Poor concrete preparation is one of the most common reasons a polyurethane expansion joint fails earlier than expected. Even a high-quality polyurethane sealant will struggle to perform if the joint hasn’t been properly cleaned, dried, profiled and prepared before application. Dust, moisture, oils, old sealant and weak concrete can all interfere with adhesion. Over time, … Continue reading How to Prepare Concrete Before Applying a Polyurethane Expansion Joint