3 is a polyethylene membrane that is designed for the drainage and the protection of foundations and basements. It offers a long-lasting protection and a high resistance to air compression: the air flows and your walls remain dry. FONDALINE helps to improve the thermal insulation of your house.

Would you have a question or need an advice, please contact us. 

Let's make the perfect roof

Thousands of users have already chosen Onduline solutions for their projects. Discover sample projects from across the world.