How to Waterproof a Terrace


Waterproofing your terrace is essential to protecting it against rain, humidity and ground moisture. There are various methods available for waterproofing such as Bitumenous coating or Polyurethane Liquid Membranes which may provide needed protection.

ECMAS offers high-grade pure polyurethane and polyurea liquid membranes designed to meet the demands of large terrace structures, featuring exceptional durability and flexibility as well as temperature variance resistance. These membranes can withstand temperature variations for ultimate performance on any terrace structure.

Bituminous Coating

Bituminous coating is a type of terrace waterproof coating paint used to protect metal and concrete structures from corrosion in harsh outdoor environments, as its waterproof qualities prevent water and air from coming in contact with substrates it covers. Furthermore, this type of protection offers outstanding durability, flexibility, chemical and UV attack resistance as well.

Bituminous waterproofing paint is typically applied to porous surfaces such as pavements and concrete walls, mixed with solvents to form an appropriate consistency suitable for application by dipping, brushing, or spraying at ambient temperatures. The properties of such coatings depend on their intended use and service conditions – for instance they can be designed with increased abrasion resistance for applications such as protecting rail cars transporting solids or slurries that corrode them over time.

Before applying any waterproofing coating, it’s essential that the surface be clean and free from debris. Wear protective clothing and a mask while working so as not to inhale any solvents from solvent-based paints or coatings, then spread a thin coat of bituminous waterproofing paint using either a brush or roller.

Polyurethane Liquid Membrane

Polyurethane liquid membranes are highly effective at preventing water ingress and have incredible resistance to weathering, making them an excellent choice for rooftop and balcony waterproofing. Plus, their flexible nature means they move with structures without tearing.

It can be applied to concrete and wooden surfaces, and is ideal for areas exposed to sunlight. A primer coat should be applied first as this will seal pores and stabilize your substrate – you can either brush or spray this product onto surfaces, although always refer to your manufacturer’s product data sheet to determine whether you require further thinning of your waterproofing coating or not.

This system is a cold applied, liquid applied high density polyurethane waterproofing membrane made up of two components – polyol and isocyanide – combined in an exact proportion to create a UV-resistant monolithic membrane with excellent thermal expansion and contraction abilities as well as water vapor condensation resistance.

Acrylic Waterproofing Paint

Acrylic paints are known for being tough and long-wearing. But without proper waterproofing measures in place, your painting could quickly be destroyed by water splashes or raindrops. Use an acrylic sealer or varnish specifically formulated to work with acrylics to avoid this situation.

Waterproofing paints contain thickeners designed to produce coatings with the appropriate rheology (or consistency), or rheology. Rheology plays an essential role in application efficiency, sag resistance (when waterproofing vertical walls), and overall coating performance – therefore choosing thickeners carefully is one of the keys to developing long-term elastomeric acrylic waterproof coatings.

Waterproofing paint offers many advantages for users, including being safe and non-toxic to use, being easy to apply, dries quickly, being flexible with applications on surfaces like concretes, and its elastic properties that contract to expel rainwater preventing its penetration into structures. Furthermore, its UV ray protection means it will not fade over time – plus its relative affordability!

Polyurethane Waterproofing Paint

Contrasting with cementitious waterproofing, this paint is lightweight and simple to apply, plus resistant to UV radiation and abrasion. Suitable for application on various terrace surfaces like concrete and masonry; however it is advised that a professional is consulted prior to selecting this option.

Polyurethane Waterproofing paint is a chemical reaction type of waterproof coating with an extremely elastic rubber-like film after curing, designed to withstand contraction and expansion as well as extreme weather conditions such as rain, snowfall, heatwaves, or humidity levels.

Polyurethane sealant products consist of two main ingredients, polyether polyol and isocyanate, mixed together with additives to produce a thick plastic film sealant sealant sealant sealant available both oil- and water-based formulations. However, oil or water-based polyurethane do not make surfaces waterproof – only paint additives do. Therefore this type of waterproofing requires an extra step – applying a top coat after the initial layer has set for several days is best; any waxes or products which could degrade polyurethane performance should also be avoided as these could compromise its performance.


There are numerous epoxy resins used in construction. Each has unique properties and applications; for instance, some types are best used as waterproofing paint while others can help protect metal surfaces against corrosion. When selecting an epoxy for coating applications, make sure it matches up well with what type of surface you plan to coat.

Terraces can become susceptible to water infiltration and require special care in their waterproofing treatments, so choosing an effective waterproofing paint such as Nippon Roof Coat that can withstand both water and chemicals is key for long-term terrace enjoyment. Not only is Nippon Roof Coat water-resistant but durable too – with features that prevent fungal and algal growth as well as having antifungicide and algaecide properties which protect it further from future damages.

Add an ultra-durable polyurethane coating to your terrace for increased weatherproofing and chemical resistance, including resistance against acids, alkalis, petroleum products, solvents, salts and freshwater. Furthermore, this material can withstand extreme weather conditions such as scorching heat, gusty winds and heavy rainstorms.



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