The air tight character of an Extreme Structural Insulated Panels, SIPs, building envelope prevents the flow of air into the interior (except in a controlled manner), reducing the infiltration of dust, pollens and other airborne particles. Mechanical ventilation systems allow you to filter all incoming air for dust and allergens, and your air conditioning system can dehumidify the conditioned spaces better, making it nearly impossible for mold and dust mites to survive. The result is an exceptional indoor environment.