Styrene acrylic emulsion

Any professional in the renovation business knows that the biggest headache when renovating old walls isn’t painting—it’s the substrate. After several years or even decades, old walls develop issues such as surface chalking, dusting, and hollow spots. If you simply apply paint directly, it won’t adhere properly and will peel off in large patches before long. Many people assume the paint is subpar, but the problem actually lies in the substrate—the styrene-acrylic emulsion in the sealer and topcoat lacks sufficient adhesion and cannot penetrate the loose substrate, so it naturally fails to bond. To successfully renovate old walls, choosing the right emulsion is more important than choosing an expensive paint.

The issues with old walls are far more complex than those with new walls. The surface may have grease, mold, or loose dust, while underneath there may be highly alkaline cement mortar or an old, chalked-up coating. If you apply ordinary emulsion paint, it will only adhere to the top layer of loose dust. Once that dust falls off, the paint film will peel away with it. A truly effective styrene-acrylic emulsion must have a certain degree of penetrability—it needs to penetrate the loose substrate, “grab” the powder, and then form a continuous, sturdy film on the surface. This dual action of “penetration and reinforcement plus surface film formation” is the key to ensuring that renovations on old walls don’t require rework.

Styrene-acrylic emulsion has a natural advantage in terms of adhesion. The rigidity and cohesion provided by styrene monomers give the paint film sufficient strength to grip the substrate, while the flexibility and adhesion provided by acrylic monomers allow the emulsion to wet surfaces of different materials. When copolymerized, these components not only penetrate the capillaries of the cement substrate but also form a dense coating film on the surface, providing excellent adhesion to cement mortar, old putty, and even smooth tile surfaces. For primer and high-adhesion topcoats used in the renovation of old walls, styrene-acrylic emulsion is the most cost-effective choice.

Jiurunfa has specifically optimized its high-adhesion series of styrene-acrylic emulsions for the old-wall renovation market. Our products penetrate loose substrates more effectively and quickly reinforce surface powdering after application; they also exhibit excellent alkali resistance on alkaline substrates, preventing mottling or peeling caused by alkali efflorescence. Additionally, the products dry at a moderate rate, giving workers ample time to apply them, and achieve excellent sealing results in a single coat without the need for repeated applications. Many clients involved in renovation projects have reported that after switching to our emulsion, the rate of rework on walls has significantly decreased.

In addition to home renovation of old walls, Jiurunfa’s styrene-acrylic emulsion is also suitable for commercial renovation projects, exterior wall refurbishment, and basement moisture protection. Projects such as the renovation of older residential communities, the refurbishment of pre-owned homes, and the repainting of factory and workshop walls are cost-sensitive and have tight deadlines. Using cost-effective styrene-acrylic emulsions for both sealer and topcoats ensures strong adhesion without exceeding the budget. We can recommend the most suitable product grades and mixing ratios based on the substrate conditions and construction requirements.

For many years, Jiurunfa has served paint manufacturers and construction contractors across the country, and we deeply understand the varying adhesion requirements for emulsions in different applications. We don’t just sell raw materials; we also provide application technical support—from substrate preparation recommendations to formulation adjustments, we work closely with clients to fine-tune solutions. If you’re undertaking an old-wall renovation project or looking for a styrene-acrylic emulsion that offers strong adhesion and excellent value for money, please visit the Jiurunfa website to learn more about our products, or contact us directly to request free samples for testing. Minimizing rework in old-wall renovations starts with choosing the right emulsion.

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