COSTAR is the world’s leading supplier of unrivalled waterproofing solutions that safeguard structures from the ingression of unwanted water, moisture and environmental contaminants.

We offer specifiers, planning engineers, clients and applicators time-saving, cost-efficient and reliable solutions for effective structural waterproofing, with a unique complete system approach that offers the right combination of concrete repair, waterproofing and sealant products for the most cost-effective, reliable and long-lasting waterproofing solution.