Why and how we install VOC/Gas Barriers:
Installing gas barriers under and around foundations is a crucial step in mitigating the risk of hazardous gases, such as radon, methane, and volatile organic compounds (VOCs), from entering buildings and posing health hazards to occupants. Here’s how the installation process typically works:
Site Assessment: Before installing gas barriers, conduct a thorough site assessment to identify potential sources of gas contamination, such as underground storage tanks, landfills, or naturally occurring radon. Determine the extent of the gas problem and the appropriate measures needed to mitigate it.
Selection of Gas Barrier Material: Choose a suitable gas barrier material based on factors such as the type of gas present, soil conditions, building design, and local building codes. Common gas barrier materials include high-density polyethylene (HDPE) membranes, bituminous coatings, and geo-synthetic clay liners (GCLs).
Excavation and Preparation: Excavate the area around the foundation to create a trench where the gas barrier will be installed. Ensure that the trench is deep enough to accommodate the barrier material and extends beyond the perimeter of the foundation to provide adequate coverage.
Installation of Gas Barrier: Place the gas barrier material in the trench, making sure it is continuous and overlaps at seams and joints to create a watertight seal. Secure the barrier in place using appropriate fasteners or adhesives. For under-slab applications, the barrier is typically installed directly on top of the compacted subgrade or gravel layer before pouring the concrete slab.
Sealing and Termination: Seal all penetrations through the gas barrier, such as utility conduits, pipes, and foundation walls, using compatible sealants or tapes. Ensure that the barrier is properly terminated and sealed around the perimeter of the foundation to prevent gas migration.
Testing and Quality Assurance: Conduct gas permeability testing to verify the effectiveness of the gas barrier system in preventing gas infiltration. This may involve installing monitoring wells or vapor sampling points to collect gas samples for analysis. Ensure that the installation meets all relevant building codes and standards.
Monitoring and Maintenance: Implement a monitoring and maintenance program to regularly inspect the gas barrier system for signs of damage, degradation, or failure. Address any issues promptly to maintain the integrity of the barrier and ensure continued protection against gas intrusion.
By following these steps and using appropriate gas barrier materials and installation techniques, you can effectively mitigate the risk of hazardous gas exposure and create a safe and healthy indoor environment for building occupants.
Learn More
Selecting the right waterproofing contractors in Southern Ontario is crucial for the longevity and safety of your project/property. Nusite Contractors Stands out by specializing in all types of foundation waterproofing applications from all the major manufacturers. Understanding the intricacies of basic to the most complex projects we are committed to delivering services that often exceed the manufacturer standards for installation.
Our teams are dedicated to assist in the design process assisting in material selections based on weather, budget and timing constraints. We also offer services assisting in project budgeting for new developments or restoration projects.
We recognize that completing projects within time and budget constraints ensuring minimal disruption to your operations. With Nusite Contractors Ltd. you’re partnering with a team that prioritizes excellence in every waterproofing endeavour.
Our Clients Are
Construction Managers
Project Managers
Property Managers
Asset Owners
Cooperatives
Government and ICI
Architects
Consulting Engineers
Manufacturers
FAQ
What kind of Licensing and Insurance do you carry?
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Do you have references and can I see some of your past projects?
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What kind of Techniques and Materials do you use?
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Do you offer Warranty and Guarantees for your work?
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Do you provide Maintenance and Aftercare services?
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What kind of Certifications and Experience do you have with commercial waterproofing?
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