Advanced Moisture, Air Quality & Soil Gas Control System
Crawlspace encapsulation is a comprehensive environmental control solution designed to transform a damp, exposed crawlspace into a sealed, stable, and protected area beneath the home. By isolating the crawlspace from ground moisture, soil gases, and unconditioned air, encapsulation protects the structure while directly improving the air quality throughout the entire living space.
Why the Crawlspace Matters More Than Most Realize
Homes naturally operate under what’s known as the stack effect, air is drawn into the structure at lower levels and moves upward, exiting through the upper portions of the home.
This means the crawlspace is not isolated.
It is a primary contributor to the air that circulates throughout the home.
When a crawlspace is exposed, it can continuously introduce:
- Moisture and humidity from the ground
- Mold spores generated on damp organic materials (wood framing, dust, insulation)
- Musty odours and airborne contaminants
- Soil gases, including radon, that migrate upward from the ground
Without proper control, these elements are pulled into the home and distributed through natural air movement.
What Crawlspace Encapsulation Does
Encapsulation creates a sealed barrier between the home and the earth below it, addressing both moisture intrusion and air movement at the source.
Key Benefits
Moisture Elimination & Mold Control
By blocking ground vapour and stabilizing humidity, encapsulation removes the conditions that allow mold to form on organic materials such as wood framing and subflooring.
Soil Gas & Radon Mitigation Support
Encapsulation helps limit the entry of soil gases, including radon, by sealing the ground surface and reducing uncontrolled airflow pathways into the home.
Whole Home Air Quality Improvement
Because air is naturally drawn upward from lower levels, sealing the crawlspace reduces the spread of contaminants, odours, and airborne particles into the living space.
Structural Preservation
Excess moisture leads to wood rot, deterioration, and weakening of structural components. Encapsulation helps maintain dry, stable conditions that protect the integrity of the building.
Energy Efficiency & Comfort
A sealed crawlspace reduces uncontrolled air leakage and helps maintain more consistent temperatures, improving overall energy performance.
Our Encapsulation System
Our approach is built for long-term performance, not temporary surface-level fixes.
1. Crawlspace Preparation
Removal of debris and preparation of all accessible surfaces to ensure proper system installation.
2. Condition & Moisture Assessment
Evaluation of humidity levels, ventilation, and contributing moisture sources.
3. Reinforced Vapour Barrier Installation
Installation of a high-durability vapour barrier across the entire crawlspace floor, extended up foundation walls and sealed at all transitions.
4. Sealing of Penetrations & Air Pathways
All seams, edges, and penetrations are sealed to limit air movement and prevent moisture and soil gas intrusion.
5. Environmental Control (As Required)
Integration of dehumidification or additional airflow control systems where necessary to maintain optimal long-term conditions.
Designed for Coastal Conditions
In climates like British Columbia, where ground moisture and humidity levels remain consistently elevated, encapsulation provides a reliable, long-term solution for controlling conditions beneath the home.
When Encapsulation Is Recommended
- Persistent dampness or high humidity
- Musty odours inside the home
- Visible mould or previous remediation
- Cold floors or inconsistent indoor temperatures
- Concerns about radon or soil gas infiltration
Professional Crawlspace Assessment
Every crawlspace behaves differently. We provide site specific evaluations to determine the most effective encapsulation system for long-term performance, structural protection, and indoor air quality improvement.
Long-Term Protection & Cost Prevention
Crawlspace encapsulation is not only a moisture control solution, but also a long-term investment in the protection of the home. Ongoing exposure to moisture can lead to progressive deterioration of wood framing, corrosion of metal components, and increased risk of structural repairs over time. By creating a sealed and controlled environment, encapsulation helps prevent these issues before they develop into costly problems. It also reduces the likelihood of recurring mold remediation, making it a more permanent and reliable solution compared to temporary treatments.
If active mold growth is present, professional remediation is required prior to encapsulation to ensure long-term effectiveness. We provide complete mold remediation services as part of a properly sequenced crawlspace solution.
We provide crawlspace encapsulation services in Vancouver, Burnaby, North Vancouver, West Vancouver, Coquitlam, Port Coquitlam, Port Moody, Maple Ridge, Pitt Meadows, Abbotsford, Aldergrove, Surrey and Delta.