
Piekstraat
Rotterdam
142 apartments
2022 - 2025
Variations in
heat-exchanger appliances

Piekstraat project
Piekstraat is the name of an imposing new residential building being built in the street of the same name in Rotterdam, at the head of "Feyenoord Island". According to developer Heijmans Vastgoed, this is an undiscovered piece of Rotterdam, which is still barely inhabited. That is about to change: there will be 142 luxury flats spread over 22 floors, with catering facilities plus a number of waterfront lofts on the ground floor and two parking decks above. The future residents - completion date: second half 2025 - will soon have stunning views of the city skyline or the New Maas river. Triple glazing, ventilation with heat recovery, underfloor heating and cooling: in terms of energy efficiency and comfort, the residences meet the most modern requirements. Interduct company Bemar is installing the ventilation in the flats and common areas on behalf of Heijmans.

A heat-exchanger for every apartment
Each apartment will have a technical area containing, among other things, a heat-exchanger unit from the Zehnder ComfoAir series. There is a great variety in the surface area of the flats (56 to 234 m2), which is reflected in the appliances: 102 have the E300, 32 have the E400 and in the larger flats Bemar is installing a Q450 (x5) or Q600 (x3). "That says something about the size of the flats," confirms project manager Wido Verhulst. "The largest apartments are lofts spread over two floors."
CO2-sensors in the living-rooms and bedrooms ensure a continuous supply of fresh air as needed. In the bathroom, a push-button switch will be installed instead, allowing the resident to manually turn the ventilation up to a higher setting while showering. The intake and extraction ducts are embedded in the concrete floors and exit into a shared shaft. From here, the system draws in fresh air from the roof and exhaust air is blown out onto the parking deck.
Bemar is also providing the air treatment installation in the bike sheds, corridors and stairwells of the residential tower. Two air treatment units from SystemAir are installed for this purpose. Novenco, commissioned by Bemar, is providing the ventilation for the parking levels.

The power of collaboration
Heijmans is building the 142 flats using the tunnelling principle. This means that the walls and floors are poured complete with the installations already in place. So good coordination and collaboration between the contractor and the various installers is very important. This one is going just fine, says Wido. "That's what tunnelling needs. You have to help each other, because you depend on each other."
Bemar also receives help from sister company Robé: it is supplying all the spiral pipes, rectangular ducts and project-specific products for the project. By the way, the materials are stored in a rather special way. Because Peak Street is at the tip of an island, space on the construction site is particularly tight. Heijmans built a pontoon out in the water for the storage of materials.