The pre-formulated monolayer coatings ensure the waterproofing of the facade as well as its decoration since they present varieties of colors and appearance of finish. The manual application of the product to coat an exterior wall has been taken into account in its manufacture. Its "ready-to-use" presentation saves valuable time, convenience of implementation and application since it is enough to spoil it on the site so that it is ready for use. In addition, its formulation has been designed so that it does not stick to the tool, which facilitates a regularity of result.
- Watering lance
- Taloche or sand
- Protective gloves
- Taloche scraper
- Rule to train
- Projection of the facade coating
- Finishing by scratching
Projection of the facade coating
1. Check that the substrate is sound, clean, free from cracking and cracked, and that the blocks or bricks that compose it are well sealed. The vertical joints of thin-jointed assemblies must also be checked and refilled if they have gaps that could create a significant rupture of the seal or at least an irregularity of porosity.
2. Reduce any sponges or overly prominent breasts. Let dry 48 hours (at an average temperature of 20°) then moisten the support before application.
3. Strike the product in the concrete mixer and start the projection of the plaster on the wall with a trowel. If the humidification of the support dusted it, you will be sure that there is no trace of paint or plaster (case of an old wall renovation) or fat.
4. The application of the coating can also be done using a sand, if you master this type of projection. Perform the operation in two passes except in case of scraped finish on a neat and perfectly homogeneous support.
Finishing by scratching
1. Tighten and erect the ruler. Use a thick gauge for checks during training. The total thickness which may be only 12 to 15 mm on a neat support (10 mm is the minimum allowable), should reach 15 to 18 mm on a common masonry without going too far (25 mm is a maximum punctually eligible).
2. The scraped finish which is permissible only on a perfectly homogeneous background, requires 3 to 16 hours depending on temperature (check the evolution of the coating) before making it. Other finishes, on a 2-pass coating, can be made (rubbed, thrown-trowel or brushed). This is usually a function of regional traditions and know-how.
(photos / visuals: © Parexlanko, except special mention)
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