Free Samples

Delivered To Your Home

0800 756 6862

Call Us Today

Mon - Sat: 9am - 5pm

Open 6 days a week

Joist Floor Underfloor Heating

If you have a timber joist and you are looking for joist floor underfloor heating solutions then you have arrived at the correct place. Your floor joists form part of a suspended timber floor construction and help to support the subfloor which is installed on top. 

Joisted floors are typically found on upper floor levels, where there is no cast/concrete construction. Below we have 6 very efficient water-based joist floor underfloor heating solutions that are all suitable for use with timber joist floor constructions.

We have 6 different joist floor underfloor heating SYSTEMS to choose from...

Composite Structural Flooring Boards for use with a joists floor underfloor heating

Composite Structural Board System

A structural board flooring system that allows us to fit an underfloor heating system as an integral part of your build project.

pre-grooved insulation panels

Pre-Grooved Insulation Floor Panels

At just 25mm thick the pre-grooved insulation panels are a great low-build height solution for use over floor joists.

aluminium spreader plates suitable for use with a joist floor underfloor heating system

Aluminium Spreader Plates (Fit From Above)

A fast, dry installation method that adds minimum weight and does not increase your overall floor build height.

spreader plates that have been screwed to the underside of an existing timber floor between joists.

Aluminium Spreader Plates (Fit From Below)

A handy, fast solution to installing warm water underfloor heating when your finished floor has already been fitted. Installed from below, you will have no increase in your floor height.

pre-grooved insulation panels

Drymix Sand / Cement Over Timber Joists

Using standard construction materials, the underfloor heating pipe is fixed in place and an 8:1 dry mix sand/cement is laid over the heating pipe to provide an even heat distribution.

pre-grooved insulation panels

Drymix Sand / Cement Between Timber Joists

Using standard construction materials, the underfloor heating pipe is fixed in place and an 8:1 dry mix of sand/cement is laid over the heating pipe to produce an even heat distribution.

WE SUPPLY SIMPLE TO USE Underfloor Heating Controls

We use Heatmiser for all our joist floor underfloor heating controls. Including simple dial room thermostats, programmable and wireless thermostats, WiFi thermostats, and touch screen stats. We even have thermostats you can control using your smartphone from anywhere in the world.

Joist Floor Underfloor Heating - Composite Structural Board

An innovative solution, the composite structural flooring system enables us to install your water-based underfloor heating system cost-effectively as an integral part of the overall build process, this should save you both time and or money.

System Features:

  • 22mm low subfloor build height.
  • Structural flooring solution suitable for use on first floors.
  • For use with a boiler or a heat pump as your heat source.
  • Suitable for most applications where the heat loss does not exceed 75W/m².
Composite Structural Flooring Boards for use with a joists floor underfloor heating

Joist Floor Underfloor Heating - Pre-Grooved Insulation Floor Panel

The pre-grooved insulation panels are only 25mm thick, these individual panels allow for minimal floor height increase when installing warm water underfloor heating above floor joists.

System Features:

  • Fast, easy to fit, a completely dry installation.
  • The foil-faced insulation panels, provide an even heat distribution across your floor area.
  • We provide the standard panels with 200mm pipe spacing for normal heat sources, or 150mm pipe spacing which is used for low-temperature heat sources.
  • Meets the requirements of robust detail.
  • Suitable for most applications where your heat loss doesn’t exceed 75W/m².
pre-grooved insulation panels

Joist Floor Underfloor Heating - Aluminium Spreader Plates (Fit From Above)

Aluminum plates are designed to be fitted between your floor joists. The plates provide a quick, easy, dry installation method that adds very little weight, and this system will not increase your floor build height.

System Features:

  • The aluminum plates will distribute the heat evenly across your full floor area.
  • This fitting system is suitable for use between battens over a joist floor with a small increase in your overall floor heights, or these can be installed between joists to prevent any increase in your floor build height.
  • Our aluminum spreader plates are available in different sizes and various pipe spacing to give flexibility to joist centers.
  • Suitable for most applications where the heat loss does not exceed 75W/m²
aluminium spreader plates suitable for use with a joist floor underfloor heating system

Joist Floor Underfloor Heating - Aluminium Spreader Plates (Fit From Below)

This fitting method allows for underfloor heating to be installed below an existing floor, this system is suitable for timber frame constructions, and it will not increase your floor build height.

System Features:

  • Suitable for use where your finish floor or subfloor is already fitted, and there is no option to increase your floor build height.
  • The aluminum plates will distribute the heat evenly across your full floor area.
  • A fast installation solution for use in new and existing buildings with no increase in your floor build height.
  • Suitable for most applications where the heat loss does not exceed 75W/m².
spreader plates that have been screwed to the underside of an existing timber floor between joists.

Joist Floor Underfloor Heating - Drymix Sand/Cement Over Timber Joists

This underfloor heating fitting method uses readily available construction materials, which keeps the costs as low as possible. Water-based underfloor heating pipes are easily fixed to the insulation layer using staples supplied with your heating system.

System Features:

  • This type of underfloor heating system can be installed in new or existing properties.
  • Cheaper costs, the most simplest of systems with no specialist materials required.
  • Tried and tested UFH installation method used in thousands of homes across Scotland.
  • No floor screed means no need to wait for any dry time.
  • Suitable for most applications where the heat loss does not exceed 75W/m².
pre-grooved insulation panels

Joist Floor Underfloor Heating - Drymix Sand/Cement Between Timber Joists

This underfloor heating fitting method uses readily available construction materials, which keeps the costs as low as possible. Water-based underfloor heating pipes are easily fixed to the insulation layer using staples supplied with your heating system.

System Features:

  • This type of underfloor heating system can be installed in new or existing properties.
  • Cheaper costs, the simplest of systems with no specialist materials required.
  • Tried and tested the UFH installation method used in thousands of homes across Scotland.
  • No floor screed means no need to wait for any dry time.
  • Suitable for most applications where the heat loss does not exceed 75W/m².
pre-grooved insulation panels