Diffusion Plate System
Designed for timber joist floor applications.
The system uses aluminium plates to diffuse the heat over the floor area. Due to the high conductivity of the plates the reaction time compared to traditional screed systems is reduced.
REHAU Diffusion Plates 
The REHAU aluminium heat diffusion plates are designed for the use of underfloor heating in a joist floor application. They are manufactured from 0.8mm thick aluminium and are supplied in 1m lengths (1/2metre lengths available on request) either as:
Both plates can be easily trimmed to length by cutting a ‘V’-shaped notch into every channel using a hacksaw. Ensure any rough edges are removed by using a rat tailed file before fitting any pipes. The pipes are tightly griped within the plates ensuring maximum heat transfer. Due to its highly conductive nature, the aluminium plates diffuse the heat evenly over the plate area. The heat is then transferred through the floor surface into the room. Standard 25mm EPS 70 floor insulation (or alternative i.e. fibreglass wool) must be installed directly below the plates to reduce heat loss.
Joist Saddle Bracket
The joist saddle bracket is designed to support the EPS insulation to the correct depth below the plates. They are fitted over the joist at 500mm centres and at each insulation joint. Please avoid air infiltration at the end of joist runs, as this will seriously affect the heat transfer.
IMPORTANT
When using the Diffusion Plate system on joists spaced greater than 400mm centres, joists must be overbattened at 90°to the joist run and spaced at 400mm centres. Battens should be 25mm x 50mm and fixed flat onto the joists. With this method, compressible insulation may be looped over the joists, to replace the 25mm EPS 70 and joist saddle brackets.
 | Section 5_Floor Instalaltion Systems | 2393 kb |
| Avernish datasheet | 159 kb |
| Orkney | 171 kb |
www.rehau.co.uk: Building Solutions > Underfloor Heating > Floor Systems > Diffusion Plate System
© REHAU Ltd. All Rights reserved. 2008
© REHAU Ltd. All Rights reserved. 2008