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
- 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
- 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
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.
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
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.

Compare Kits

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

Kit Size (m2)	5	12	20	30	40	50	60	70	80
Temperature Limiting Bath Control	Yes	X	X	X	X	X	X	X	X
Zonal Regulation Unit	X	Yes	Yes	X	X	X	X	X	X
Constant Supply Temperature Unit	X	X	X	Yes	Yes	Yes	Yes	Yes	Yes
Polyplumb Flexible Pipe	1	1	2	3	4	5	6	7	10
Overlay Floor Panel	1	3	4	6	8	10	12	14	16
Manual room thermostat	1	1	1	1	1	1	1	1	1
Push fit manifold	X	X	X	3	4	5	6	7	10

Kit Size (m2)	5	12	20	30	40
Temperature Limiting Bath Control	Yes	X	X	X	X
Zonal Regulation Unit	X	Yes	Yes	X	X
Constant Supply Temperature Unit	X	X	X	Yes	Yes
Polyplumb Flexible Pipe	1	1	2	3	4
Overlay Floor Panel	1	3	4	6	8
Manual room thermostat	1	1	1	1	1
Push fit manifold	X	X	X	3	4

Kit Size (m2)	50	60	70	80
Temperature Limiting Bath Control	X	X	X	X
Zonal Regulation Unit	X	X	X	X
Constant Supply Temperature Unit	data-icon=I>	Yes	Yes	Yes
Polyplumb Flexible Pipe	5	6	7	10
Overlay Floor Panel	10	12	14	16
Manual room thermostat	1	1	1	1
Push fit manifold	5	6	7	10

Specifications

Maximum heat output	approx 100W/m2
Recommended design flow temperatures	45 - 50°C
Maximum circuit length	80m
Maximum coverage per circuit	12m2

Floor Finish	Overlay ™
?	Cover detail^*	Fixing method
Ceramic tiles	Direct	Flexible grout and adhesive
Optional cover layer	10mm Ply / 6mm MDF	Fix ply using Overlay™ glue plus screw where necessary
Optional cover layer	6mm Hadie backer board	Use tile adhesive conforming with EN12004-Type C
Solid wood, engineered wood and laminate	Direct	Secret fixing to Overlay™ floor panel through T and;G
Carpet - with cover layer	10mm Ply / 6mm MDF	Fix ply using OVerlay™ glue plus screw where necessary
or	6mm Hardie backer board	Use tile adhesive conforming with EN12004-Type C
Vinyl^ - with cover layer**	10mm Ply / 10mm MDF	Fix ply using Overlay7trade; glue plus screws where necessary