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Sprung Floor System
The REHAU Sprung Floor system is used for impact resilient floors, which are predominantly used for physical activities, such as sports halls, dance studios, leisure centres, squash courts etc. To achieve the best performance from the system, it is recommended to use a high quality flooring system, e.g. Junckers Bluebat Sports Floor System (batten size 48x50mm).
REHAU Sprung Floor System 
The underfloor heating pipes are not fixed in any way to the sprung floor structure. This ensures the unique performance characteristics of the sprung floor are preserved. It also means that the benefits of a REHAU underfloor heating system can be enjoyed without having to compromise on the sprung floor effects.
Each underfloor heating circuit is laid in the double meander pattern with all heating circuits installed parallel to each other. This simplifies the hydraulic fine-tuning of the complete system during commissioning.
The REHAU Sprung Floor system utilises a matrix of REHAU RAUTHERM Universal pipe 20mm x 1.9mm within an air chamber formed between the floor surface, the flooring joists and the insulation layer beneath the pipes.
Due to the construction of the REHAU Sprung Floor system, it is possible to use it with other raised sports floor systems.
The RAUFIX rail is manufactured from Polypropylene and its unique pipe clip design makes it ideal for the 20mm REHAU RAUTHERM Universal pipe.
REHAU also offer another pipe clipping rail, the Railfix system, which can also be used.
The function of the rail is to secure the underfloor heating circuits in the planned pattern. RAUFIX rails are supplied in 1m lengths and must be cut down to fit between the joists of the sprung floor. The rails should be spaced at 400mm centres.
Staples
To secure the RAUFIX rails to the insulation, 40mm staples should be pushed in through the rail at alternating angles. The staples should also be used to fix the pipe close to where it passes though the notched joists.
Insulation
To achieve the best performance a minimum of 25mm thick high performance insulation is required beneath the pipes. To meet current Building Regulations some installations may require extra insulation.
Note: Some sports floor systems are limited in height, e.g.Junckers Bluebat Sports Floor System - 48mm total), which means that only 25mm thick insulation can be installed above the concrete substrate. In such circumstances, any additional thermal insulation required must be fitted underneath the substrate.
Floor Preparation
The substrate must be sufficiently flat and smooth. Typical requirements require no gaps of more than 3mm under a 3m straight edge. (Please refer to flooring manufacturer’s guidelines). A moisture barrier is installed to prevent moisture rising into the wood structure when the underfloor heating is in operation. (See flooring manufacturer’sguidelines for exact specification).
www.rehau.co.uk: Building Solutions > Underfloor Heating > Floor Systems > Sprung Floor System
© REHAU Ltd. All Rights reserved. 2010
© REHAU Ltd. All Rights reserved. 2010