References

Tom Mutters School, Neustrelitz, Germany

Tom Mutters School

Project facts

Neustrelitz, Germany
Municipal
Radiant Heating & Cooling
Completion: 2012

Uponor Involvement

1400
Tom Mutters School is located on Höhenstraße in Neustrelitz, Germany, and provides mental development services for disabled children and youth. Teachers instruct students not only from the front of the room, but also sometimes on the floor.


To maintain a comfortable floor temperature, the complete renovation of the over 40 year-old school building included the replacement of existing radiators with underfloor heating. Renovations began by stripping the building down to its original concrete structure. The flooring, along with all non-load bearing interior walls, all windows, the entire roof structure, as well as all of the building’s technical systems were fully removed. As is often the case, renovations are always a good source of surprise and this was no different with the Tom Mutters School project in Neustrelitz.


“While measuring the floors, we discovered that these varied in height by up to 2 cm,” recalled Thomas Hillenhagen, who oversaw the planning and site management for building services. He further explained that, “You could also see anchor bolts on the concrete slabs sticking out of the side walls. Plus, there were height variations in the floors that formed when the concrete slabs were originally installed. There was no way to avoid levelling the floor under the heating system.” Even with the new underfloor heating system and its functional layers of levelling, thermal insulation and impact noise reduction, it was important to keep as close to the original room height as possible.


This demanded an especially low profile for the floor heating system. By pairing the Uponor Minitec floor heating system with Knauf Levelling Screed 425, it was possible to keep the floor build-up to a mere 82 mm. This gave the new multi-level installation approximately the same height as the previous flooring system. Costly and time-consuming modifications to door, window and railing heights were not necessary. Uponor Minitec features a remarkably low profile of 15 mm.


The heating pipes could be installed quickly by a single technician. Installers first placed the self-adhesive L-shaped edging, followed by the Minitec plastic spacing tiles directly onto the synthetic coated paper. “The spacing tiles feature an adhesive layer on the bottom. This guarantees a secure bond between the subfloor and the plastic tiles,” explained Klaus Schlepps, Sales Promoter for Uponor. The nubs on the tiles allow the high-pressure network of PE-Xa plastic piping to be laid in compliance with current standards. Directly on and between the nubs, the tiles are manufactured with a grid of punched holes placed at regular intervals through which the levelling screed can easily flow, allowing it to create a stable structure by bonding together with the heating system and subfloor. The surface is heated with fast warm-up times and quick temperature regulation at low temperatures in the heating water circuit. Individual room temperature control was achieved using a 24 V system with a C-35 regulator and T-35 room temperature sensors from Uponor.


The Knauf Levelling Screed 425 was kept to a mere 32 mm above the plastic spacing tiles, meaning the piping was covered by about 20 mm. Despite the thin layer, the floor screed can accommodate distributed loads up to 3 kN/m² and concentrated loads up to 2 kN. After only one day, it was possible to walk on the floor with Minitec and levelling screed, and it was ready for heat drying after just 48 hours. One week later, the residual moisture was measured at the required 0.3 CM% and, with a water flow temperature of 45 °C, the floor was ready to be covered. This allowed the various other building contractors to resume their work with next to no wait.
 

Tom Mutters School

0002919

Project information

Project information

Address
Höhenstr. 51
Country
Germany
Completion
2012
Project Type
Renovation
Building Type
Municipal
Product lines
Minitec, Uponor Radio 24V

Partners

Partners

enduser
Landkreis Mecklenburgische Seenplatte
Platanenstraße 43 17033 Neubrandenburg
Germany

specifier
Ingenieurbüro Thomas Hillenhagen
Elisabethstr. 6 17235 Neustrelitz
Germany

architect
Dipl.-Ing. Christian Peters Freie Architekten & Ingenieure
Glambecker Str. 3 17235 Neustrelitz
Germany

installer
Ausbaugenossenschaft eG
Demminer Straße 15 17389 Anklam
Germany

installer
Wolfgang Wittenberg Estrich Service
Altbauernstr. 5 17166 Alt Sührkow Hohen Mistorf
Germany

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