Product Description

Protecting a building starts from the very first layer applied to the substrate. Our exterior waterproof primer is engineered to provide a breathable yet impermeable shield that stops moisture from penetrating the building envelope. As a National High-Tech Enterprise with over two decades of specialization in construction issues, we recognized that external walls are the most vulnerable to climate-induced cracking and leaking. We formulated this exterior waterproof primer with a unique alkali-resistant polymer that not only seals pores but also stabilizes the substrate pH, preventing the unsightly white efflorescence that often ruins the appearance of modern facades.

This exterior waterproof primer is a product of our dedicated R&D center in Huzhou, where we have optimized the formula to resist UV degradation and extreme thermal expansion. We understand that for international contractors, the cost of repairing a leaking wall far exceeds the cost of the initial coating; therefore, we prioritize long-term durability over low-cost additives. With 60+ patents backing our innovation, we have created a primer that significantly enhances the lifespan of the entire decorative system. When you specify our primer, you are choosing a 20-year legacy of engineering excellence and a product that has been proven in thousands of major projects across East China.

Specifications

Technical Metric	Specification Value
Polymer Type	Acrylic/Styrene copolymer
Density	Approx 1.05 g/ml
Alkali Resistance	No change after 48h (Saturated lime water)
Water Permeability	Reduced by 95% compared to untreated substrate
Surface Dry Time	1 - 2 hours (at 25°C)
Application Method	Roller, Brush, or Airless Spray

Application Fields

This primer is the essential first step for all exterior wall coating systems, including texture paints, stone-effect coatings, and standard masonry paints. It is ideal for application on new concrete, cement mortar renders, and fiber cement boards. It is also an excellent choice for revitalizing older facades, as it reinforces the substrate and ensures the final waterproof coating adheres perfectly, preventing future peeling or moisture ingress.

After-sales Service

We believe our responsibility starts-not ends-when the product leaves our factory. We provide a comprehensive technical support system for our global partners. If your construction team encounters a unique substrate or a challenging weather condition, our senior engineers are available for remote video consultations to provide precise application advice. We stand by the performance of our products and offer rapid response for any technical inquiries, ensuring your project proceeds smoothly from start to finish.

Certification

Our quality is validated by international standards and national recognition. We operate under ISO-compliant management systems and have been awarded the status of National High-Tech Enterprise. Our patents cover various dimensions of material science and structural design, providing a legal and technical moat for your business. When you show our certifications to your clients, you are providing verifiable proof of a product that meets the highest benchmarks of the modern construction industry.

Customization Power

Our "Zhejiang Provincial Technology-Based SME" status is built on our ability to solve specific customer problems. We can customize the formula of the primer to suit specific humidity levels or to include anti-fungal properties for tropical regions. Furthermore, we offer flexible branding options, allowing you to market our high-quality formulas under your own label with customized packaging that meets your local regulatory requirements. Our goal is to empower your business with a product that feels uniquely your own.

Factory Strength

As one of the earliest and largest specialized production bases for dry-mix mortar and construction additives in Zhejiang Province, we not only possess modern intelligent manufacturing workshops but have also been recognized as a Municipal Enterprise R&D Center. More than 20 years of deep cultivation have allowed us to accumulate a profound manufacturing foundation, with an annual production capacity that ranks among the top in the industry. Since our first production line went into operation in 2003, we have maintained a strict respect for cutting-edge technology, ensuring that every drum leaving our factory represents the true standard of high-end Chinese manufacturing.