Basement ventilation is an area that is frequently overlooked. Excess ambient air causes condensation accumulation, which provides hospitable conditions for mold growth. Often building crawl spaces are ignored because they are unoccupied and not incorporated in a maintenance routine. We are receiving calls every day to mitigate water damage and remediate subsequent mold growth in basements and crawl spaces that allow excessive moisture to penetrate the building. We recommend including basement/crawl spaces of residential and commercial buildings in scheduled maintenance inspections to reduce the negative impact of water damage and mold growth.
The Housing Zone offers an informed perspective on ventilation and building dry basements here.
The Healthy House Institute has an interesting article on repairs to existing basements and crawl spaces here.
Bob Vila published an article on energy efficiency and maintaining building basement/crawl space here.