The first step was to treat the sand and cement screed (500 m2) with PRIMER SN two-component, solvent-free epoxy resin-based primer. After applying the primer, it was broadcast with QUARTZ 0.5 quartz sand. Once the primer had hardened, any excess quartz sand was vacuumed off and the surface was sanded, cleaned, treated with a second coat of PRIMER SN and then broadcast again with QUARTZ 0.5. After removing any excess sand, the surface was sanded and cleaned again.
The application of the coating could then commence, starting with the first layer of ULTRATOP LOFT F one-component, coarse-textured, trowellable cementitious paste, which is applied with a flat metal trowel. This product is used to create flooring with a decorative, materic-effect finish resistant to abrasion and subjected to intense pedestrian use. This product’s particular consistency, the reduced thickness of the layer applied (2-2.5 mm) and the possibility of combining various colours, gives designers the chance to express their creativity to the full when creating floor and wall coatings. The product was mixed with ULTRATOP COLOR PASTE pigment. Once the surface had dried, it was sanded with fine sandpaper to give it a smooth finish and to level off any areas where too much product had been applied.
The next step was to apply PRIMER LT one-component, acrylic adhesion promoter diluted 1:1 with water, followed by a second layer of ULTRATOP LOFT F again mixed with ULTRATOP COLOR PASTE.
The surface was sanded down again, and the surface was protected with a coat of roller-applied ULTRATOP BASE COAT, a one-component acrylic formulate that is used as a base coat to even out absorption. The surface was then treated with two coats of MAPEFLOOR FINISH 58 W, a two-component, aliphatic, transparent, or coloured, matt polyurethane finish, which improves the resistance of surfaces to abrasion without altering their colour, as was requested by the client.
INSTALLATION OF CERAMIC, GROUT LINES, SEALANTS AND CARPETS
In the bathrooms, offices and entrance hall the ceramic tiles were installed with KERAFLEX MAXI S1 ZERO, a deformable cementitious adhesive with extended open time and no vertical slip and very low emission of volatile organic compounds. The tile joints were grouted with KERAPOXY CQ, an epoxy-based grout that guarantees high resistance to chemicals, while the expansion joints were sealed with MAPEFOAM closed cell polyethylene foam cord and MAPESIL AC elastic sealant.