The safety and healthiness of buildings generate a lot of discussion and evokes emotions for their occupants. In marketing, you can see various claims about the health benefits of certain materials or solutions. We aim to contribute to this discussion by focusing more on the overall perspective. Renevations functionality and healthiness are composed of many factors, not just one or two products.

In this matter, the effectiveness of the end result starts from the design table, whether it is a new construction or a renovation. Building physics must be managed properly to avoid solutions that cause problems later on. A classic example is enhancing the ventilation of an old house. Without adding enough air change or sealing leaks from the wrong places can actually increase indoor air impurities.

Indoor air quality is affected by both the materials and the space is used. Indoor air impurities and odors can be caused by many different substances, of which volatile organic compounds (VOCs) are just one part. More information can be found at www.hengitysliitto.fiIt is important to note that no single product, such as "air-purifying" paint, can control the overall quality of indoor air.

The M1 classification is one way to officially measure and classify the emission levels of building materials. This is an official statement, not based on the manufacturer's own claims (read more at https://ymparisto.rakennustieto.fi/rakennusmateriaalien-paastoluokitus). Therefore, it is always advisable to check that the surface materials being used have an M1 classification in order. Additionally, choices in furniture and textiles can impact the cleanliness of the space. Those who value good indoor air should also pay attention to the chemicals used in cleaning, their fragrances, and composition.

The structural functionality of a building is a prerequisite for its preservation as well-maintained and healthy. For example, the structure of the maligned "plastic bag house" is a perfectly good solution when executed correctly. In this case, the trinity of indoor air temperature, humidity, and ventilation must function correctly to prevent moisture condensation in wall structures that could cause moisture damage. As our engineer once said, it is important to remember that no house or material actually "breathes." It's always about physics, moisture and air permeability, and the direction in which air moves within the structure. Structural damages are a separate issue, where identifying and correcting the root cause are necessary for the building's health. If water is leaking from the base of a chimney, it doesn't matter whether it's a log house or a wooden element; moisture will cause damage over time. During repair construction and renovation, structural integrity must be considered to ensure the outcome is functional. The building's lifespan also extends when materials are maintainable and repairable.