When it comes to upgrading or replacing your kitchen sink tap, knowing the size of the tap hole is more important than most people realize. A small oversight in this detail can make your entire installation incompatible — especially when choosing between a regular cold tap or a hot and cold mixer.
Why Tap Hole Size Matters
Kitchen sinks typically come with pre-drilled tap holes, and these holes vary in diameter. The standard sizes are usually 25mm or 35mm, and the difference between them affects which taps you can install.
If Your Sink Hole is 25mm:
You won’t be able to install a Hot and Cold Mixer tap.
This smaller hole size is not designed to accommodate the fitting size and nut diameter required for mixers. Attempting to do so may cause damage or poor functionality.
If Your Sink Hole is 35mm:
You're in luck! A 35mm hole is compatible with:
-
Any Hot and Cold Mixer Tap
-
Standard Cold Water Taps
This gives you complete flexibility to choose the style and functionality you need.
Quick Tip Before You Buy:
Always check your existing sink’s tap hole diameter before purchasing or upgrading your tap. If you're unsure, consult with your sink manufacturer or installer to avoid surprises during installation.
Conclusion:
A simple measurement can save time, effort, and additional plumbing costs. Whether you're renovating or just upgrading, remember: tap compatibility starts with the right hole size.
