CETCO gas vapor barrier chosen by risk assessors for mixed-use redevelopment case study

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Courtesy of CETCO

Project: Pan Am Games Athletes Village
Location: Toronto, ON. Canada
Products: Liquid Boot® 500 Gas Vapor Mitigation System

Background: The site for the Pan Am Athletes Village. a mixed-use redevelopment, is situated on an abandoned piece of property known as West Don Lands. Most of the land was industrial or owned by the railways, and it became the site of an array of factories and warehouses, including one of the largest pork processing facilities in the world.

Challenge: To install a seamless and gas-tight vapor barrier system for a project with a tight construction time line. Scheduling and coordination of material and labor to the jobsite was critical to the success of the project and a system that could be installed rapidly was critical for meeting the strict time constraints of the project.

Solution: Risk assessors for the project initially decided on a 15-mil polyethylene vapor barrier to protect the structures from residual methane and other various chemical contaminants found in the soil. It was later decided that 15-mil HDPE was not sufficient and that a more robust system was needed.

Liquid Boot® 500 Gas Vapor Mitigation System was chosen due to it's long history of successful installations and it's ability to provide a seamless, impermeable membrane that would effectively seal critical vapor intrusion pathways and protect overall indoor air quality within the structures.

Result: Liquid Boot was applied by approved installer. Aquanorth, in 6.000 square foot sections concurrently on multiple buildings to maintain the project schedule. Installation of the Liquid Boot® 500 Gas Vapor Mitigation System was extremely successful and was able to detail the numerous penetrations and footings much faster than HDPE due to it's spray-application and rapid curing time.

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