The field of architecture involves numerous structures and surfaces made of different materials. Polysilazane coatings have a wide and targeted application method here, providing guarantees for the durability and aesthetics of buildings.
For building exterior walls, a comprehensive inspection and pre-treatment of the wall surface is required before using a polysilazane coating. If it is a concrete wall, it is necessary to first repair surface defects such as holes and cracks, then polish to make the wall flat, and remove impurities such as dust and release agents from the surface. For exterior wall decorative materials such as tiles and stone, it is necessary to ensure that their surfaces are clean, dry, and free from looseness. Next, choose the appropriate coating method based on the material and area size of the wall.
Large area exterior walls are often sprayed. When preparing the polysilazane coating, an appropriate amount of water or specialized diluent should be added according to the appropriate dilution ratio to adjust it to the viscosity required for construction, generally controlled at around 30-40 seconds (coating -4 cups). Use high-pressure airless spraying equipment to keep the spray gun perpendicular to the wall, with a distance controlled at 20-30 centimeters. Move the spray gun at a uniform speed to avoid missed spraying, sagging, and other situations. After each spraying, it is necessary to wait for the coating to dry naturally, and the interval time depends on the weather conditions. Generally, on sunny days, the interval is 2-3 hours, and on cloudy days or with high humidity, it can be appropriately extended to 4-6 hours. Usually, 2-3 coats of spraying are needed to achieve the desired protective and decorative effect, such as improving the waterproof, anti pollution, and weather resistance of the exterior wall, so as to keep the building's exterior wall clean and beautiful for a long time.
The use of polysilazane coating varies in the steel structure of buildings, such as steel beams, steel columns, etc. Firstly, the surface of the steel structure is subjected to rust removal treatment, which can be achieved by sandblasting, mechanical polishing, etc., to thoroughly remove rust, oxide scale, etc. on the surface, reaching a rust removal standard of Sa2.5 or above. Then, it is wiped with a cleaning solvent to remove residual oil and dust. Afterwards, a combination of brush coating and roll coating was used to apply the polysilazane coating. First, use a brush to carefully apply the coating to the corners, welds, and other areas of the steel structure that are difficult to roll onto, ensuring that the coating is fully covered; Then use a rolling coating tool to roll coat a large area of flat parts. When rolling, pay attention to controlling the thickness of the coating. The thickness of each layer is generally controlled at 30-50 μ m. After each layer is coated, it should be dried appropriately for about 1-2 hours. According to the protection requirements, 3-5 layers can be coated to make the steel structure have good anti-corrosion, anti rust, and anti-corrosion properties, extend its service life, and ensure the safety and stability of the building structure.
For some special parts inside the building, such as bathrooms, kitchens, and other areas that are prone to moisture and chemical erosion, polysilazane coatings can be applied to small decorative materials or accessories by impregnation. For example, metal pendants in the bathroom and stainless steel shelves in the kitchen can be immersed in a pre prepared solution of polysilazane coating for a certain period of time, usually 5-10 minutes. Then, they can be slowly removed and placed in a well ventilated area to air dry naturally or in a low-temperature drying device to dry. This will form a waterproof and corrosion-resistant protective film on the surface of these accessories, improving their durability in humid, acidic and alkaline environments.
In short, polysilazane coatings have comprehensively improved the performance and quality of buildings in the field of construction by using appropriate methods for different parts and materials. Whether it is resisting the erosion of the external natural environment or responding to the test of internal special environments, they have demonstrated their irreplaceable advantages.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150K.       
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.