Turning a Damp Crawl Space into a Drier, Better Protected Space in North Vancouver

Friday, October 30th, 2026 by Maria Arango

Challenge

This crawl space needed a more complete solution for water, moisture, and humidity. Old insulation also had to be removed, and the space needed treatment for mould concerns. With several issues happening at once, the goal was to improve drainage, control moisture, and create a cleaner environment beneath the home.

Solution

We started by removing the old insulation and treating the crawl space with a specialized mould-control treatment. A drainage system was then installed to collect water and direct it toward a new sump pump system.

For added protection, the pumping system includes multiple pumps and battery backup, helping the system continue managing water if the primary pump cannot keep up or during a power outage. The exterior discharge was also equipped with freeze protection to help reduce the risk of water backing up during colder weather.

Next, we installed a drainage layer across the crawl space floor to help manage ground seepage, followed by a durable crawl space encapsulation barrier. The barrier was carefully sealed around the foundation walls, footings, and support areas to help separate the crawl space from ground moisture.

A dehumidifier was added to help control excess humidity, while new insulation was installed along the foundation walls and rim joists to help reduce drafts and improve energy efficiency.

With drainage, sump pump protection, crawl space encapsulation, humidity control, and new insulation working together, the space now has a much more complete approach to managing water and moisture beneath the home.