HPC of South Bend and St. Joseph County - Standards Update Draft

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City of South Bend and St. Joseph County Historic Preservation Guidelines 101 For More Information: Facades and Storefronts WallsWalls on historic buildings are made of a variety of materials . These materials provide a weather tight exterior covering and protect its structural system . Wall covering (or cladding) is one of the top things that give a building its historic look . Care must be taken when considering a repair or replacement . There is a great amount of information on best practices for the repair and preservation of historic walls . The most common things that owners should be aware of: • “Wood grain” artificial siding does not replicate real wood siding . • Mortar needs to be softer than the surrounding masonry . • Re-point with same color, texture, and joint size and profile. • Do not use high pressure power washing or muriatic acid for cleaning brick . • Do not paint surfaces that were not originally painted . • Rolled asphalt roofing should not be used as siding. • Do not use T1-11 type sheet siding for a finish exterior wall. Here are some on-line resources for walls on historic buildings: The National Park Service has several briefs on masonry walls and their cladding . • Repointing Mortar Joints—here . • Substitute Materials: Replacing Deteriorated Serpentine Stone with Pre-Cast Concrete—here . • Stabilization and Repair of a Historic Terra Cotta Cornice—here . • Water Soak Cleaning of Limestone—here . • Non-destructive Evaluation Techniques for Masonry Construction—here . • Treatment Guidelines—an extensive list of topics—here . The Craftsman Blog—brick spalling, wood siding, mortar, asbestos siding, trim, Hardie plank—here . The Old House Journal online: • Repairing lap and other wood siding—here . • Repairing brick and mortar—here . • Lap siding guide—here . • A guide to exterior building materials—here . Return to the Table of ContentsDRAFT