In daily life, in addition to penetration pollution, cutain wall also have a common form of pollution, vertical flow pollution. In this article, let us learn about vertical flow pollution and prevention and solution methods!
(1) Performance of vertical flow pollution
Vertical flow pollution is the pollution that occurs on the curtain wall panel after dust is absorbed by the surface of the glue joint or the platform or slope and washed by rainwater. Especially after rain, many “flow marks” often appear on the curtain wall, which is the vertical flow pollution after rainwater washing. It usually appears above and below the glue joint, not only on stone curtain walls and aluminum curtain walls, but also on glass curtain walls and other curtain walls. This phenomenon has a great impact on the aesthetics of the curtain wall, especially light-colored stone and aluminum curtain walls.
(2) Causes of vertical flow pollution:
1. Dust and dirt accumulate on the surface of curtain wall silicone sealant:
The polar groups on the surface of silicone sealant in the glue joint will absorb dust and dirt, and because of its low surface energy, water cannot fully wet and wash the surface, resulting in dust and dirt accumulation.
2. Unreasonable design of the building
The unreasonable design of the curtain wall or slope causes dust accumulation, coupled with poor drainage, the rainwater easily pollutes the curtain wall below after scouring.
(3) Solution and prevention of vertical flow pollution
1. Regular cleaning
Unlike infiltration pollution, vertical flow pollution is easy to solve by cleaning the curtain wall, but cleaning is difficult, expensive, and has a short maintenance time.
2. Optimize the curtain wall design
Appropriate drainage and rain protection measures can solve it.
3. Use high-quality curtain wall silicone sealant
Weatherproof silicone sealant has excellent adhesion to non-porous building materials. For most building materials, such as glass, coated glass, and painted metal, primer is not required. Neutral curing, suitable for most building materials, no adverse reactions and corrosion. Silicone sealant has excellent UV resistance, weathering resistance, and high temperature resistance. After curing, it forms a strong and elastic silicone rubber that is not affected by rain and snow. High mobility and permanent flexibility.
Tengyu 731 weather-resistant silicone sealant is suitable for weather-resistant sealing of curtain walls. It has no penetration pollution to porous materials such as stone and decorative materials such as aluminum plates and aluminum-plastic plates with coated surfaces. At the same time, the curtain wall silicone sealant can minimize the vertical flow pollution of curtain walls, reduce the frequency of curtain wall cleaning, and reduce maintenance costs.