Waterproofing has never been easier. That’s because we have technology on our side to produce environmentally friendly products. These products are ready to use on all sorts of surfaces.

Take, for example, water-based polyurethane Class III waterproofing membrane. This is an amazingly useful product, and you can have a blast waterproofing just about anything and everything with it.

Suitable Surfaces

Good candidates for a couple of coats of polyurethane membrane include most common building surfaces. PU membrane is suitable for cement renders and screed, and prepared metal surfaces. It can also be used on composite building boards such as compressed fiber-cement sheeting.

Ordinary brick, cement blocks, and wood also receive this product well.


What’s so great about this water-based polyurethane Class III waterproofing membrane? It can be applied to interior and exterior surfaces. It’s a one-size-fits-all kind of product.

Exterior surfaces include flat roofs, terraces, decks balconies, and walkways. It is also useful when waterproofing basements since it can be applied to the floors, walls, and even ceilings. Our coolest tip in this article is that you can use it as a base coating in showers and bathrooms before tiling.

Imagine – all those waterproofing uses from the same non-toxic, UV-stable substance!

Eco-Savvy Waterproofing

Class III PU membrane is an eco-savvy product with a very low VOC. Volatile organic compounds (VOC) are the toxins released into the atmosphere while the product is being applied. Ready-to-use products such as k10 plus waterproofing have an impressively low VOC, at 40g/liter.

PU membrane is also solvent-free, which means that it can be safely used in confined spaces.

Ease Of Application

Aside from being an eco-savvy and solvent-free, PU membrane is as easy to apply as paint is. You simply use a roller or a brush, depending on the type of surface you are waterproofing. Most DIY enthusiasts will love the lack of complications when doing this job.

The important thing to remember is that once applied, this polyurethane preparation forms a seamless membrane.  There are no joints or any possibility of leaks. That’s assuming that you follow the instructions that come with the product.

This is an excellent job for the weekend since curing time is 6-8 hours at around 22°C. Most surfaces will need two or three coats, so you’ll need to plan quite well.

Coverage will vary depending on what you are waterproofing. For interior walls, you probably need a 20-liter bucket for 22 square meters. For exposed exterior areas, which require heavier coats, that same 20 liters of PU membrane will cover about seven square meters.

Durable And Sustainable

Using an eco-friendly waterproofing method such as a water-based polyurethane Class III waterproofing membrane is the smart thing to do. Aside from it being kind to the environment, and therefore sustainable, it is also long-lasting.

So, why don’t you get your tools together try it out on a small project first? We’re convinced that will be enough to make you want to do more – and start waterproofing anything and everything.