What properties of mortar can be improved by redispersible polymer powder (RDP)?

RDP redistributes in water and, after curing, forms a continuous polymer network/film inside the mortar pores and around cement hydration products. This strengthens bonding between particles, improves flexibility, and blocks part of the pore channels—so the hardened mortar becomes stronger in adhesion, more flexible, and more durable.

Let’s get to know basecoat (render) mortar

Basecoat mortar is made by mechanically mixing cement, quartz sand, a polymer binder (redispersible polymer powder, RDP), and various additives. It is mainly used as the crack-resistant protective layer on the outside of the insulation layer in an EPS thin-coat external insulation system (ETICS/EIFS), so it is also called polymer-modified crack-resistant basecoat mortar. It is applied on different types of insulated wall surfaces to form an excellent crack-resistant and water-resistant coating layer. This helps protect the overall performance of the insulation base layer, improves adhesion/compatibility at the interface of the insulation surface, and provides an excellent substrate for the installation of subsequent finishing materials. Basecoat mortar is required to have good workability to make application easier. It also needs high bond strength so that the mortar layer bonds firmly to the substrate, ensuring long-term resistance to cracking and preventing hollowing/debonding and detachment. In addition, when used in humid environments or areas subject to external impact, it should have good water

The versatile additive in the building materials industry, 'redispersible polymer powder'!

Selecting the appropriate additives can yield double the results with half the effort! Redispersible polymer powder is often referred to as the "performance essence" of mortar. It is utilized in products like tile adhesive, waterproof mortar, and crack-resistant mortar, ensuring a worry-free construction process and durable finished products. It stands out as a significant contributor in the building materials sector.

What is the difference between crack-resistant mortar and ordinary cement mortar?

Crack-resistant mortar and cement mortar both belong to the category of pre-mixed mortar. Crack-resistant mortar is mainly a polymer-modified, cement-based plastering crack-resistant mortar, used for surface reinforcement and protective coating on mortar walls and insulation (EIFS) systems.

Special Grout: The Secret Weapon for Building Reinforcement

According to the standard JC/T 986-2018 "Cement-based Grouting Materials," grout is a mixture of cement, aggregates, and additives that exhibits excellent fluidity and injectability. It is typically used to fill voids, reinforce structures, enhance load-bearing capacity, and improve sealing properties.

Introduction to Thermal Insulation Mortar Construction

Inorganic insulation mortar exhibits excellent temperature and chemical stability. The insulation system of this material is made entirely from pure inorganic substances, granting it remarkable resistance to acids and alkalis, corrosion, cracking, detachment, and ensuring overall stability. Consequently, its lifespan is notably extended, comparable to that of conventional building wall materials.

The performance of redispersible polymer powder in tile adhesive

Improve the adhesion and mechanical properties of putty. The redispersible polymer powder is a powder adhesive made by spray drying a specially formulated emulsion (high molecular polymer). This powder can quickly re-disperse into an emulsion upon contact with water, and it retains the same properties as the initial emulsion, that is, it can form a film upon evaporation of water, and this film has high flexibility, high weather resistance and high adhesion to various substrates. Additionally, the redispersible polymer powder with hydrophobic properties can make the mortar have excellent waterproofing performance.

Hualian Top Technology Shinning at the 2025 CHINACOAT

On November 25th, the 2025 China International Coatings Exhibition (CHINACOAT) grandly kicked off at the Shanghai New International Expo Center. The three-day exhibition covers an area of 105100 square meters and gathers 1465 exhibitors from 30 countries and regions. Baoding Hualian Top Technology Technology Co., Ltd. showcased its core redispersible polymer powder technology, excellent products, and full chain services, and won widespread attention from customers from various countries with its strength and innovation.