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Dry System – Aluminium Spreader Plates

Aluminium Spreader Plates


Place an order on 01603 567594 or text 07702 858 622

Aluminium heat diffusion plates are located across the joists and stapled in place. Continuous pipework is pressed into place within the grooves of the diffuser plates. No supplementary fixings are required as the process of pressing the pipework into the diffuser plates is sufficient to retain it securely in the correct position. These plates are 395mm wide which is the standard spacing for traditional joisted floors.

With the development of manufactured joists the joist spacing has increased up to 600mm. An aluminium spreader plate cannot be used for these joists. The other problem is that these joists must not be notched, making continuous pipe installation impossible. There are several methods to overcome these issues such as counter battening joists. This will lift the floor level by a minimum of 16mm. You can apply battens to the chipboard attached to the joists and add additional floor on top of the battens. This method increases finished floor height by the batten height plus the height of chipboard/floorboards.

Alternative methods may be to:

  • Apply an overlay system to the chipboard attached to the joists.
  • To use the Lewis floor system. Full information on this system is in the screeded floor section.

When using diffuser plates it is essential that some form of insulation is used below the plates to stop heat losses into other areas. This could even be in the room below. Consideration also needs to be taken into account for your finished floor height in addition to the tog rating if carpet is to be laid.

Contact us on 01603 567594 or email us at

Aluminiuim spreader plates
UFH spreader plates
  • Aluminium offers an even distribution of heat throughout the whole area due to its high conductivity rate.
  • Quick and easy to lay.

At Orange Heating supplies we pride ourselves on offering a service where we ensure that you have the correct system for your project, we can assist you from conception to completion.

We always keep track of the latest innovations, so we are one step ahead with the latest technologies available.

Our aim is to supply good quality products at reasonable prices, we can offer you flexibility with our in-house Underfloor Heating design service. We will determine the area, zones and materials required for your project.

Our design service team will require a copy of your building plans via email or post. Once we have received the plans we aim to return them to you including a quotation within 48 hours.

Contact us on 01603 567594 or email us at