Exterior Wall Filler is a surface-levelling product developed to correct imperfections before painting and provide a more uniform foundation for the topcoat. Listed applications: Filling and levelling concrete, aerated concrete, render and similar mineral exterior surfaces.
Select a filler to improve surface evenness. Consider interior/exterior suitability, defect size and the subsequent primer/paint system together. Deep structural repair is different from fine surface levelling. Remove loose or powdery layers, complete repairs and allow them to dry. Address the source of moisture or staining instead of merely covering it. A test area helps confirm colour and texture.
Before specifying the product, provide the technical team with the substrate, existing finish, service exposure and intended application method. A representative trial helps establish adhesion and appearance; it does not replace the required system approval for demanding exposure. Filler alone does not resolve moving cracks, water ingress or unsound render. Do not transfer the use conditions of an exterior filler to an interior filler or vice versa.