trap?
If after cleaning the P-trap you are still experiencing problems—call us, your experts in plumbing in Durham region and surrounding areas. There may be a root in the line or another problem further down that pipe that requires snaking, or pipe inspection or replacement. Do not attempt to correct problems yourself as you may cause further damage to your plumbing.
Additional Resources
Frequently Asked Questions
When should I call a plumber for unclog drain?
You should call a licensed plumber for unclog drain when the issue persists after basic troubleshooting, involves water pressure changes, or requires access to pipes behind walls. Hayes Plumbing serves Oshawa, Ajax, Whitby, Clarington, and Pickering in Durham Region.
How much does unclog drain cost in Durham Region?
The cost of unclog drain in Durham Region depends on the complexity of the job and parts required. Hayes Plumbing provides upfront pricing before beginning any work so there are no surprises.
Should I try DIY or hire a professional for unclog drain?
While minor issues can sometimes be addressed with DIY methods, unclog drain often requires a licensed plumber to ensure the work meets Ontario plumbing code. Hayes Plumbing is fully licensed, WSIB certified, and BBB accredited in Oshawa.
Need help with plumbing repairs or installations? Hayes Plumbing & Bathroom Renovations serves Oshawa, Ajax, Whitby, Clarington, and Pickering. Contact us or call (905) 576-3043 for a free estimate.
