Issue link: https://hi.iaq.net/i/248503
www.epa.gov/iaq/moisture Wall Maintenance Issue Figure 4-1 Interior Wall Showing Water Damage and Mold Failure to properly inspect and maintain interior and exterior walls can result in moisture problems going unnoticed or unrepaired. Unnoticed damage to walls can lead to a need to repair multiple building components at high cost and can create health risks associated with mold growth in the interior of walls. Goals Wall Maintenance Goal 1: Create and operate verification and inspection systems to detect potential moisture problems before harm is done. Wall Maintenance Goal 2: Effectively maintain walls to prevent moisture problems, as intended by the design. Guidance Wall Maintenance Goal 1: Create and operate verification and inspection systems to detect potential moisture problems before harm is done. Guidance 1: Conduct inspections, record the results and make necessary repairs. Guidance 1: Develop inspection checklists and record-keeping systems. • Inspect walls periodically and after heavy winds and rains. Conducting inspections during each season is recommended. • Develop a wall assembly manual and logbook. Include the type of wall, contractor information, maintenance procedures, a record of inspections and related items. • Check interior walls and ceilings for signs of water damage or staining (See Figure 4-1). • Develop a wall assembly inspection checklist. Use it as a guide for evaluating masonry units, flashings and counter flashings, caps and drainage assemblies. • Inspect exterior walls and roof overhangs: yy Look for signs of moisture, cracking or movement. yy Look for cracked, loose or spalled units on brick masonry walls. • Develop elevation drawings to map and locate problems found during the inspections. yy Inspect joints for deteriorated mortar. • Develop and keep inspection and repair records for all exterior walls, including before and after pictures to document results of maintenance and repair activities. yy Look for mold or algae growth. yy Be aware that ivy growing on brick walls can penetrate voids in mortar and may lead to moisture penetration. Wall Maintenance Goal 2: Effectively maintain walls to prevent moisture problems, as intended by the design. 93