The preliminary preparation work on the substrates was vitally important and involved the application of a layer of TOPCEM PRONTO ready-to-use, normal-setting, controlled-shrinkage mortar with high thermal efficiency for quick-drying (4 days) screeds. The mortar was applied to create an unbonded screed using a sheet to avoid rising damp. It was also reinforced at the mid-point with an electro-welded mesh.
Once the specified drying time for the screed had been respected, the surface was grinded with a special grinding machine and, once all the dust had been removed with an industrial vacuum cleaner, a coat of PRIMER SN, two-component, pre-fillerized epoxy primer, was applied. MAPENET 150, alkali-resistant glass fibre mesh, was embedded in the primer and the entire surface was broadcast with QUARTZ 0.5.
After removing all the excess quartz sand, the substrate was sanded and all the dust was removed. Work then continued with the application of a second coat of PRIMER SN to completely cover the mesh and, while the primer was still wet, the surface was again broadcast with QUARTZ 0.5.
The substrate needed to be sanded down again and, after removing all the dust with a vacuum cleaner, three coats of MAPEFLOOR DECOR 700 (fillerized with 30% by weight of QUARTZ 0.25 and tinted with MAPECOLOR PASTE) was applied.
Only at this point could the “liquorice colour effect” phase be undertaken. This was achieved by applying MAPEFLOOR FINISH 58 W mixed with just the right amount of oxide, mother of pearl and silver powdered aluminium, which was spread over the surface with an American trowel and finished off with a sponge.
The final finishing steps involved the application of two coats of MAPEFLOOR FINISH 50 N with an American trowel followed by two coats of MAPELUX OPACA double-reticulating, high-strength matt metallic wax.
ULTRATOP LOFT FOR THE WALLS
In the service area, 15 m2 of walls were coated in “liquorice colour effect” using the ULTRATOP LOFT system to create decorative surfaces with a trowelled or mottled effect.
After applying two coats of PRIMER LT, acrylic primer (diluted 1:1 by weight with water) with a roller on the lime-based renders, followed by two coats of PRIMER GRIP WHITE, an American trowel was used to apply a first coat of ULTRATOP LOFT F, one-component trowellable coarse-textured cementitious paste, on the surfaces.
After sanding the substrate and removing all the dust with a vacuum cleaner, a second and then a third coat of ULTRATOP LOFT W tinted to form a “liquorice-effect” finish were applied.
After sanding the substrate again and removing the dust with a vacuum cleaner, the finishing operations were carried out by applying two coats of MAPEFLOOR FINISH 58W, matt polyurethane finish, with a short-haired (mohair type) roller. The application of MAPELUX OPACA, double-reticulating metallic wax, completed this intervention, which was carried out to perfection.