A complete encapsulation system often requires active environmental control.

If standing water is a concern, a sump pump and internal French drain system should be installed before laying the vapor barrier. Estimated Material Costs

Properly sealing every seam and penetration is essential to maintain the integrity of the barrier.

Prioritize virgin polyethylene over recycled materials for superior strength and longevity.

Prices vary by material quality and the size of the crawl space. Below are typical estimates:

The bare minimum for building code, but prone to tearing and often inadequate for long-term use.

The professional choice for maximum puncture resistance, especially if the space is used for storage or has rocky soil.

A heavy-duty, double-sided tape used to adhere the top of the vapor barrier to the foundation walls.