Knapp Masonry LLC
Contractor Background & Craft Discipline
Knapp Masonry LLC specializes in historic preservation and traditional masonry restoration across Greater Philadelphia and southern New Jersey. Mentored by regional preservation architects and engineers, the firm works exclusively with breathable, low-strength lime mortars formulated according to ASTM C270 Type O, Type K, and natural hydraulic lime standards to protect soft historic brick and stone from catastrophic spalling.
Documented Preservation Specialties
Documented Project Focus & Regional Experience
Extensive restoration work on landmark civic institutions, historic churches, and 18th- and 19th-century residential facades throughout Philadelphia's Center City, Society Hill, and Fairmount historic districts.
Preservation Standards Advisory
Historic structures require specialized techniques and breathable materials. When undertaking restoration work, ensure contractors follow established National Park Service preservation guidelines (such as Preservation Brief #2 for breathable lime mortar repointing on historic masonry or sash preservation over vinyl replacement).