With over 80% of the concrete floors needing to be levelled, the substrates were firstly primed using ECO PRIM T PLUS, low odour acrylic primer in water dispersion with very low emission level of volatile organic compounds (VOC), followed by the application of ULTRAPLAN, a self-levelling, ultra quick-hardening smoothing compound for thicknesses from 1 to 15 mm, with a very low emission level of VOC, preparing substrates to receive any kind of floor covering where an excellent resistance to loads and traffic is required.
Concrete substrates that only required small patching repairs were rectified using PLANIPREP SC, a fibre-reinforced skim coating compound distributed in Australia by Mapei Australia, and NIVORAPID, ultra-fast setting, thixotropic, cementitious levelling compound for horizontal and vertical surfaces.
Some parts of the flooring had lead sheeting installed to act as a barrier between x-ray rooms and offices.
These areas were levelled using NIVORAPID mixed with LATEX PLUS to improve the deformability and bonding strength of the levelling mortar.
WATERPROOFING WET AREAS
The floors and walls in the bathrooms and wet areas were waterproofed using MAPEGUM WPS, fast drying flexible liquid waterproofing membrane. Once the second coat of this product was dry, the substrates in these areas were primed with a layer of undiluted ECO PRIM T PLUS, smoothed with PLANIPREP SC in preparation to install the vinyl coverings. MAPEFLEX PU 45 FT paintable, rapid, high modulus polyurethane sealant and adhesive was used for sealing expansion and distribution joints. All wet area vinyl coverings were installed using ADESILEX G19, two-component, epoxy-polyurethane adhesive for resilient and textile floorings.
INSTALLING VINYL AND TEXTILE COVERINGS
Over 60,000 m2 of vinyl floors supplied by Tarkett were installed in the public areas using ULTRABOND ECO V4 SP, a high-performance adhesive especially suitable for installing PVC and rubber flooring as well as a universal adhesive for all common resilient floor coverings.
About 28,000 m2 of vinyl coverings were, on the other hand, installed on walls using ROLLCOLL, a universal adhesive in water dispersion for vinyl and textile floor and wall coverings. In other areas, textile floors were installed by using ULTRABOND ECO TACK, acrylic tackifier dispersed in water with a very low emission level of volatile organic compounds (VOC).