It’s very difficult to identify the type of mold, but some of the most common ones are; • Aspergillus – Found almost everywhere. • Penicillium – Found in vinyl, paneling, wood, painted masonry, and poured concrete foundations. • Cladosporium – Found on external surfaces like vinyl siding, glass surfaces, windows, many types of wood, and paneling. • Trichoderma – Found in untreated lumber, pinewood and boards, decaying wood, and textiles.