Waterborne polyurethane is becoming more and more popular in various construction projects due to its environmentally friendly properties and excellent performance. However, water-based polyurethane differs in its application method compared to traditional oil-based polyurethane. Many applicators face challenges when working with water-based polyurethane, such as ensuring even application, avoiding air bubbles and improving adhesion.
Improper application methods will not only affect the performance of water-based polyurethane, but may also result in poor final results such as uneven coating, prolonged drying time, or insufficient adhesion. These problems not only increase the cost of materials and labor, but may also affect the quality and schedule of the entire project.

The following is the construction method of water-based polyurethane：

1.Introduction to polyurethane

Polyurethane is a versatile synthetic resin widely used in coatings, adhesives and foams. Water-based polyurethane is an environmentally friendly product that uses water as the diluent and is safer and easier to clean than traditional oil-based polyurethane.

2.Correct construction steps for water-based polyurethane

Surface Preparation: Make sure the construction surface is clean, dry and free of dust. Sand if necessary to improve coating adhesion.
Application tool selection: Use specialized rollers or brushes. Make sure tools are clean to avoid introducing impurities.
Apply evenly: Apply water-based polyurethane in a thin, even layer. Avoid applying too thickly at once to reduce bubbles and unevenness.
Pay attention to drying time: allow ample drying time after each layer is applied. Adjust drying time based on temperature and humidity.

3.Follow-up processing and maintenance

Secondary application: After the first layer is dry, you can apply a second or more layers as needed, and each time you need to fully dry.
Final inspection: After all coats are completed, check for any missed or uneven coatings and repair them.
Regular maintenance: Once the water-based polyurethane coating is complete, perform regular cleaning and maintenance to extend its life.

Through the above methods, water-based polyurethane can not only provide excellent protection and aesthetics for your project, but also meet environmental requirements. Correct construction methods can maximize its performance and ensure construction quality. Hopefully this information will help you apply water-based polyurethane more effectively.
​