Gas Supply Alterations and Capacity Upgrades
When the demand on a site changes, or building works cut across an existing service, the supply has to change with it. We assess the existing capacity, design the alteration or uprate, and carry out the works with as little disruption to supply as the scope allows.
What the work involves
- Assessing the existing service size, pressure and available capacity
- Calculating the new load required by additional plant, appliances or units
- Designing an uprate, diversion or reroute around proposed building works
- Network liaison and approvals for the revised connection
- Installation, purging, recommissioning and tightness testing
- Reinstatement of excavated ground and finishes
Who this is for
How it works
- 1
Tell us about the site
Send us the address or postcode, what you need and any drawings you already have.
- 2
We survey and design
We establish where the mains network is, what load you need and what the site conditions allow.
- 3
You receive a fixed quotation
A written price covering the full scope up to your meter position, with no obligation to proceed.
- 4
We programme and install
Once accepted, we book the works, carry out the excavation and connection, and reinstate the ground.
Why choose Castlerock Gas
Accredited contractors
Work is delivered by fully accredited contractors holding GIRS registration and ISO 9001, 14001 and 45001 certification.
One point of accountability
We handle design, network liaison, approvals and installation, so you are not chasing several parties for one connection.
A fixed, no-obligation quotation
You get a clear written price for the scope, with no sales pressure and no surprise fees added later.
Frequently asked questions
How do I know if my gas supply needs upgrading?
If the combined load of your existing and proposed appliances exceeds what the current service can deliver, an uprate is needed. Share your appliance schedule or plant list with us and we will assess the load as part of the quotation.
What does a gas supply upgrade cost?
It depends on the size of the new service, the distance to a suitable main, and the ground conditions along the route. We give a fixed written price after survey.
My building works cross an existing gas pipe. What now?
The service will need diverting or protecting before works proceed. Send us your drawings early — the earlier a diversion is designed, the less likely it is to hold up the wider programme.
Ready to connect your property to the gas network?
Tell us about your site and we'll come back with a fixed, all-in quotation — no obligation, no jargon.