Morad ventilation grilles – why is the specification not enough?
In construction projects, the technical parameters of ventilation systems are usually reduced to numbers in tables:
heat transfer coefficient,
active field,
flow resistance,
lamella geometry.
These values are important at the design stage, but are only valid in the model.
In a real building, the effectiveness of the system is determined primarily by tightness and quality of details.
Infiltration – the invisible cost of investment
Excessive air infiltration has a direct impact on operating costs:
in winter it causes uncontrolled heat loss,
in summer it leads to the escape of air-conditioned air.
No catalog parameter reflects these losses. They only become visible on energy bills and in user comfort.
What determines the durability of a ventilation grille?
Not just the profile itself, nor the numbers in the specifications. The final effect depends on:
the method of mounting the grille in the partition,
tightness of the contact with the facade,
quality and arrangement of seals,
surface preparation before installation.
Ignoring these details makes the declared technical values lose their meaning.
Material movement - joint test
Aluminum, concrete and glass react differently to temperature changes.
Substrates contract in winter and expand in summer.
In practice, this means that the joint around the ventilation grille constantly changes its width.
If the detail is not designed and executed correctly, the seal will crack or lose adhesion.
And then – regardless of whether the grid had 70 or 90% of the active area – the system loses its tightness.
The most common cause of failure
In nine out of ten cases, the problem is not with the grille itself or the sealant.
It fails surface preparation.
Most common mistakes:
no priming or undercoating,
uncleaned and non-degreased surfaces,
inappropriate application tools,
incorrect joint depth and width.
The consequences include leaks, complaints and costly repairs, and the entire investment loses its intended effectiveness.
Morad – practice instead of theory
That is why Morad designs ventilation grilles with real-world conditions in mind.
The company has been producing aluminum systems in Poland for over 35 years, and thanks to its own powder coating plant (certified QUALICOAT) and prefabrication in Kartuzy is provided by:
quality control from design to finished item,
possibility of making large grates up to 5 m² without additional substructure,
color matching to each facade in the RAL palette,
documentation and technical support for architects and developers.
This approach makes Morad grilles not just a catalogue item – they become part of system facade solutionthat can be safely incorporated into the project.
Summary
Morad aluminum ventilation grilles are designed for investments where not only appearance or numbers in the table count, but above all tightness, durability and predictability in the long term.
The smallest details – preparation of the substrate, quality of seals, correct installation – determine whether the system will last 30 years or fail after a few seasons.
Morad provides solutions that address these challenges – from technical documentation and prefabrication to support for architectural offices and developers.
Specifications are one thing. Actual effectiveness is a well-designed and airtight detail.