"The useful life of an exterior wall depends on the type of wall and the quality of construction. In general, any exterior wall, properly maintained, should survive over 100 years. Without good maintenance, a wall's useful life may be reduced dramatically."-David Stipnauck – Hotel Facilities Management and Design
Property owners and managers frequently overlook the importance of preventive maintenance of their building exterior façades. Their ability to maintain that pleasing curb appeal it once had, as a new structure, falls by the wayside especially as the building ages. Property budgets prioritize tenant or guest impact areas while building needs are left for last or put off until absolutely necessary.
All building materials break down over time no matter how durable. Even durable materials like stone or steel, require proper maintenance to preserve its useful life. A wall's material, method of construction and assembly will determine the preventive maintenance program required. Walls may be integral units or constructed in pre-assembly units. Some wall units like EIFS (exterior insulation finish systems) integrate the building insulation with a waterproof exterior surface. EIFS systems can have a varying number of exterior surfaces that make them look like stone surfaces.
All building exterior preventive maintenance programs should have the following elements:
Source: Hospitality Facilities Management and Design