61 HPM 0413

HPM April 2013

WWW.HPMMAG.COM Got a story? Ring us on 01732 748041 or e-mail twood@unity-media.com UNDERFLOORHEATING Staying one step ahead of the game Uponor UK’s Self Attaching System cuts either installation time or associated labour costs. HPM reports... The key element of the Self Attaching System is an attaching band consisting of thousands of micro teeth wound in a spiral around Uponor’s oxygen-tight PEX pipe, allowing it to be safely and securely fixed onto specialist laminated insulation boards. The Self Attaching System is also suitable for both commercial and domestic properties. Due to its design, the Self Attaching System can be installed by just one person, offering significant cost savings. So here are the nine simple steps. 1 The first step an installer needs to make is to ensure that the sub-floor is level and swept clean of all debris 2 Once the floor is prepared, the actual installation process is remarkably simple. First an installer needs to fit Uponor’s edge insulation around the perimeter of the room they are working in. The edging insulation will prevent heat from escaping into the walls and also absorb expansion from the heated floor screed 3 Following on from the edging insulation, the laminated insulation boards need to be laid down and sealed together with Uponor tape so as to stop any floor screed from leaking into any gaps and prevent the Self Attaching System’s insulation panels from lifting later on in the installation process. Then, fit the ‘free-hand cut’ side of the insulation panels against the edging strips to avoid any gaps. The boards also provide excellent sound insulation, offering a 28dB impact noise reduction. This feature can allow for the removal of an acoustic resilient layer, resulting in further time and cost savings 4 The laminated insulation boards then need to be installed lengthways in the room. The boards are marked with a series of grid lines which provide installers with a simple guideline to follow, to ensure all of the pipework is installed in a uniform manner 5 Once the edging strip and laminated insulation boards have both been fitted, the next stage is to begin laying the PEX pipework itself, which is wrapped in the Self Attaching System’s micro teeth. Using Uponor’s ‘hook and loop’ technology, a high-retention force-fixing method, the Self Attaching System can be fitted in any layout simply by laying the pipe down in the desired pattern and fixing it in place by pressing it down with your foot. Due to its high-retention force, it can even be installed in dirty site conditions 6 If the layout needs to be adjusted, the Self Attaching System can be quickly and easily altered by just pulling the pipe up and repositioning it. This means the system can accommodate any fittings in the room which may interrupt the intended path of the pipework 7 Once the pipework has been laid in the desired pattern, it can be connected to the heat distribution point using a compression joint. This must be completed in line with all relevant building regulations and properly tested before the installation of the flooring 8 Following on from the connection of the pipework to the heat distribution point, and once all relevant regulations have been met and tests conducted, the installation of the Self Attaching System is now complete. The installation is now ready to accept the screed pour. Once the screed has cured, the visible parts of the edge insulation can then be removed and the final floor covering can be laid. It is recommended that a plan of the pipe layout is kept and photocopied for the homeowner as it will be helpful for them to keep should there be any problems. If the homeowner decides to move house then a record of the pipework plans will be useful to pass onto the new owners. 60 APRIL 2013 HEATING & PLUMBING MONTHLY enquiry number 146 Step one Step four Step five Step seven Step eight Step six Step two Step three Job done


HPM April 2013
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