Sealing of concrete panels


Job: sealing of concrete panels of a warehouse.
Location: Guadalajara.
Linear metres of façade: 17,000.
Company carrying out the sealing work: SEIMPA.

We moved to a new construction site in Guadalajara. The work was carried out by the company SEIMPA: A national company integrated in the construction sector with more than 35 years of experience. Specialised in sealing services, waterproofing, thermal insulation, vertical works, paving, facade cleaning, among others.

It is made up of highly qualified professionals and uses top quality products to always comply with the maximum requirements and regulations in force.

The project consisted of the exterior sealing of all the construction joints of a prefabricated concrete building of about 17,000 linear metres of façade.

In addition, it also carried out the interior sealing of joints between precast concrete panels for the fire compartmentalisation of areas with different uses in the building.

Why is it important to carry out a good sealing?

Good sealing is crucial to maintain the watertightness and integrity of a structure, especially in terms of waterproofing and thermal insulation.

When joints are not properly sealed, water and moisture can penetrate the structure, which can lead to degradation of materials and damage to the structure as a whole. It can also decrease the effectiveness of thermal insulation, which can lead to an increase in energy consumption for heating or cooling a building.

In addition, it is important that the sealing allows for expansion and contraction of the structure due to temperature changes and other environmental factors. If joints are sealed too tightly, this can lead to stresses in the structure and cause long-term damage.

Sealing of concrete panels

Why PU FACADES is the ideal sealant for this type of exterior sealing? 

The product chosen to carry out the exterior sealing work on the panels was Quilosa Professional PU Facades; it is our old PU 40 Professional, but with an improved, high quality formula that offers the best performance and meets market requirements.

Quilosa Professional PU Facades is a low modulus, single-component polyurethane sealant, especially for sealing joints in facades.

Its innovative formulation contains less than 0.1% free monomer (tested), does not form bubbles during curing (guaranteed) and has a high resistance to ageing and UV radiation.

PU Facades polyurethane sealant offers several advantages that make it the best choice for sealing jobs. Some of them are:

Sealing of concrete panels


  • Resistance to weathering and UV radiation: PU Facade Sealant is designed to withstand exposure to weathering and UV radiation, ensuring its durability over time.
  • High chemical and mechanical resistance: The product has a high chemical and mechanical resistance, which makes it resistant and suitable for use in a wide variety of applications.
  • Excellent adhesion: PU Facade Sealant adheres effectively to most building materials, which guarantees its effectiveness in sealing joints in facades.
  • High elasticity: The product has a high elasticity, which allows the joint to work through its expansion and contraction movements, thus maintaining the tightness and insulation of the façade.
  • Easy application: The product is easy to apply, allowing it to be used without complications and without the need for specialised equipment or tools.

The PU Facades sealant complies with the regulations required on site, which guarantees safety in its application and a quality result.

PU Facades polyurethane sealant is an excellent choice for sealing joints in facades, thanks to its high resistance, elasticity and adhesion, as well as its ease of application and compliance with regulations.


If a building is not specially designed for fire protection, it is often partially or totally consumed by fire, so it is absolutely essential for the safety of buildings, especially for the safety of people, to implement passive fire protection solutions.

Thanks to the implementation of an adequate passive fire protection system, we can stop the spread of fire and contain it at the place where it originates, for long enough to allow an effective evacuation, facilitating the action of the fire brigade and minimising material damage.

Apart from that, proper sealing of pipe and cable passages prevents smoke and toxic fumes from penetrating into other rooms, which is also vital for evacuation.

Quilosa Professional SINTEX AC 41 was used for the interior sealing of joints for the fire compartmentalisation of the different areas.

This is a very versatile product with up to 4 hours fire resistance (RF/EI). The product retains its flexibility at temperatures ranging from -20º to +80º.

It is SNJF Façades certified. It is also A+ certified, as it is a very low emission product.

Thank you SEIMPA for continuing to trust us and our products for the development of new projects!

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