Building Science

Air and Moisture Barriers Create Healthier Buildings

Eliminate mold and allergens from indoor environments

Air and moisture barriers improve more than just energy-effi­cien­cy. They create a healthier indoor envi­ron­ment. Air leakage can account for between 25 — 40% of the energy used for heating and cooling a building. Air leakage not only decreases energy effi­cien­cy, it can lead to a less healthy building environment. 

Even small improve­ments in air-tightness can lead to sig­nif­i­cant reduction of air infil­tra­tion, min­i­miz­ing the amount of energy consumed in order to maintain the proper indoor climate and decreas­ing the amount of moisture – warm, dense, humid air – that can come into the building. The con­se­quences of air leakage go far beyond the loss of energy effi­cien­cy. Air infil­tra­tion can be harmful to building occupants with molds, allergens and pol­lu­tants pen­e­trat­ing indoor environments.

An airtight building envelope sig­nif­i­cant­ly reduces the amount of work that the HVAC system has to do in order to maintain the desired interior tem­per­a­ture and humidity. Walls built with Bautex Block also provide a firm and stable substrate on which to apply the air and moisture barriers.

As a result, there is no movement, vibration or decay, like that which occurs in light framing systems over time. It’s also much easier to get a good instal­la­tion of the air and moisture barrier on the Bautex Block wall than many other systems.

Bringing together the right design with the right building materials has enabled archi­tects and builders to make great strides in improving the level of air tightness in struc­tures of every size and purpose. Today, it’s possible to construct a new building with levels of air tightness that would have been incon­ceiv­able even a decade ago.

Download Under­stand­ing R‑value, Mass Walls, Con­tin­u­ous Insu­la­tion and Air Tightness for more information.