Timber-Joists, Battens, Foiled Polystyrene Panels

'Timber-Joists, Battens, Foiled Polystyrene Panels'

Warmfloor's selection of Timber-Joists, Battens, Foiled Polystyrene Panels (TJBFPP) modules have been developed...

  • to provide underfloor heating in joisted or battened floors where a continuous-pipe system is preferred to a fully modular system
  • to provide a form of underfloor heating which is fully compatible with acoustic battens and the latest fabricated joists
  • as the most suitable method for incorporating underfloor heating beneath a floor deck which is formed from timber planks
  • as a superior alternative to the use of routed polystyrene and rigid aluminium heat diffusers which we have had to use in the past.

TJBFPP modules are formed from 50mm thick polystyrene either 350mm wide (to suit 400mm centres) or 550mm wide (to suit 600mm centres).

 

Modules have pipe channels formed in the top surface in a range of different patterns. The sketches illustrate the 350mm modules. The 550mm modules have three pipe-strands...

 

The straight sections of pipe channel on each module are factory-fitted with a thick, soft-temper aluminium foil heat diffuser, to spread the heat from the pipe beneath the floor deck. The curved ends and the channels which are for the Flows and Returns, are left unfoiled to minimise heat transfer, because these are likely to be positioned at the edge of a room and beneath furniture.

When the modules are in place, a continuous length of heating pipe is pressed into the channels. Where the pipe passes across the joist/battens, the notch is covered by a steel protector.

Warmfloor's selection of modules provide advantages for installer and user:

  • They suit fixed or acoustic battens and softwood or fabricated joists
  • The use of thick soft-temper foil avoids the creaking noises which are often caused if rigid aluminium diffusers are used instead
  • Having pre-fitted foil as the heat diffuser makes it a simple matter to cut modules to length with a sharp knife, saving a lot of time on site and avoiding the hassle of having to trim rigid aluminium diffusers with tin snips
  • The low thermal mass of the floor structure ensures fast response to changes in heating demand
  • The final floor deck can be 20-25mm softwood or hardwood planks
  • Alternatively, it can be 18-22mm tongued and grooved chipboard or ply, depending on centres, and this can be covered with a timber overlay, tiles or carpet.