Waterproofing clamps becomes necessary when they are fixed on a coating; the most frequent cases involve fixing solar/photovoltaic plants, bright signs and air treatment plants. Neglecting this operation means creating a way for rainwater and therefore a possible seepage. RESIFLEX 145 is s single-component polyurethane which hardens when it gets in contact with air: it preserves elasticity and adhesion for a long time ensuring the effectiveness of the operation.