Terrace Waterproofing

Roof/Terrace Area TERRACE WATERPROOFING Roof/Terrace Area TERRACE WATERPROOFING Roof/Terrace Area TERRACE WATERPROOFING Roof/Terrace Area TERRACE WATERPROOFING Roof/Terrace Area TER Leakage through the terrace frequently causes serious moisture in the ceilings, ruining the appearance of expensive furnishings and causing the roof slab and concrete to deteriorate. The following critical parameters influence the material selection:

A top coat system is applied when a surface’s existing slope is solid, and there are no difficulties with water retention or voids.
While treating a mother slab, an undercoat system is utilised, followed by a slope screed.
If the present slope exhibits signs of water logging or extreme hollowness, the sloping screed is removed to expose the mother slab, and then an undercoat system is applied, followed by a screed.

The solutions vary depending on whether it is an undercoat or a topcoat.

Suganthtechnology’s recommended solution for undercoat systems is:

Two types of polyurethane coating systems exist.
Pitch-modified PU — Pitch is a resin-like bitumen, coal tar, etc., that makes such a system when coupled with PU. These systems are utilised as an undercoat for wide-span regions; they are very extensible and extremely durable.
Pure PU
Before application of these systems, all joints, honeycombs, and voids must be filled with PMM (Polymer Modified Mortar)/Non-Shrink repair mortar. Around each corner, a minimum 50x50mm angle fillet must be created using PMM. Bore packing must be performed with non-shrinking grout such as GP2. The Surface must be thoroughly dry.

If concrete is not completely dry, a water-based primer can be substituted for a solvent-based one; for example, Silcor Primer BS can be replaced with Silcor Primer BW N105, and Microsealer 50 can be replaced with Aquasmart DUR Primer (2k).

Cracks, voids, etc., should be fixed with PU Sealant only after applying the primer.

Polymer-based Elastomeric Cementitious coating systems are high-performance elastomeric cementitious coatings used for waterproofing and protecting atmospherically exposed reinforced concrete structures against attack by acid gases, chloride ions, oxygen & water.
These solutions are suited for new and existing structures, as they may be applied to concrete, brick, and block surfaces. The solution is intended to resurface and level concrete and masonry surfaces and bridge shrinkage fractures. It produces a seamless, flexible, waterproof coating that is appropriate for water tanks, reservoirs, drainage ditches, basements, and roofs. These materials create a water-resistant, lasting covering. These systems are favoured for use as undercoats because they are not UV-stable.

Before application of these systems, all joints, honeycombs, and voids must be filled with PMM (Polymer Modified Mortar)/Non-Shrink repair mortar. Without an angle fillet, a minimum of 50 x 50 mm of PMM must be applied to each corner. Bore packing must be performed with non-shrinking grout such as GP2. The state of the Surface must be SSD.

Moreover, depending on the porosity of the concrete, a silicon-based sealer such as Zycosil or an acrylic-based sealer such as La Brush seal may be applied before the cementitious waterproofing system.

These coatings are UV-resistant and can withstand light/moderate foot usage. Depending on the colour and SRI Value, they may also be utilised as a heat-reflective coat in specific instances. It is further subdivided by the basic material employed.

Polymer-based methods include single-component acrylic coating systems, which are elastomeric, flexible, and durable enough to be left uncovered. Moreover, they may be exposed to light foot traffic. The state of the Surface must be SSD.
Hybrid PU-These coatings are a blend of polyurethane and acrylic chemicals. The state of the Surface must be SSD.
Pure polyurethane-based coating systems might be single or two components. These solutions have a high elongation and can be applied over expansive areas. Before applying these systems, all joints, honeycombs, and voids must be filled with PMM (Polymer Modified Mortar)/Non-Shrink repair mortar. At all weak spots/zones, pressure grouting with PRAN (Permeability Reducing Admix for Non-Hydrostatic Conditions). Without an angle fillet, a minimum 50x50mm PMM joint must be created between the base slab and the wall. If the substance has a solvent base, it must be entirely dry.