Timber-Joists, Pipe-in-Polystyrene Modules

Warmfloor'schoice of Timber-Joists, Pipe-in-Polystyrene Modules (TJPIPM) system is a range of pre-assembled modules which make it easy to install UFH in a suspended timber floor which has joists set at 600mm centres. They are equally suitable for use with timber planks or a panelled floor deck.

Each TJPIPM module is manufactured from rigid polystyrene which is 50mm thick and 550mm wide. A serpentine pipe channel is machined into the top surface, the whole surface is then covered with thick, soft-temper aluminium foil. We press a length of heating pipe into the foiled pipe channel and then fit a thinner aluminium foil layer across the whole top surface of the module.

The aluminium foil layers wrap around the pipe and act as a heat diffuser, to conduct heat away from the pipe and spread it evenly across the underside of the floor deck.

 

Modules are available in three lengths - 2400, 1800 and 1200,, - and these are used in combination to install modules along the length of each joist space. Each module is supported on L-section plastic brackets or battens and interconnected in series along the joist space using any of the modern push-together plastic fittings.

Individual groups of modules can then be linked in parallel in order to achieve very even floor temperatures, by bringing a common Flow pipe across one end of the joist spaces and using a common Reverse Return to gather together the Returns.

Alternatively, smaller groups of modules can be daisy-changed together in series. The use of a soft-temper aluminium foil diffuser eliminates the creaking sounds which can occur during warm up if you use rigid aluminium diffuser plates.

 

 

 

With modules installed, the floor deck can be fitted in the usual way. This can be:

moisture-resistant chipboard plywood traditional pine or hardwood planks

On joisted Ground floors, where there is a need to install thermal insulation across the whole of the floor, plain polystyrene is used to complete the floor insulation.

Warmfloor's selection of TJPIPM modules provide:

Quick and simple installation of pre-assembled underfloor heating modules using push-together plumbing fittings Simple stocking for an installer, of just three different module sizes None of the creaking associated with hard aluminium diffuser plates Repeatable performance which has been measured by BSRIA Installation of underfloor heating and floor insulation, at the same time

TJPIPM modules create a high-output system which avoids the dangers of having heated air spaces below the floor deck and which does not rely on having heating pipe fixed to the underside of the floor deck.