The world's largest supplier of underfloor heating

Polypipe Overlay Water Underfloor Heating System

Polypipe Overlay Water Underfloor Heating System

RRP: £1,713.60 £1,444.00

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Overlay™ is a unique low profile floor heating system ideal for both renovation and new build projects.

Installed over the existing floor and only 18mm in depth, Overlay™ allows floor heating to be installed where traditional under floor systems would either require expensive excavation or would require the floor to be raised to an unacceptable level.

The Overlay™ system is available in 2 panel types to allow for installation to all build types and floor coverings.

Overlay™ panel is a fibrous panel used for heavyweight floor coverings such as ceramics, or where the floor covering needs to be secured directly to the panel, e.g. solid wood.

Overlay™ systems use a 12mm pipe at 150mm pipe centres and provide excellent response times and heat output compared with traditional built in under floor heating solutions and are therefore ideal for both traditional heating systems and low temperature renewable systems.

Overlay systems are compatible for 12mm pipe.

  • Polypipe Zonal Regulation Unit 2/3 Circuits

    Polypipe Zonal Regulation Unit 2/3 Circuits

    • Water temperature control for underfloor heating
    • Mixer Valve
    • Automatically switches On and Off via a built-in pipe thermostat
    • A wiring connection for a room thermostat or wireless sensor
    • Covers up to 30m2 with a single pump unit
  • A Rated Grundfos Single Circuit Constant Supply Temperature Unit

    A Rated Grundfos Single Circuit Constant Supply Temperature Unit

    • New EEI compliant pump
    • Mixer Valve
    • Adaptor Kit
    • Isolation Valves

    The Control Pack maintains the water temperature in an underfloor heating system between 35°C and 60°C.

  • Polypipe Overlay Floor Panel

    Polypipe Overlay Floor Panel

    Overlay™ allows floor heating to be installed into existing spaces quickly, simply and practically. The unique system is a patented low profile panel, which is laid over existing solid or timber floors. Tiles and laminate can be laid directly onto the system. Carpet and vinyl require a capping layer of 4-6mm plywood. Overlay™ is perfect for kitchens, bathrooms or conservatories, where minimal wall space is available and total design freedom is required.

  • Polypipe Pipe

    Pipe, includes stainless steel pipe stiffeners

    • Suitable for all plumbing and heating applications as a flexible alternative to copper tube
    • Suitable in both hard and soft water areas.
    • Material: Polybutylene
    • Outside Diameter: 12mm
    • KIWA/KOMO approved (Certificate numbers K14341, 14342 and 14343)
  • Polypipe Manual Thermostat

    Polypipe Manual Thermostat

    The PBRS is a traditional dial room thermostat that combines accurate comfort control with a familiar dial type user operation. This thermostat is used in conjunction with the time clock PB2CTC and is provided with a connection for the wet room sensor.

Kit Content Comparison Table

This table shows exactly what you'll get in the box based on your chosen kit size.

Kit Size (m2)51220304050607080
Temperature Limiting Bath ControlX?? X?? X?? X?? X?? X?? X?? X?? 
Zonal Regulation UnitX?? X?? X?? X?? X?? X?? X?? 
Constant Supply Temperature UnitX?? X?? X?? 
Polyplumb Flexible Pipe1123456710
Overlay Floor Panel1346810121416
Manual room thermostat111111111
Push fit manfioldX?? X?? X?? 3456710
Kit Size (m2)512203040
Temperature Limiting Bath ControlX?? X?? X?? X?? 
Zonal Regulation UnitX?? X?? X?? 
Constant Supply Temperature UnitX?? X?? X?? 
Polyplumb Flexible Pipe11234
Overlay Floor Panel13468
Manual room thermostat11111
Push fit manfioldX?? X?? X?? 34
Kit Size (m2)50607080
Temperature Limiting Bath ControlX?? X?? X?? X?? 
Zonal Regulation UnitX?? X?? X?? X?? 
Constant Supply Temperature Unit data-icon="I">
Polyplumb Flexible Pipe56710
Overlay Floor Panel10121416
Manual room thermostat1111
Push fit manfiold56710
Maximum heat outputapprox 100W/m2
Recommended design flow temperatures45 - 50°C
Maximum circuit length80m
Maximum coverage per circuit12m2
Floor FinishOverlay ™
????? Cover detail*Fixing method
Ceramic tilesDirectFlexible grout and adhesive
Optional cover layer10mm Ply / 6mm MDFFix ply using Overlay™ glue plus screw where necessary
Optional cover layer6mm Hadie backer boardUse tile adhesive conforming with EN12004-Type C
Solid wood, engineered wood & laminateDirectSecret fixing to Overlay™ floor panel through T&G
Carpet - with cover layer10mm Ply / 6mm MDFFix ply using OVerlay™ glue plus screw where necessary
or6mm Hardie backer boardUse tile adhesive conforming with EN12004-Type C
Vinyl** - with cover layer10mm Ply / 10mm MDFFix ply using Overlay7trade; glue plus screws where necessary
NameProduct CodePrice
Polypipe Overlay System - 12m21378£1,444.00
Polypipe Overlay System - 20m21379£1,810.00
Polypipe Overlay System - 30m21380£2,410.99
Polypipe Overlay System - 40m21381£3,082.00
Polypipe Overlay System - 50m21382£3,707.99
Polypipe Overlay System - 60m21384£4,382.99
Polypipe Overlay System - 70m21385£5,018.99
Polypipe Overlay System - 80m21386£5,684.99

Delivery options

At The Underfloor Heating Store, we strive to make every step of your order as easy and convenient as possible, from finding the right underfloor heating setup to best suit you to taking delivery of your system the very next day.

We're proud to offer a range of delivery options to suit you, including free delivery on all of our orders or next working day delivery for a fixed price of £4.99.

Our delivery options

  • 2-3 Working Days (3-5 working days on wet room and energy efficiency products)
  • FREE
  • Next Working Day
  • £4.99 (order before 4pm, Monday to Friday)
  • Next Working Day Before 10.30am
  • £14.99 (order before 4pm, Monday to Friday)
  • Saturday Delivery
  • £29.99 (order before 4pm on Friday)