We often renovate buildings to meet our clients needs and this usually requires demo of the existing structure. During this process the environment can get contaminated with gypsum dust, concrete dust, insulation fibers, and anything else that gets disturbed. We take many precautions to ventilate and clean the air of these particles. One of which is using air scrubbers with HEPA filters that are certified at an efficiency rate of 99.99% at 0.3 microns.