Zweirad-Center Stadler, Munich
Chemistry to build on
Project New-build branch of Germany's biggest bicycle retailer Use of vibrated floor system to install large-format fully vitrified stoneware units Specification of Sopro RS 648 vibration slurry as product ideally suited to fully vitrified stoneware
Signboard Applicator
Abel GmbH, Otzing
Client
Zweirad-Center Stadler GmbH, Regensburg
Contract volume
6,000 m² sales area
Completion
December 2017
Products Sopro HSF 748 flexible bonding slurry with trass Sopro RS 648 vibration slurry Sopro FL flexible tile grout Sopro Sanitary Silicone
Zweirad-Center Stadler, Munich I www.sopro.com
www.sopro.com
Finished scheme
Zweirad-Center Stadler, Munich I www.sopro.com
Finished scheme
Zweirad-Center Stadler, Munich I www.sopro.com
Finished scheme
Zweirad-Center Stadler, Munich I www.sopro.com
Construction phase
Zweirad-Center Stadler, Munich I www.sopro.com
Zweirad-Center Stadler, Munich
A mecca for cyclists
Fast, reliable installation of large-format tiles using vibrated floor system A new branch of German bicycle retailer ZweiradCenter Stadler, which opened in Munich at the end of 2017, includes a 6,000 m² sales area with largeformat ceramic coverings installed as a vibrated floor construction. To ensure the achievement of a strong, reliable bond, the project team specified Sopro RS 648 vibration slurry. Established in Regensburg in 1936, ZweiradCenter Stadler boasts a long history. With 16 branches nationwide, Stadler now ranks as Germany's biggest bicycle retailer, in terms of both sales area and range of bicycles and bicyclerelated products. As at its other outlets, Stadler's new Leuchtenbergring branch in Munich features a gigantic sales area presenting a wide array of bicycles, bikewear and accessories and lending it the character of a permanent bicycle trade fair. The new building even incorporates a short test track.
Strong, hardwearing floor finish as an absolute must The floor covering specified for the new showrooms features dark-coloured (XL-Style Irox Black), high-quality tiles. The project team decided to install the tiles using the so-called vibrated floor system. This method is frequently employed in commercial buildings as a cost-effective means of achieving a strong, hardwearing floor finish. It effectively amounts to a rationalized form of thick-bed laying, whereby the natural stone or ceramic coverings are laid in conjunction with a bonding layer directly into a previously applied mortar bed. A high-frequency vibrating roller or beam is then passed over the covering and the tiles vibrated into the screed bed. By ensuring full compaction of the screed, this procedure prevents void formation. Moreover, the resulting adhesive bond between covering and mortar bed is also capable of accommodating high loads. The final step involves grouting the gaps between the tiles. Adoption of a staggered joint pattern also lends the vibrated floors a high shear strength. The vibrated floor system allows the fast and efficient installation of flooring that is ready for early use. All the above factors played a key role in the design team's decision to use this system for the large-format (60 x 60 cm), ceramic tiles installed in the 6,000 m² sales area of the new Munich branch of Zweirad-Center Stadler.
Strong, reliable bond guaranteed by Sopro RS 648 The first stage of the works entailed mechanical roughening of the existing concrete floor by shot blasting. The substrate was then cleaned to remove dirt, contamination and adhesionimpairing substances such as oil, grease and dust. In the next step, Sopro HSF 748 – a onecomponent, trass-bearing, polymer-modified bonding and contact slurry – was applied over the full surface by notched trowel or block brush to promote adhesion of the bedding mortar. The mortar bed (with 0/8 mm aggregate grading) was then applied wet-on-wet to the bonding slurry in a minimum thickness of 25 mm. Prior to laying the floor covering, Sopro RS 648 was combed onto the full surface of both the mortar bed and the rear face of the tiles so as to minimize void formation during installation. The final step involved passing the vibrator over the tile covering. Sopro RS 648 is a flexible, one-component, polymer-modified bonding and contact slurry, specially designed for the installation of ceramic and stone coverings using the traditional vibrated floor system. Whereas vibration had only previously been possible with relatively smallsized tiles, Sopro RS 648 now allows the method to be adopted for the installation of larger-format units. The trass-bearing material is particularly suitable for slurry application when laying tiles with low water absorption (fully vitrified stoneware or rectified fully vitrified stoneware). The joints in the ceramic coverings were finished with Sopro FL, a flexible, frost-resistant, rapidset, trass-bearing, cementitious tile grout for 2 – 20 mm joint widths. It excels by its rapid initial set, is ideal for low-suction tiles and is very easy to wash off. This easy removability helps to minimize the consumption rate. Sopro FL allows early use of the installed and grouted covering.
Zweirad-Center Stadler, Munich I www.sopro.com