Who can fit gas bonding?

Main bonding to the gas pipework is electrical work, so it is done by an electrically competent person, usually an electrician. A gas engineer who finds it missing tells you in writing, often with a label or a note on the gas safety record, but does not fit it.

Do I need bonding if my pipes are plastic?

Often not. A service that enters the building in plastic may not need main bonding, but metal pipework inside can still need attention. The electrician checks what enters, where, and records what they found and decided, row by row.

Where should the gas bond go?

Close to where the gas enters the building, after the meter and before any branch, as HSE guidance (L56) describes. The record notes where each bond is connected, so the next person can find it.

Does a bathroom still need supplementary bonding?

Only if the conditions in BS 7671 Regulation 701.415.2 are not all met. Where they are, it can be left out. The record shows either the bonding fitted or the electrician’s answers to those conditions, and the decision stays with the electrician.

Is bonding work notifiable?

In England, bonding work on its own is not one of the listed types of notifiable work. In Wales it is listed as not notifiable. The record has a building notification answer for each nation, never filled in for you.

What does a C2 for bonding on an EICR mean?

C2 means potentially dangerous. In a rented home the landlord must have the remedial work done within the period the regulations set. This record shows exactly what was done and the readings taken.

I have a gas engineer’s bonding notice. What now?

Ask an electrician to check the bonding and record the work. The record notes the notice, its date and who issued it, and how the electrician responded, so you can show the gas engineer or your landlord what was done.

Certificate type

Earthing & Bonding Certificate

BS 7671:2018+A4:2026

When the job is earthing or bonding on an installation that is already there, such as bonding the gas and water after an EICR, answering a gas engineer’s notice or fitting an earth rod, the record should say exactly what was done. CertSync records each bond, where it is connected and how, the conductor you chose and why, and the readings you took.

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What is an Earthing and Bonding Certificate?

An earthing and bonding certificate is the electrician’s record of earthing or protective bonding work on an existing installation: which services were bonded, where and how, the conductor size they chose and why, the continuity readings, any earth electrode test, and how they answered a gas engineer’s bonding notice. It is not a BS 7671 model form; work that adds a circuit needs an EIC or Minor Works certificate.

Key features

Choose what the job covered: main bonding, supplementary bonding, the earthing conductor and MET, or an earth electrode
One row per bonded service: entry, connection, clamp, conductor size and its basis, label and continuity
Supplementary bonding per location, with every part joined, or your answers where none is fitted
Earth electrode rows with the test method, resistance and any distributor figure as you type it
A gas engineer’s bonding notice recorded with your response, never reproduced
Observations on the existing installation with a suggested code, kept apart from a condition report

How is the certificate printed, sent and checked?

Every option on the form is printed, with your answer ticked, so the reader sees what was chosen and what was not.
The footer reads "Prepared using CertSync", and the certificate states that the contractor named on it is responsible for its contents.
Print a QR sticker for the installation. Scanning it opens a public verification page that asks for the property postcode and keeps the customer’s personal details hidden.
Email the signed PDF to your customer from the app. Sending needs a connection.

Domestic, commercial and industrial use

Domestic use

In homes the usual jobs are main bonding to the gas and water at the point of entry, bonding refitted after a meter or pipework change, and supplementary bonding in a bathroom. Landlords often need the record to close an EICR observation.

Commercial use

In shops, offices and common parts the record covers bonding to each incoming service and to structural steel, with one row per connection, so a later inspector can find every bond and see how it was tested.

Industrial use

On industrial sites and outbuildings the record carries the earthing arrangement, the means of earthing and earth electrode tests, with the test method and the instrument used for each reading.

Ready-made observations

Choose Add from library in the Observations step and pick a common observation from CertSync’s built-in list instead of typing it out. Search as you type or filter by category and code. Picking one fills in the wording; you choose the code yourself every time. Your device keeps a copy of the library, so once it has loaded you can pick from it with no signal.

C1 — danger now; make it safe before you leave
C2 — could become dangerous; put it right urgently
C3 — improvement recommended
FI — could not be fully judged; further investigation advised

Any C1 or C2 makes the overall result unsatisfactory; C3 and FI on their own do not.

The wording and the code on every certificate are yours to decide: CertSync’s built-in observations are a starting point, not a judgement.

Frequently asked questions

Who can fit gas bonding?: Main bonding to the gas pipework is electrical work, so it is done by an electrically competent person, usually an electrician. A gas engineer who finds it missing tells you in writing, often with a label or a note on the gas safety record, but does not fit it.
Do I need bonding if my pipes are plastic?: Often not. A service that enters the building in plastic may not need main bonding, but metal pipework inside can still need attention. The electrician checks what enters, where, and records what they found and decided, row by row.
Where should the gas bond go?: Close to where the gas enters the building, after the meter and before any branch, as HSE guidance (L56) describes. The record notes where each bond is connected, so the next person can find it.
Does a bathroom still need supplementary bonding?: Only if the conditions in BS 7671 Regulation 701.415.2 are not all met. Where they are, it can be left out. The record shows either the bonding fitted or the electrician’s answers to those conditions, and the decision stays with the electrician.
Is bonding work notifiable?: In England, bonding work on its own is not one of the listed types of notifiable work. In Wales it is listed as not notifiable. The record has a building notification answer for each nation, never filled in for you.
What does a C2 for bonding on an EICR mean?: C2 means potentially dangerous. In a rented home the landlord must have the remedial work done within the period the regulations set. This record shows exactly what was done and the readings taken.
I have a gas engineer’s bonding notice. What now?: Ask an electrician to check the bonding and record the work. The record notes the notice, its date and who issued it, and how the electrician responded, so you can show the gas engineer or your landlord what was done.

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