Insights & Blog

Choosing the right waterproof coating is essential for durability, lifecycle cost, and overall project performance. Among the most widely used options—polyurethane and acrylic—buyers often struggle to identify the best choice. This guide clearly compares their performance, application methods, and ideal use scenarios so you can select the most suitable system with confidence.

Key Properties Comparison

Elasticity & Crack Bridging

Polyurethane: Exceptional elasticity (up to 1000% elongation). Highly effective for dynamic cracks in concrete substrates.

Acrylic: Good flexibility but lower than polyurethane. Suitable for minor non-moving cracks.

Weather & UV Resistance

Polyurethane: Requires a UV-resistant topcoat for long-term outdoor exposure to prevent yellowing or degradation.

Acrylic: Naturally UV-stable with excellent weather resistance; retains color and flexibility under sunlight.

Application & Drying Time

Polyurethane: Mostly solvent-based or two-component; requires accurate mixing and professional application. Curing is relatively slow.

Acrylic: Water-based, easy to apply, quick drying, low VOC—ideal for fast-track projects.

Still not sure which coating matches your project? Contact Longwe Global’s technical specialists for free guidance, product data sheets, and samples.