Underfloor Heating · Essex
End-to-end underfloor heating: heat-loss design, manifold supply, pipework, screed liaison, wiring, commissioning and balancing. Wet systems for new-builds and extensions, electric mat systems for bathroom and en-suite retrofits.
15+ years on the tools · Gas Safe registered · Open 24/7 · Same-Day Service
Service Overview
Owner-led by Pierre Codarin from Southend-on-Sea. Single point of contact from first call to final invoice.
What it is
Underfloor heating uses low-temperature water (wet systems) or electric mats to deliver radiant heat across the whole floor area. We handle full design — heat-loss calcs, pipe spacing, manifold sizing, zoning — through supply, install, commissioning and balancing.
Who it's for
Anyone building an extension, fitting a luxury bathroom, or doing a new-build. Wet systems work best on ground-floor extensions and new-builds with a heated screed. Electric mats suit upper-floor retrofits and single rooms.
When you need it
Best installed during a screed pour (wet) or under new tiles (electric). Retrofitting into an existing floor without lifting it is possible with overlay systems, but cost-effectiveness drops sharply versus during a renovation.
Why hire a professional
Underfloor heating runs at lower flow temperatures (35–45°C vs 70°C+ for radiators), which makes it perfect for modern condensing boilers and essential for air-source heat pumps. It frees up wall space, distributes heat evenly, and lasts 50+ years when installed correctly.
The Real Cost Of Getting This Wrong
Underfloor heating that's badly designed or badly installed is an expensive problem buried under a floor you can't easily lift.
Our Process
Room-by-room heat-loss calc, pipe spacing and manifold sizing. We design first, then quote — no off-the-shelf sizing.
Itemised quote within 48 hours covering manifold, pipework, controls, commissioning. Lock-in price.
Insulation laid, pipework clipped to spec, manifold mounted and connected, full pressure test before any screed or tile work.
We work alongside your screeder or tiler to protect the system during pour or fix. Test held under pressure throughout.
System filled, vented, balanced room-by-room, thermostats commissioned, controls demonstrated. Warranty paperwork handed over.
Benefits
No hot spots or cold corners — the whole floor warms evenly.
Frees up wall space for furniture, vanity units and joinery — no aesthetic compromise.
Low flow temperatures are perfect for air-source heat pumps — future-proofed against gas phase-out.
Radiant heat warms occupants efficiently — set-point temperatures can sit 1–2°C lower than with radiators.
PEX-AL-PEX pipework in a screed has a design life of 50+ years when properly installed.
Every room independently controlled. Heat only what you use.
Inside The Detail
These are the details cheaper installers skip — and the reason their work fails inside two years.
Working across
Southend-on-Sea · Chelmsford · Basildon · Colchester · Brentwood · Rayleigh · Wickford · Billericay · Harlow
Full Service Area ListWet UFH circulates warm water through PEX-AL-PEX or PE-RT pipe clipped to insulation board, then covered with a heated screed (liquid anhydrite or traditional sand/cement). Pipe is run at 150mm or 200mm centres depending on heat loss. Each room (or zone) returns to a manifold with its own actuator and thermostat. Best suited to new-builds, extensions and full-floor refurbs where the screed can be poured fresh.
Electric mat systems (150W/m² or 200W/m²) sit between tile adhesive and the floor, controlled by a dedicated thermostat and floor sensor. Ideal for bathrooms and en-suites where lifting a whole floor for wet pipework isn't viable. Lower install cost, but higher running cost per kWh — best as a comfort upgrade in single rooms, not as primary heating for a whole house.
We specify branded manifolds (Polypipe, JG Speedfit, Uponor) with built-in flow meters per loop — essential for balancing. A dedicated UFH pump-mixing unit blends boiler flow down to UFH operating temperature (typically 40–45°C). Wired or wireless thermostats per zone, with smart options (Nest, Heatmiser, Honeywell evohome) commissioned at install.
Where lifting a floor isn't an option, overlay UFH systems (Continal Lo-Pro, Wunda) add 18–25mm to floor height and sit above existing joists or screed. They run hotter than buried systems (45–50°C) and suit ground-floor extension retrofits — but always check finished floor heights against doors and skirtings before committing.
Questions
Cost, timeline, guarantees, lifespan, emergency cover — answered without the sales speak.
Ask YoursUnderfloor heating is always priced from a free on-site survey or your floor plans — we don't quote per m² in the abstract because pipe spacing, manifold sizing, insulation and zoning all change the number. You'll receive a fixed written quote, with the price locked in for 14 days.
Yes — either by lifting the floor and laying buried wet pipework, fitting an overlay system on top of the existing floor, or installing electric mats under new tiles in single rooms. We'll survey and tell you the most cost-effective route.
Almost any modern condensing boiler will run UFH — we add a mixing manifold to drop the flow temperature. Older non-condensing boilers can struggle and may need replacing alongside the UFH install.
Often slightly cheaper on a like-for-like basis — radiant heat warms occupants at a lower air temperature. Pair it with a modern condensing boiler or heat pump and the saving grows. Pair it with an old boiler and weak insulation and the saving disappears.
Pipework install for a 4-zone wet system on a 60–80m² extension is typically 2–3 days, plus screed cure time. Electric mat installs are typically 1 day per room before tiling.
Buried wet systems add nothing to finished floor level (they sit inside the screed). Overlay wet systems add 18–25mm. Electric mats add 3–5mm under tile adhesive.
Yes — we work across Southend-on-Sea, Chelmsford, Basildon, Colchester, Brentwood, Rayleigh, Wickford, Billericay and Harlow. If you're outside that ring, call 07809 414913 and we'll confirm coverage before you spend a minute filling in a form.
Yes. Gas Safe registered for all gas work, fully insured, and trading as Avanza Heating & Bathrooms Ltd (Companies House 17201187). Gas Safe is our only listed accreditation. Certificates and policy numbers available on request before any work starts.
Related Services
Gas Safe boiler installs, swaps, repairs and annual servicing.
View ServiceBespoke bathroom design, fit and finish — start to silicone.
View ServiceFull heating systems, radiator upgrades and general plumbing — our core trade across Essex.
View ServiceNext Step
Heat-loss design, fixed written quote within 48 hours, commissioned and balanced by hand.
Gas Safe registered · Fully insured · 1-year workmanship guarantee · Companies House 17201187 · Southend-on-Sea
