Fix a dripping tap
Save £80–150 in 45 mins — no plumber needed
Most people call a plumber for this. You probably don't need to.
Last updated: February 2025
Only basic tools needed — most homes already have them.
Before you start
This fixes a tap that drips when fully closed.
Legal to DIY. Allowed in most rentals.
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Tools & materials
- ✓Adjustable spanner or spanner set— you probably already have one
- ✓Flat-head screwdriver— standard household tool
- !Replacement rubber washer— buy from any hardware shop
- !PTFE tape— buy from any hardware shop
Want everything in one go?
Prices shown on retailer sites. Always check current pricing before purchasing.
Turn off the water supply
Find the isolation valve under the sink and turn it 90 degrees until it sits across the pipe.
Most people get this done in under 5 minutes.
Where beginners go wrong
Not turning water off fully before starting.
Buying the wrong washer size.
Overtightening the packing nut.
Stop and call a plumber if...
The isolation valve will not turn
Water is coming from behind the wall
The tap body is cracked
Cost breakdown
Recommended starter kit
Five tools that cover most home repairs.
- →Adjustable spannerAmazon·Screwfix
- →Screwdriver setAmazon·Screwfix
- →PTFE tapeAmazon·Screwfix
- →Spirit levelAmazon·Screwfix
- →Tape measureAmazon·Screwfix
Want everything in one go? Get it on Amazon
What you just learned
You now understand how taps work, how isolation valves work, and how to replace washers. These skills transfer to replacing a full tap and fixing a running toilet.
Most people would pay a tradesperson for this.
⚠️ Watch out if you rent
Landlords are legally responsible for fixing dripping taps. Report it in writing first. If they don't act within 14 days, most tenancy agreements allow basic washer replacements — but document everything.
How long will this actually take me?
First time
45–60 mins
With experience
15–20 mins
Most of the time goes on finding and matching the right washer — take the old one to the shop.