Why do Delaware homeowners like you spend millions of dollars every year to encapsulate their crawl space? Indoor air quality. That's right, indoor air quality is the #1 reason people invest in crawl space encapsulation. Crawl space encapsulation by Crawl Space Ninja is the best way to ensure your home is dry, clean, and efficient. Our optional lifetime warranties and fantastic customer service are second to none. Don't trust the indoor air quality of your home to cheap, fly-by-night companies that claim to be crawl space encapsulation professionals.