The entry of air through the blind box in Spanish homes has become a critical point for energy efficiency and public health. Architecture and construction experts warn that this lack of tightness not only increases the electricity and gas bill by losing between 30% and 40% of the heat, but also acts as an “open door” to structural and respiratory pathologies due to condensation and the appearance of mold inside the homes.
The origin of this problem lies mainly in the absence of insulating material inside conventional drawers, especially those made of thin PVC or wood. As the specialists explain, the design of the blind generates a direct connection with the outside.
“Many times we take for granted that our window is good and that the drawer already has its own insulation, but that is not the case,” says the expert from the specialized channel. Building Houses.
A high risk for your pocket (and health)
The impact of a poorly sealed drawer is multidimensional. On the economic side, heating and air conditioning must work twice as hard to stabilize the temperature, which is a constant waste. Socially, the comfort It is diminished by noise pollution and the whistles produced by the wind when filtered through the conveyor belt.
However, the most severe risk is health. The temperature difference between the cold air outside and the warm air inside generates condensation. This accumulated humidity is the ideal breeding ground for fungal colonies. “Breathing mold spores can cause or aggravate asthma, allergies and other lung conditions,” health experts warn.
Quick and easy solutions
To address this situation, professionals recommend simple but effective interventions. The installation of reflective insulation sheets, a multipurpose material that takes up little thickness, is presented as the most efficient option for renovations. “It is a material that is entering the market strongly; when we see a work, our eyes go to the insulation that shines,” they highlight from Building Houses.
Among the recommended measures to improve watertightness, the following stand out:
- Insulate the interior of the drawer: Place self-adhesive thermal-acoustic insulating panels.
- Motorization: Eliminate the tape to eliminate the main air entry point.
- Sealing joints: Apply silicone or polyurethane foam to the cracks in the lid.
Keeping the mechanism clean and sealed not only protects the well-being of the tenants, but also prevents premature deterioration of the hardware due to the entry of dust and pollution, guaranteeing a longer useful life of the domestic infrastructure.