QUARTZ RENDER

SURFACE PREPARATION

Francesco GUARDI Quartz Render needs to be applied on hard, permanent, and perfectly smooth surfaces. The surface needs to be clean, dry, and free of dust, fat, and other substances decreasing adherence. Before applying the render, make sure to prime the well-dried and well-cured surface with a Francesco GUARDI priming agent in a colour similar to the colour of the render. New cement and cement-lime surfaces should be primed no sooner than 4 weeks after their completion. You may apply quartz render after the priming agent has dried, i.e. no sooner than 24 hours after priming in optimum drying conditions (temperature at 20+/-2°C, humidity at ca. 60%).

USAGE.

Spray application: Before use, dilute the product with water max. up to 4% (for 20 kg of plaster up to 0.8 litres of water, for 10 kg of render up to 0.4 litres of water) and mix thoroughly with a low-speed mixer. The prepared mass should be applied with a rendering kit recommended by LAKMA. Spray the stream of render perpendicular to the wall surface from a distance of 40-50 cm, preferably in two layers. The spray gun should be guided in a uniform motion on the surface forming a separate whole. Spray in a circular, vertical or horizontal motion, combining the "wet on wet" layers. Apply the second (levelling) layer immediately after the first one or after it is completely dry. Recommended nozzle for gun no. 2 and 3, pressure in the compressor from 4.0 - 5.0 atm.

Manual application with a trowel (only colours from the STONE EDITION collection: KAM/056 - KAM/069): Before use, mix the product thoroughly with a low-speed mixer. Do not dilute. The render should be applied with a stainless steel trowel to a thickness slightly greater than thickness of a grain, and then carefully smoothed so as not to "stretch" the render excessively. If necessary, you may apply a second layer of render, which should then be smoothed with a steel or plastic trowel.

ADDITIONAL INFORMATION.

Due to natural raw materials in the render, in order to achieve the best visual results, we recommend to use render from a single batch for a separate surface in a given stage. Applying Francesco GUARDI Quartz Render should be done in ground and ambient temperatures between +5°C and +25’0, avoiding direct sunlight during application of render, and during the dry-up phase. Do not apply if air humidity exceeds 80%. Mixing render for too long, or mixing it at high speed may discolour the aggregate, and foam the resin. LAKMA® SAT cannot be held responsible for the quality of work in cases of non-compliance to the stated regulations. Exterior surfaces should be sheltered from rain for 24 hours. The more smooth the surface, the easier the application, and the more visually pleasing is the end effect. Quartz render to be used in the whole of a particular investment must be manufactured on the basis of quartz aggregate from one and the same production batch. Otherwise the quartz aggregate or the render ready to be used should be mixed in such proportions as would make it possible to achieves homogenous colour.