Promac Rubber Duck Damp Guard is a single-component acrylic primer and moisture barrier designed to treat rising damp and penetrating moisture in masonry surfaces. It forms a dense, water-resistant film that protects walls while ensuring strong adhesion for subsequent coatings.
 
This product is specifically formulated for use on plaster, concrete, cementitious, and fibre cement surfaces, where damp conditions can cause paint failure. It adheres effectively to both damp and dry substrates, making it a reliable solution for problem areas where standard primers cannot perform.
 
By sealing the surface and preventing moisture ingress, Damp Guard helps stop issues such as peeling paint, bubbling, and staining, ensuring a longer-lasting and more durable paint system