Flat roof waterproofing: effective methods for long-lasting protection

Waterproofing flat roofs is a crucial aspect of protecting buildings from water infiltration and structural damage. Since flat roofs do not allow natural runoff of rainwater like pitched roofs, it is essential to adopt reliable and durable waterproofing systems.

water
Admixed
concrete
CRYSTALS

Why waterproof a flat roof?

Flat roofs are particularly exposed to the elements, and without adequate waterproofing, the following can occur:

  • Water infiltration that compromises the building's structure
  • Damage to insulating materials, reducing energy efficiency
  • Formation of mold and moisture, with negative impacts on the healthiness of indoor environments.
  • Deterioration of concrete or underlying surfaces.

To avoid these issues, selecting the right waterproofing system is essential.

Types of waterproofing for flat roofs

1. Waterproofing with bituminous membranes

Bituminous membranes are one of the most common solutions. These are prefabricated sheets that are applied hot to the roof surface, creating a water-resistant barrier. They are suitable for residential and industrial buildings and have a long lifespan.

2. Waterproofing with synthetic membranes (PVC or TPO)

Synthetic membranes, such as PVC and TPO, offer a lighter and more UV-resistant alternative to bitumen. They are easy to apply and guarantee excellent performance even in extreme climatic conditions.

3. Liquid waterproofing with polyurethane or acrylic resins

Liquid membranes represent an innovative and flexible solution. They are applied by spraying or rolling, creating a continuous, joint-free membrane, ideal for complex and irregular roofs.

4. Waterproofing with a crystallizing system

Crystallizing waterproofing technologies, such as DRYMIX ULTRA, offer long-lasting protection to concrete by penetrating the material matrix and sealing the pores from the inside. This system guarantees high water resistance even in high humidity conditions.

What is the best solution?

The choice of the most suitable technology depends on several factors:

  • Type of building (residential, industrial, commercial)
  • Climatic conditions
  • Need for roof trafficability
  • Durability and required maintenance

For a new flat roof construction, bituminous or synthetic membranes are often the ideal choice. For the restoration of existing roofs, liquid resins or crystallizing treatments can offer an effective solution without having to remove the pre-existing materials.

Conclusion

A properly waterproofed flat roof ensures long-lasting protection, greater energy efficiency and reduced maintenance costs.

Relying on quality materials and experienced professionals is essential to achieve optimal results and prevent future damage.

If you need a customized solution for your roof, discover Drykos solutions for flat roof waterproofing.

10
years of experience
80
products
15

MLN

square meters of surfaces
waterproofed
operating in
4
continents
100

%

recyclability
65

%

reduced ecological
footprint