CALSILIT GF – Silicate priming and strengthening product for mineral substrates and under silicate facade paints
Product based on potassium water glass intended for strengthening all mineral construction substrates outside and inside of buildings and for proper preparation of the substrate under CALSILIT F and HISTORICA FKZ silicate façade
paints. It is used for surface reinforcement of absorbent and weathered concrete substrates, cement screeds, lime renders, cement-lime renders and cement renders, cement and fi bre boards and raw surfaces made of bricks, blocks, hollow blocks and other ceramic or silicate materials of that type. The product is intended for priming only mineral substrates (such as concrete, traditional lime renders, cement-lime renders and cement renders, as well as thin-coat mineral and silicate renders). Note: Do not apply the product on substrates covered with plastic-based paint coatings and renders, as well as on gypsum substrates.
| Base binder: | potassium water glass; |
| The content of volatile organic compounds VOC: | cat. A/h. The product contains less than 40 g/l VOC; |
| Density: | approx. 1.05 g/cm³; |
| Content of solids: | min. 7%; |
| Colour: | transparent; |
| Average coverage: | approx. 0.20 l/m² (depending on the substrate absorbency); |
| Temperature of application (air and substrate): | from +8°C to +25°C; |
| Relative air humidity: | ≤75%; |
| Packaging: | Disposable plastic packaging containing 5 and 10 litres of product. |
| Storage: | Product should be stored in sealed packaging, in a cool room, but protected from frost. Opened packaging should be tightly closed and used as quickly as possible. |
| Shelf life: | O12 months from the date of production printed on the packaging, with originally sealed packaging. |
• Mineral nature
• Improves paint coating adhesion
• Reduces and equalises substrate water absorption
• Ensures high vapour permeability
• Binds and strengthens the substrate
• Has very good penetrating properties
• Reduces dustiness
• Does not change the substrate colour
SUBSTRATE PREPARATION: Substrate should be mineral and sound/stable (without scratches and cracks), degreased, clean and dry, and free of biological contamination and chemical efflorescence. In case of algae/fungi growth, the substrate should be cleaned mechanically and then washed with water and disinfected with ALGIZID. Any loose layers, not bound to the substrate (e.g., loose render or flaked coatings), should be removed. Old and/or dirty substrates should be washed and degreased with water and CLEANFORCE cleaning agent, while existing plastic-based coatings should be removed. For particularly uneven substrates, first use levelling compounds, and then smooth out the surface with KOMBI FINISZ levelling and smoothing compound. Small unevenness can be smoothed right away with KOMBI FINISZ levelling and smoothing compound. An absorbent substrate should be primed with an adequate product before applying base coats and/or levelling compounds. If the product is applied on new mineral substrates (e.g., concrete, lime render, cement render, cement-lime render) – a minimum 2-week curing period is required. Note: Directly before applying the product, the elements made of materials susceptible to alkalis (i.e. wood, metal, glass or clinker brick) should be protected against splashing.
PRODUCT PREPARATION: The packaging contains a ready-to-use product. It cannot be diluted.
APPLICATION: The product should be applied on the substrate with a brush, roller or by spraying. On absorbent substrates, the product should be applied in two layers using “wet on wet” method. Note: The product is alkaline, therefore, it is necessary to protect eyes and skin. Safety clothing must be worn while carrying out any work. In case of contact with eyes, immediately rinse them thoroughly with plenty of water. If irritation develops, seek medical assistance.
DRYING: The curing and hardening period of the product applied to the substrate before applying the paint is about 24 hours. Protect the freshly applied coat against precipitation and condensation until it dries completely. Closed rooms should be ventilated after priming.
USEFUL HINTS: During the application and setting of the product, rainless weather should prevail, with an air temperature above +8°C. Setting time may be longer due to low temperatures and high relative humidity. If this is the case, it is necessary to wait until the primer sets and hardens completely before applying a paint. Tools should be cleaned with water immediately after work is completed. Avoid applying the product on surfaces directly exposed to sunlight or during strong wind. In order to protect the unset product layer against severe weather conditions, it is recommended to use appropriate protective meshes on scaffolds.
CALSILIT GF - TDS
