Holedeck contributions that increase health security against pandemics such as COVID-19


Edificio de oficinas LOGYTEL I+D ejecutado con forjado Holedeck


Sick Building Syndrome (SEE) thus Sick Building Syndrome (SBS) is the name given to the set of diverse symptoms that are not generally accompanied by any organic lesion or physical sign that individuals present in affected buildings, individuals, present in affected buildings.

In practice sick buildings are a part of buildings that present problems: its occupants present complaints regarding their health in a higher proportion than it would be reasonable to expect (>20%) and the causes are difficult to identify since in many cases they have a multifactorial origin (1).

As a reference figure, consider that 35 a 45 millions of Americans suffer symptoms associated with SEE / SBS. According to the EPA (Environmental Protection Agency, U.S.A.) the indoor air becomes 6 a 10 times more polluted than the outside (2).

The SEE/SBS can be developed thanks to environmental pollutants, smells, absence of negative ions, Inadequate lighting, noise, vibrations, lack of thermal comfort, inadequate relative humidity, insufficient ventilation or diverse psychosocial factors (3).

Given this reality, it seems necessary to improve Indoor Air Quality Control (CCAI) to detect cases of inadequate ventilation (physical parameters), as well as the presence of chemical pollutants from inside or outside the building (chemical parameters), from biological contaminants in the air circulating through the ventilation system (microbiological parameters).




Biological contaminants in many cases come from bio-aerosols (airborne particles, made up of living things, or substances that have been released by a living being) against whose presence we can only act by eliminating contaminated materials and therefore the source of internal amplification and dissemination.

"Studies in Europe suggest that SBS is associated with mechanical ventilation systems that use humidifiers and refrigerants […] Specifically, the area of ​​surfaces with fleecy materials, wallpapered surfaces, and the allergenic amount and proportion of soil dust have been linked to the incidence of disorders. The origin of poor indoor air quality may be different for different buildings, sometimes being the ventilation system itself " (4).

El polvo es el principal agente transportador de sustancias alérgicas, composed of a wide variety of organic and inorganic elements, which include fibers, spores, pollen grains, mohos, insects and mites; se estima que aproximadamente de un 40 yet 80% asthmatics are sensitized to some of these compounds and the symptoms it produces range from a slight irritation to serious respiratory problems, que pueden derivar incluso en patologías crónicas.

Dirt encourages the growth of aerobes and fungi, this being the cause of more than 37% of sick leave and the ailments caused by the so-called Sick Building Syndrome (allergies, Headaches, eye and ear irritations, respiratory problems, pneumonia, etc)


Interior of conventional ventilation ducts with accumulated dirt




The ills associated with Sick Building Syndrome are especially worrisome in the case of hospitals and health centers, where the joint and constant presence of patients (immuno-depressed in many cases) and visitors from abroad aggravates the large number of Nosocomial infections (acquired inside the health center) and respiratory ailments.

It is contradictory to find spaces that are difficult to access and accumulate dirt in places that require maximum hygiene and asepsis..

The ventilation ducts in health centers they must be provided with records for inspection and cleaning according to the standard UNE-ENV 12097, Hygienic checking of air conditioning installations is especially necessary in class I environments. (5).

According to the Regulations A6-0239 / 2009:

“(b) potenciar la prevención y la lucha contra la infección en los centros asistenciales and guarantee the highest level of cleanliness, hygiene and, if required, of asepsis ”

"To prevent nosocomial infections it is necessary to guarantee the highest possible level of cleanliness, hygiene and, if required, asepsia de todos los materiales con los que los pacientes estén en contacto” (6),

Comparison and advantages of Holedeck compared to conventional systems



Faced with this problem, what does HOLEDECK provide??

A simple solution: make ventilation and air conditioning ducts fully accessible to non-specialized cleaning personnel.


HOLEDECK slab treated with anti-mold paints in LOGYTEL R&D office building


Operator incorporating facilities in forged Holedeck



You can consult Regulations and Legal Supports by clicking here.


[1] Ministry of Labor and Social Affairs: NTP 289Sick Building Syndrome: risk factor's”. Mª José Berenguer Subils, . INSHT

[2] Data from IBE: The International Institute for Bau-biologie® & Ecology is a non-profit educational organization founded in 1986 / 501(c)(3). (http://hbelc.org/).

[3] Ministry of Labor and Social Affairs: NTP 289Sick Building Syndrome: risk factor's”. Mª José Berenguer Subils, . INSHT

[4] Ministry of Labor and Social Affairs: NTP 288 Sick building syndrome: related diseases and the role of bioaerosols ". María del Carmen Martí Solé and Jordi Obiols Quinto, . INSHT

[5] Ministry of Labor and Social Affairs : Table 8 of the document NTP 859 "General ventilation in hospitals" . INSHT

[6] European legislation A6-0239 / 2009, "Proposal for a Council Recommendation on patient safety, en particular la prevención y lucha contra las infecciones relacionadas con la asistencia sanitaria” Enmienda 28 Propuesta de recomendación Parte I – chapter III – point 1 – Letter B