Retrofit Underfloor Heating Overlay Pack

£546.31£3,566.55 Incl. VAT

Free delivery over £150 (Exceptions Apply)
Next Day Available | 30 Day Return Policy
Further Delivery Information


This Retrofit Underfloor Heating Overlay pack is the ideal solution for a retrofit underfloor installation. Perfect for kitchen, bathrooms, extensions and conservatories.

This system can be tiled directly on top of. No requirement for primer. The floor must be level, can be installed onto the concrete of the wooded subfloor. Can be fixed using insulation fixing discs with screws or tile adhesive.

Select Pack Size Required to view the material list.

Insulation Specification

  • Total overall dimensions – 1200mm x 600 mm x 20mm
  • Pipe Diameter – 16mm
  • Thermal conductivity – 0.033 W/mk
  • Pipe centres – 150mm
  • Material – Cement Reinforced Surface XPS
  • Water Absorption – 0.6%
  • Compression Strength – 400 Kpa
  • Temperature Range – -50 deg to 75 deg Centigrade
  • Fire performance – BS 476 / EN13501-1 Class 0 / Euroclass E
  • Sound Reduction – BS EN ISO 10140-3 19dB ( 6mm )
  • Weight – 2.48 kg

Retrofit Underfloor Heating Overlay Pack Content

Please select the size pack required for actual content. 

  • 16mm Pipe – As Required
  • Single Loop Control Pack or Manifold and Pump Set
  • Reducers and/or 16mm Compression Couplings- As Required
  • Bend Supports- As Required
  • 1200 x 600 x 20mm Insulation Panels- As Required
  • Scrim Tape – As Required
Retrofit Underfloor Heating Overlay Pack

Delivery Information

We have multiple delivery options

  • Next day carrier
  • 2-3 day carrier
  • Click & Collect from store


The cost of the carriage will be displayed before your final checkout. Free delivery is available on most items for orders over £150, exceptions do apply.


  • Orders will only be dispatched and delivered on weekdays.
  • Orders for the next working day delivery must be placed before 2 pm, this gives us time to pick and pack before the carrier arrives to collect.
  • We aim to dispatch all carrier delivered items within 48hrs, and all items delivered on our own transport within 5 days, Monday to Friday.
  • A dispatch email will be sent when your goods leave us, if delivery is by the carrier, this email will include tracking information. If your order is delayed for any reason, we will contact you.


We pride ourselves on our customer service but mistakes can happen. If you receive an incorrect or faulty item, please notify us within 30 days to arrange a refund, return or exchange.

Retrofit Underfloor Heating Overlay Pack