Sample CP3 certificate
Sample CP3 with fictional data. All personal details shown are fake.
A CP3 records the commissioning of a new or replacement chimney or flue for a gas appliance. It documents flue type, dimensions, termination position, and the results of spillage and flow tests. The record confirms that the flue installation meets BS 5440 requirements for safe dispersal of combustion products.
What it covers
- Flue type, material, and dimensions
- Termination position and clearance distances
- Spillage test results
- Flue flow test (smoke pellet or match)
- Ventilation provision check
- Visual inspection of flue route and joints
Who needs a CP3?
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Frequently asked questions about CP3
When is a CP3 required?
Does a flue liner replacement need a CP3?
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