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Underfloor Heating In-Screed Cable System

ThermRite
£60.00 inc. VAT
Cable Length (m)

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In-Screed Underfloor Heating Cable Systems

In-Screed Heating Cable Systems are designed for efficient and reliable underfloor heating in screeded concrete floors. Ideal for new builds and renovations, these cables provide consistent warmth under tile, stone, laminate, and wood floors. Installed within 50-100mm of cement-based screed, they offer excellent heat retention and durable performance with a lifetime warranty.

Available Cable Sizes & Heating Coverage

Choose from a range of cable lengths suitable to heat varied floor areas. Below is the coverage at different power outputs, helping you select the optimal cable for your heating requirements:

Cable Length (metres) Coverage - High Heat Loss (200W/m²) Coverage - General Room Heat (160W/m²) Coverage - Background Heat (100W/m²) Total Power Output (Watts)
13.7 1.0 m² 1.3 m² 2.0 m² 200 W
22.0 1.6 m² 2.0 m² 3.3 m² 340 W
28.0 2.1 m² 2.6 m² 4.2 m² 420 W
37.0 2.8 m² 3.5 m² 5.5 m² 550 W
45.0 3.4 m² 4.2 m² 6.7 m² 660 W
52.0 3.9 m² 4.9 m² 7.8 m² 800 W
59.0 4.4 m² 5.5 m² 9.0 m² 880 W
64.0 4.8 m² 6.0 m² 9.6 m² 960 W
72.0 5.4 m² 6.7 m² 10.8 m² 1,070 W
81.0 6.1 m² 7.6 m² 12.0 m² 1,210 W
84.0 6.3 m² 7.9 m² 12.6 m² 1,300 W
105.0 7.9 m² 9.8 m² 15.7 m² 1,580 W
129.0 9.3 m² 11.6 m² 19.0 m² 1,940 W
228.0 16.6 m² 20.6 m² 32.6 m² 3,060 W
339.0 24.6 m² 30.8 m² 48.6 m² 4,545 W
378.0 27.4 m² 34.6 m² 54.0 m² 5,070 W
417.0 30.2 m² 38.4 m² 59.6 m² 5,595 W
456.0 33.0 m² 42.2 m² 65.1 m² 6,120 W
537.0 38.8 m² 49.6 m² 76.1 m² 7,215 W

Key Features

  • Designed for embedding in 50-100mm thick cement screed
  • Power density options around 200W/m², 160W/m², and 100W/m² for various heating needs
  • Suitable for use under tile, stone, laminate, and wooden floors
  • Durable twin conductor cable with robust insulation and metallic earth screen
  • Lifetime warranty for peace of mind
  • Ideal for rooms with varying heat loss including kitchens, bathrooms, conservatories, and large open-plan areas

Technical Specifications

  • Voltage: 230V
  • Cable lengths ranging from 13.7m up to 537m to suit small to very large floor areas
  • Power output varies with cable length and heat density
  • Cable diameter: approx. 6mm
  • Minimum screed cover: 30mm above cable for protection and heat transfer
  • Installation temperature: minimum 5°C

Installation Notes

  • Heating cable must not be cut or shortened
  • Fix cable evenly with recommended spacing to ensure uniform heat distribution
  • Should be installed on suitable insulation for maximised efficiency
  • Connection via cold lead to thermostat control
  • Resistance testing before and after installation is mandatory for safety and warranty purposes

What’s Included

  • ThermRite™ In-Screed Heating Cable in chosen length
  • Installation instructions

Why Choose ThermRite™ In-Screed Cables?

ThermRite™ offers a robust, economical, and high-performance underfloor heating solution suitable for a broad range of projects. With trusted quality and safety certifications, these cables deliver consistent, comfortable heat embedded within screeded floors.

Select the appropriate cable length and power density according to your floor size and heating requirements for optimal comfort and efficiency.

Please note: Delivery times may vary depending on location, with specific details outlined below.

Standard Delivery

UK Mainland 

  • Delivery Time: 2–4 working days
  • Free Delivery on all orders

Express Delivery

UK Mainland

  • Delivery Time: 1–3 working days
  • Delivery fee of £15

Channel Islands

  • Postcodes Covered: GY*, IM*, JE* 
  • Minimum Order: £50
  • Delivery Fee: £70

Northern Ireland, Offshore Territories & Scottish Islands 

  • Postcodes Covered: BT*, HS*, KW, ZE
  • Minimum Order: £50
  • Delivery Fee: £35

Same Day Delivery 

  • Eligible Postcodes:
    E*, EC*, N*, NW*, SE*, SW*, W*, WC*, HA*, UB*, EN*, IG*, RM*, KT*, SM*, CR*, BR*, DA*, TW*
  • Minimum Order: £50
  • Same Day Delivery Fee: £60
  • Special Requests or Locations:
    For areas outside these postcodes or urgent quotes, please email orders@qualityheating.co.uk and we’ll do our best to accommodate.

Collections

Want to collect your order instead?You’re welcome to do so — just email us at orders@qualityheating.co.uk or message us via WhatsApp with your preferred collection time, and we’ll confirm the details.

Collection address: 284 Water Rd, Unit 9, London, HA0 1HX
  • Type Electric Underfloor Heating
  • Vendor ThermRite