Waterproofing is a specialised process. It involves selecting the correct products and the professional application of the appropriate materials.
Waterproofing extends the life of exterior surfaces, can protect against the rusting of steel reinforcement and minimises concrete cancer.
Factors contributing to defective waterproofing include stress cracks, leaking parapet walls, failing expansion joints, poorly designed flashing and gutters and incorrectly applied membranes.
Without adequate external waterproofing, water can accumulate, penetrate and damage the interior structure of the building.
Opat is an approved applicator for waterproofing product manufacturers and keeps abreast of waterproofing technologies.