content-img-3The penetration from the outside to the inside from unwanted elements can be uncomfortable at best, and can cause disease and illness at worst. Most of these challenges can be simply stopped or prevented. Protecting people in the inside of a building is best done by first protecting the outside of the building. That’s accomplished by sealing the exterior surface, thus making it water tight and resistant to bad weather and ultraviolet rays, creating a better environment inside the building.