In both new construction and renovation projects, properly waterproofing your terrace is essential to protect the underlying structure from water damage. Follow these proven steps and best practices for long-lasting results.
Waterproofing decisions often arise from visible signs of infiltration. On roof terraces, look for damp spots on walls and ceilings below, along with high humidity levels. On the surface, watch for cracks in concrete, swelling or buckling slats, loosening tile slabs, and mold growth.
Stains on baseboards, joints, or edges signal moisture issues from poor sealing. Cracks can lead to serious water damage if unaddressed. Use a humidity tester to pinpoint sources, or perform a dry-weather impoundment test to trace exact leak points.
To combat infiltration and stagnation, select from two primary approaches. Sealing creates a solid barrier on the slab to block water passage—ideal for terraces above living spaces. Water-repellent waterproofing promotes drainage and prevents pooling, best suited for terraces without rooms underneath.
Options vary by project type. For new construction, calandrite—a rolled bitumen membrane with non-woven polyester reinforcement—provides robust protection against water, snow, and air when installed during building.
Versatile alternative: Acrylic resin works for both renovations and new builds. Start by pressure-washing the surface to remove mold and debris. Seal cracks with deck putty applied via caulking gun. Apply the resin evenly and allow it to cure fully.
For safeguarding wooden slabs or tiles, hydraulic sealing mortars form durable waterproof membranes. Bitumen layers offer excellent protection but require professional application for optimal results due to their complexity.
