Who Are We?

Barrier Sciences Group (BSG) is a building envelope consulting firm that offers a unique, incremental approach to deep energy retrofits for residential, industrial, commercial and institutional buildings. With over 37 years of experience, BSG offers a complete list of energy management services, including certified energy audits, home inspections, project management, pre-drywall blower door tests and more. Building managers, contractors and homeowners across all of Ontario trust BSG to increase the energy efficiency and structural integrity of their homes or buildings.

As a member of the Mill Street and Co. group of companies, it is our vision to be the number one Construction and Building Services Provider in Canada. Here are our related companies intent on achieving that vision:

TUQUE
Impact Tools
Sauve's Lumber
Nottawasaga Mechanical
all source security container mfg
AGC

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The Province’s HRRP Now Offers New Eligibility, New Territories, & New Incentives.

There’s great news for homeowners who are planning to do residential renovations or upgrades! The Ontario Government has significantly enhanced the province’s Home Reno Rebate Program. And the bottom line for homeowners - higher rebates! By doing renovations or upgrades that will improve a home’s energy efficiency, homeowners may be eligible for substantial rebates of up to $5,000 from Union Gas. Simply put, there are long-term payoffs with an energy efficient home.

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