External walls are made with slabs, beams and columns and the outer structure is exposed to harsh weather conditions causing it to degrade. Most often developing cracks which on a rainy season is nothing but a threat to the building structure as the rain water seeps into the interiors from the exterior of the cracks. At waterproofing concepts an advanced Polyurethane based insulation covers the surface, fusing the cracks and preventing water seepage from the exterior of the building to the interiors.