Design & survey
Review plans, existing boiler capacity, mains pressure and drainage — advise before walls go up.
Home Extensions
High-quality extension plumbing & heating — built to last
A side return, rear kitchen-diner or full wrap-around extension deserves plumbing and heating that matches the build — not a rushed afterthought. ASC HEATING & PLUMBING plans and installs extension pipework, heating and bathrooms with the same care on first fix and second fix, so your new space stays warm, dry and reliable for years.
Why quality matters
Extensions that perform — built for everyday use
Poorly routed pipework, undersized boilers and heating zones that never balance are common when plumbing is squeezed in at the end of a build. We work early with your builder or architect so routes, insulation zones and plant space are decided before floors are closed up.
The result is neat copper and plastic where it should be, correct fall on wastes, adequate hot water for the extra bathrooms and kitchens, and heating that feels as good in the new wing as in the rest of the house.
- First-fix and second-fix planned around your programme
- Heating capacity checked before you commit to finishes
- Documentation and commissioning for warranties and building regulations
Typical extension projects
- Single-storey rear and side extensions
- Loft conversions with new bathrooms
- Garage and outbuilding conversions
- Open-plan kitchen-diners with underfloor heating
- Two-storey extensions and wrap-arounds
High quality. Properly installed. Made to last.
We use proven materials, correct fixing and isolation, and testing at every stage — pressure tests, heating commissioning and handover notes you can keep. Cutting corners on pipework and testing often costs far more when problems appear later; we build it right the first time.
First fix
Underfloor loops, radiator feeds, soil stacks and hot/cold runs — labelled and photographed where helpful.
Second fix & plant
Bathrooms, kitchens, manifolds, boilers and controls — aligned with tiler and electrician programmes.
Test & handover
Commission heating, check flows, register warranties and explain how to operate your new system.
Plumbing & heating for your extension
Underfloor heating
Wet underfloor heating in screed or between joists — ideal for open-plan extensions with a clean, furniture-friendly finish.
Radiators & heating zones
New radiators or additional zones tied into your existing system, balanced for even heat.
Boiler upgrades
Larger output or system upgrades when your current boiler cannot serve the extra footprint.
Kitchens & bathrooms
New en-suites, cloakrooms and kitchen plumbing — first fix through to sanitaryware and appliances.
Pressure & hot water
Boosters, cylinders and unvented solutions when the extension adds extra showers and taps.
Building regulations & coordination
Gas and heating work that must be notified under building regulations is completed through the correct routes, coordinated with your builder.
Planning an extension?
Send plans or describe your project — we will advise on heating, hot water and plumbing scope and provide a clear, itemised quote for work that lasts.