Did you know that the EPA recommends, "Repair additional moisture problems identified during the assessment (e.g., plumbing leaks, rain leaks including leaks around windows and flashing, and foundation leaks). Retrofit crawlspaces so that they are unvented, sealed, insulated, properly drained and waterproofed, following guidance in section 1.4 of EPA’s Indoor airPLUS Construction Specifications". Page 9, EPA Healthy Indoor Environment Protocols for Home Energy Upgrades—Guidance for achieving safe and healthy indoor environments during home energy retrofits.