DeVere Insulation Home Performance is locally owned and operated, serving homes and businesses in the Baltimore, MD area and across the entire state of Maryland. We provide air sealing, attic insulation, crawl space insulation, energy audits, knee wall insulation, energy audits, wall insulation and more. We work with local utilities to help maximize energy improvement rebates and save you money on home energy upgrades. We have the expertise to install insulation in any project.