Weather Insulating/Sealing 4
Weather Insulating/Sealing 4 :
Cellulose: Cellulose is the oldest known building insulating material. Dry cellulose can be used in retrofitting old buildings by blowing the cellulose into the wall cavity using boar holes drilled at the top of the walls. Either dry cellulose or wet cellulose applications can be used in new building construction. Cellulose is a respiratory irritant (NTP, 2006). Employers should provide workers with the appropriate dust respirators when using this type of insulation material (NTP, 2006; 29 CFR 1910.1000 Subpart Z; 29 CFR 1926.55 Appendix A). Unless treated with fire-retardants cellulose can be flammable, and should not be used around open flames (Philpot, 1970).
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