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.