Microcement has grown in popularity for its aesthetic appeal and functionality, especially in wet rooms such as bathrooms and kitchens. But when it comes to waterproofing, there is a compelling question that many ask themselves: Can microcement actually replace a membrane? This question is critical in planning a waterproof area to prevent damage to structures and underlying surfaces. In this blog post, we will explore the role microcement plays in waterproofing and whether in some circumstances it can serve as a substitute for a waterproof membrane.
What is a membrane?
Before we dive into microcement's potential waterproofing properties, let's first understand what a membrane is. A waterproof membrane is a thin sheet or liquid that is applied to a surface to prevent water ingress. In a construction context, the membrane is used to protect constructions against moisture and water damage.
Microcement's waterproofing properties
Microcement is a polymer-reinforced concrete mass that is applied as a thin layer and can provide a certain degree of waterproofing. This finish is popular for its ability to resist moisture and create an impressive, seamless surface.
When used correctly, microcement can help prevent superficial water intrusion. But it is important to note that even though microcement is water-resistant, it is still possible for water to penetrate, especially in the case of, for example, cracks forming as a result of movements in the substrate or the building.
Is microcement a separate membrane alternative?
Let's clarify this point: Although microcement is water resistant, it is not recommended to use it as the only protection against water ingress. A waterproof membrane manufactured specifically to resist penetrating moisture offers an extra level of safety that microcement alone cannot provide.
Microcement over membrane
In practice, it is recommended that microcement is used in conjunction with a membrane, rather than replacing it completely. To create a completely waterproof solution, a membrane can first be laid to ensure protection, followed by the application of microcement for the decorative finish. This method is particularly important in high-risk areas where watertight integrity is essential, for example in showers or around bathtubs.
The importance of professional installation
The installation of both waterproof membranes and microcement should be carried out by a professional. Correct preparation of the substrate, as well as accurate application and sealing, is absolutely necessary to ensure that the microcement's water-resistant properties are maintained.
Conclusion
Microcement cannot replace a membrane when it comes to waterproofing buildings. It is an outstanding material choice for a variety of applications thanks to its attractive finish and water-resistant surface. However, to ensure that your wet room or areas exposed to water conditions remain protected from water damage, it is important to use a suitable waterproof membrane as part of the underlay construction. By recognizing the limitations of microcement and complementing it with correct membranes, one can maximize both the aesthetic and functional value of any construction.
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