Crawl Space Encapsulation With Vapor Barrier and Dehumidifier Install

Most homeowners never think about what's happening under their house. But the crawl space is one of the biggest sources of moisture problems, wood rot, and poor air quality in a home. Left unaddressed, that stuff works its way up - into your floors, your walls, and the air your family breathes every day.

On this job, we went in with a full system approach. We started with an insul-barrier foundation blanket along the walls, then laid down a heavy-duty 20 mil woven vapor barrier across the entire floor. The vapor barrier wraps up and over the foundation walls, creating a sealed barrier between the ground and the living space above. No gaps, no shortcuts.

The 20 mil thickness matters. Thinner poly sheeting tears, punctures, and degrades fast in a crawl space environment. A woven 20 mil barrier holds up to foot traffic, resists punctures, and actually lasts. It's one of those upgrades that makes a real difference over the long haul.

To finish the system off, we installed an Aprilaire E70 dehumidifier. Even with a solid vapor barrier in place, crawl spaces can still pull in humid air through vents and small gaps. The Aprilaire E70 handles that continuously, keeping moisture levels in check year-round without you having to think about it. It's a trusted unit built specifically for crawl space use.

When you combine crawl space encapsulation with a quality dehumidifier, you're not just solving a moisture problem - you're protecting the structural integrity of the home and improving the air quality inside it. That's the goal every time we do one of these jobs.