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Loose Wire Underfloor Heating

The Loose Wire System is designed for use within the adhesive layer under tiles or within a leveling compound under other floor finishes.

Guide Price
from £53.67 /m² ex. VAT
(Based on a 10m² purchase)

Key Benefits


Ideal in small or irregular-shaped rooms

Ideal for spaces with a lot of fixtures or corners, e.g. a bathroom or a sunroom with curved or slanted walls


Quick installation

Single connection lead for fewer steps


Perfect for stone or tiled floors

Offers radiant heat for tiled kitchens and bathrooms.

small, modern bathroom interior

What Project is the Loose Wire System Designed For?

The Warmup Loose Wire System (also known as DWSWire) is designed to suit irregularly shaped rooms and rooms with many fixtures, since the heating cable can simply be maneuvered on the subfloor around fixtures with ease. The spacing of the cable can be adjusted to your requirements in the desired power output and to the layout of the room you are installing the system in. The Loose Wire is ideal for installation under ceramic or natural stone tiled flooring.

For regularly shaped rooms, Sticky Mat system offers a quick and precise installation alternative to Loose Wire. If you are looking to find an electric underfloor heating system to also protect the tiles, the DCM-PRO Heated Decoupling Mat is a practical solution for you. Alternatively, for floor finishes other than tiles, the Foil Heater System is the ideal solution as it does not require flexible tile adhesive or self-levelling compound; providing a completely dry structure upon which to install floorings such as carpet or laminate.

cozy modern kitchen white room interior

Qualities Of The Loose Wire Heating Cable

At only 1.8mm, the heating cable is the thinnest on the market – so it does not raise the floor height visibly. The small cross-section of the heating element allows it to be installed without the need for a layer of a self-levelling screed. Install a Loose Wire System with a tile adhesive layer under tiles or with a self-levelling compound under other floor finishes.

Since installing Loose Wire does not require self-levelling screed, you do not lose any additional time or costs related to the drying of the system. Once the cable is laid down, the floor finish can be installed on top of it.

The Warmup Loose Wire System is suitable for all applications providing primary or secondary heating in all rooms or projects that adhere to Building Regulations.

loose wire with box

Loose Wire Underfloor Heating Kit

Loose Wire is easy to install because it comes in the form of a kit. The kit contains all the necessary elements for the installation of the Loose Wire System.

  • Ultra-thin, 1.8mm cable multistrand. The dual-core heating cable is double insulated with an advanced fluoropolymer making it exceptionally durable and easy to tile over
  • Primer (for use of wooden subfloors)
  • Tape
  • Foam Roller
  • Installation manual

Note: Before beginning the installation of your Loose Wire heating system, please double check that you have the correct size and number of heaters for your project. If in doubt, please contact us at Warmup.

Guarantee & Warranty


Safety Net Installation Guarantee

If you accidentally damage the heating system during installation, return it to Warmup and we will replace it with another heater of the same make and model free.

Lifetime Limited Warranty

This product comes with a Lifetime Warranty. We are completely confident in the standard of our products.

Technical Information

Product Documentation
Technical Specifications
Operating voltage 230V: 50Hz
Cable Thickness 1.8 mm
Inner / Outer Insualtion Advanced fluoropolymer (ETFE)
Average Output rating 150 W/m²
Cold tail length 3m
Approvals EUFH heating mat approvals  EUFH heating mat approvals  EUFH heating mat approvals

Floor Drawings
Price Guide

You will also need

4ie smart thermostat main controls


Choosing the correct control system is crucial in ensuring that your heating system works in the best possible way, efficiently and easily.

electric underfloor heating insulation boards


Using Insulation Boards with under floor heating significantly reduces the heat-up times and running costs.

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Warmup offers an extensive range of electric and water floor systems compatible with all floor types, rooms and projects.

Electric Systems

  • ✓ Ideal for zones less than 25m²
  • ✓ Ideal for single rooms
  • ✓ Does not alter floor levels
  • ✓ Great for renovations

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Water Systems

  • ✓ Ideal for larger zones over 25m²
  • ✓ Rapid auto heat loss calculations
  • ✓ Compatible with existing central heating systems
  • ✓ Great for new-builds

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Projects Division Consultation

  • ✓ Bespoke heating solutions for new-build projects and larger renovations
  • ✓ Dedicated team to work with you
  • ✓ World-class expertise in R&D, building regulations and energy performance
  • ✓ Detailed system layouts for each stage of the project

Get In Touch with Warmup’s Projects Division
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For areas of 24m2 or more, use our full quoting system
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