Speaking of Green Filter Articles Article Topics Installation Case Studies News Sustainability Wellness Sound Control clear filters clear filters Article Topics Installation Case Studies News Sustainability Wellness Sound Control Explore the latest Greenfiber articles, press releases, news and industry insights. Installation / 04.26.23 Can you blow cellulose insulation over existing fiberglass? Learn how to install cellulose over existing fiberglass insulation. Installation / 02.23.23 Debunking 6 Common Myths About Cellulose Insulation Get the truth on these top misconceptions about cellulose insulation. Installation / 01.09.23 Your guide to installing cellulose insulation for sidewall retrofit applications Sidewall cavities are the second-biggest area of heat escape. Use this step-by-step guide for proper installation of sidewall applications.