How to Test Underfloor Heating Before Screeding
Planning to screed over your new underfloor heating? Stop right there—because if there’s even a tiny leak, it’ll be hidden forever.
That’s why pressure testing your UFH system before screeding is absolutely essential.
Why Pressure Testing Matters
- Ensures there are no leaks or damage in the pipework
- Protects you from needing to rip up finished floors
- Validates correct installation before it’s too late
When to Test
- Before screed is poured
- After laying pipes and connecting the manifold
Ideally hold pressure for 24–48 hours
How to Perform a Pressure Test (Water UFH)
- Connect the system to a water source
- Pressurise to 6 bar using a testing pump
- Close the valves and monitor pressure for 24–48 hours
- Look for drops or leaks—none should occur
- Leave system pressurised during screeding to prevent pipe collapse
FAQs
Q: Can I skip this step for small systems?
A: Never. Even minor leaks cause major issues if encased in screed.
Q: Who performs the pressure test?
A: Your installer or plumber should carry this out professionally.
Don’t take chances with your screed.
Our team at Interior Screed Ltd ensures every system is fully tested and certified before we pour a drop of screed.
Get peace of mind—book your installation with us today.
