Views: 26 Author: Site Editor Publish Time: 2026-11-02 Origin: Site
Recently, Canlon officially launched JS231 exterior wall breathable polymer cement waterproof coating. Targeting the pain points of waterproofing and breathability in exterior walls, the product adheres to stringent national standards and is guided by practical engineering applications, further enriching Canlon's coating product portfolio and providing more targeted waterproofing solutions for building projects.
Exterior wall leakage, hollow and moldy insulation layers, and peeling finishes are common problems that have long been faced by building exterior walls. The root cause is often that the waterproof layer "only blocks but does not drain," preventing internal moisture from escaping.
Canlon JS231 exterior wall breathable polymer cement waterproof coating uses a two-component water-based formula that scientifically blends high-quality modified acrylic copolymer emulsion with high-strength cement and nanoporous materials. After film formation, it forms a unique microporous water vapor permeable structure—which can resist the intrusion of external water pressure of 0.3MPa, while smoothly expelling water vapor trapped inside the wall and insulation layer, reducing wall defects caused by water vapor accumulation from the source and extending the service life of the exterior wall system.
The product fully complies with GB/T23445-2025 "Polymer Cement Waterproof Coating" Type III standard, and its water vapor permeability meets the requirements of GB/T17146-2015. Type testing by an authoritative institution has shown excellent performance in its core indicators.
Key Indicators
Tensile strength ≥1.80MPa, elongation at break ≥30%, adaptable to slight deformation of the base surface;
It has a bonding strength of ≥1.0MPa and excellent compatibility with exterior wall plastering and putty systems;
Water vapor permeability ≥50g/㎡・24h, achieving both breathability and waterproofing standards;
It exhibits low-temperature flexibility with no cracks at 2℃, making it suitable for diverse climates.
In terms of construction, JS231 supports multiple methods such as brushing, roller coating, and spraying. The thickness of a single coat is controllable, and two coats can achieve the designed thickness of 1.5mm. The film is uniform and free from cracking and whitening. The two-component water-based formula is green and environmentally friendly, and is suitable for various non-exposed waterproofing projects such as new exterior walls and exterior wall repairs.
As a leading domestic polymer building materials enterprise, Canlon always prioritizes product quality and focuses on addressing engineering pain points, continuously iterating its product technology and system solutions. It provides partners and end-users with more reliable, efficient, and cost-effective systematic waterproofing solutions, safeguarding the quality and safety of building projects.
