Cortex - UV Resistant Elastic Polyurethane Waterproofing Coating
Cortex
Cortex© is a polyurethane based liquid waterproofing coating that forms an elastic and UV resistant film on the surface to which it is applied.
Cortex© has been developed for use on exposed terrace and roof surfaces. Once cured, the film retains its elasticity even under direct sunlight and accommodates the expansion and contraction movements caused by temperature changes. Because it is applied in liquid form it takes the shape of the surface slope and detail geometry, creating an uninterrupted layer at points such as drain surrounds and parapet upstands. On surfaces that are not covered with an overlying finish, this structure prevents water from penetrating into the building while the coating itself also acts as a protective layer.
Cortex Functions
UV Resistance
Waterproofing
Cortex© forms an uninterrupted film on the surface, preventing water from penetrating into the building. Because it is applied in liquid form it takes the shape of the surface slope and detail geometry.
UV Resistance
The cured film retains its structure even under direct sunlight. This allows it to be used on exposed terrace and roof surfaces without the need for a protective layer.
Elasticity
Cortex© accommodates the expansion and contraction movements caused by temperature changes. Movements occurring in the surface do not compromise the integrity of the film.
Surface Protection
The waterproofing layer itself also serves as the protective layer of the surface against external effects. Compared with applications that require a separate protective layer to be laid, the number of layers is reduced.
UV Resistant Film for Exposed Surfaces
Cortex© has been developed for use on surfaces that are not covered with a protective finish. Once cured, the film retains its structure and elasticity even when exposed to direct sunlight, and accommodates the expansion and contraction movements arising from the temperature difference between summer and winter. The waterproofing layer therefore also acts as the protective layer of the surface against external effects, and no separate protective layer is required in the application.
Cortex Features
- A polyurethane based liquid waterproofing coating
- Forms an elastic film once cured
- Resistant to UV exposure and suitable for use on exposed surfaces
- Accommodates expansion and contraction movements caused by temperature changes
- Because it is applied in liquid form it takes the shape of the surface slope and detail geometry
- Creates an uninterrupted layer at points such as drain surrounds and parapet upstands
- The waterproofing layer also serves as the protective layer of the surface
Frequently Asked Questions
1. What Is Cortex?
Cortex© is a polyurethane based liquid waterproofing coating that forms an elastic and UV resistant film on the surface to which it is applied. It has been developed for use on exposed terrace and roof surfaces.
2. On Which Surfaces Is Cortex Used?
It is used in areas that are not covered with a protective finish, such as terraces, roofs and balconies. Because it is applied in liquid form it takes the shape of the surface slope and creates an uninterrupted layer at detail points such as drain surrounds and parapet upstands.
3. Can Cortex Be Used on Surfaces Exposed to Sunlight?
Yes. The cured film is resistant to UV exposure and retains its structure under direct sunlight. For this reason no separate protective layer needs to be laid over it, as the waterproofing layer itself takes on the role of the protective layer.
4. Is Cortex Affected by Temperature Changes?
Once cured, Cortex© gains an elastic structure and accommodates the expansion and contraction movements arising from the temperature difference between summer and winter. These movements occurring in the surface do not compromise the integrity of the film.
5. What Is the Difference Between Cortex and Purtex?
Both products are polyurethane based liquid waterproofing materials. Purtex© provides resistance to substrate movement through its fleece reinforced structure and is preferred for applications that are subsequently covered. Cortex© has been developed for exposed surfaces and, thanks to its UV resistant film, can be used without requiring a protective layer.
6. How Many Layers Does a Cortex Application Require?
Because the waterproofing layer also works as the protective layer of the surface, there is no need to lay a separate protective layer. This reduces the total number of layers compared with systems that require a protection layer on top. For application thickness and the number of coats you can review the values in the datasheet section.