Why does underfloor heating need commissioning?
Commissioning confirms the pipework is sound, the loops are balanced and the controls are set correctly, so the system delivers even, efficient heating rather than hot and cold spots.
Manufacturer & BS EN 1264
Underfloor Heating Commissioning Certificate
An underfloor heating commissioning certificate records that a wet underfloor heating system has been pressure tested, balanced and commissioned correctly before handover. It confirms the loops, manifold and controls are set up to deliver even, efficient heating.
Wet systems need careful commissioning, including a pressure test of the pipework, balancing of the loop flow rates at the manifold and a controlled screed drying and warm-up process. Skipping these steps can lead to poor performance or damage to the screed.
TradePlanr lets you record the pressure test, flow rates, manifold settings and screed commissioning on site and produce a PDF certificate, so the whole process is documented for the customer.
Issue this certificate from your phone
TradePlanr generates this and 35+ other gas, electrical, oil, plumbing and renewables certificates as proper PDFs — filled on site, signed on screen and stored against the job. Works even with no signal. Free to download.
What it covers
- Property details plus number of zones and loops installed
- Pipework pressure test pressure, duration and result
- Loop flow rates and balancing settings at the manifold
- Manifold, pump and blending valve settings
- Screed drying and controlled warm-up commissioning where applicable
- Thermostat and control configuration for each zone
- Installer details and dated sign-off
When it's required
A commissioning certificate should be completed whenever a wet underfloor heating system is installed and brought into service. It is the record that the system was pressure tested and balanced correctly.
Where the pipework is embedded in screed, a controlled screed drying and warm-up procedure is needed before the system is used normally, and the certificate records that this was carried out.
The completed certificate is handed to the customer and kept with the system documentation, and may support warranty cover and future servicing.
How to issue it in TradePlanr
- 1
Enter system and zone details
Record the property, the number of zones and loops and the manifold arrangement, so the certificate reflects the installed system.
- 2
Record the pressure test
Log the test pressure, the duration held and the result, confirming the pipework is sound before the floor finish or screed is applied.
- 3
Set flow rates and manifold balancing
Record the loop flow rates, balancing settings, pump and blending valve settings and the zone controls, confirming the system is balanced for even heat.
- 4
Sign and store the PDF
Capture the signature, generate the PDF commissioning certificate and store it against the job, ready to hand over with the screed warm-up guidance.
Frequently asked questions
What is loop balancing?
Balancing sets the flow rate through each loop at the manifold so that every zone receives the right amount of heat. It is a key part of commissioning a wet underfloor system.
Why is screed drying important?
Where pipework is set in screed, a controlled drying and warm-up process avoids cracking and damage. The certificate records that the correct commissioning procedure was followed.
Can I complete the certificate on site?
Yes. TradePlanr lets you record the pressure test, flow rates and manifold settings, capture the signature and produce the PDF at the property.
Related certificates
Pipework Pressure Test Certificate
The pressure/soundness test record for new or altered water and heating pipework.
Central Heating Commissioning (Benchmark)
The Benchmark commissioning checklist completed when a boiler or heating system is installed.
Powerflush Certificate (BS 7593)
The record of a chemical or power flush and inhibitor dose to BS 7593.
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