Barrier Sciences Group

What Barrier Sciences Group does

Barrier Sciences Group, operating commercially as Great Northern Insulation (GNI), is a privately held Canadian building insulation contractor founded in 1980 and headquartered in Woodstock, Ontario. The company operates as part of GNI Management Group Inc., which also owns Advanced Insulation, Isolation Majeau et frere (Quebec), and McPherson Products. GNI self-identifies as Canada's largest full-service insulation contractor, with seven regional offices across Southern Ontario (London, St. Catharines, Ottawa, Gravenhurst, Barrie, Etobicoke, Port Perry) and a headcount of 51-100 employees. The company is 100% Canadian owned.

The core offering is building science-based insulation installation across three material technologies: cellulose insulation (CLIMATIZER PLUS, 85%+ locally recycled post-consumer newsprint), Canadian-manufactured hemp insulation, and spray foam insulation including BASF WALLTITE CM01 (HFO-based, lower GWP) and Huntsman HEATLOK SOYA HFO (zero ODP, GWP of 1). Service lines cover residential retrofit, residential new construction, agricultural buildings, commercial retrofit, and commercial new construction under GNI Management Group Inc. Distribution occurs through direct sales with in-home assessments, a toll-free number, and an authorized installer partnership with Lowe's retail locations. Marketing leverages content (blog), Instagram (@gninsulation), HomeStars reviews, email newsletter, and HGTV/DIY Network exposure on Holmes and Holmes and Love It or List It.

The business model is project-based, one-time installation services with quote-based pricing and optional financing as low as $13/month OAC. Customer demand is stimulated through facilitation of government and utility incentive programs, including the Ontario Attic Insulation Rebate (up to $1,250), the Enbridge Home Efficiency Rebate Plus (up to $10,000), the Canada Greener Homes Loan, and the City of Toronto Home Energy Loan Program (HELP). Strategic material supplier relationships include BASF (WALLTITE), Huntsman Building Solutions (HEATLOK), 3M, and Climatizer. Recognition includes HomeStars Best of awards in 2021 and 2022, BBB accreditation, and RenoMark certification. No revenue figures, funding rounds, patents, or management team details are publicly disclosed.

Name

Barrier Sciences Group

Legal name

Great Northern Insulation

Website

https://barriersciences.com

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

51–100 employees

Short description

Barrier Sciences Group, operating as Great Northern Insulation (GNI), is Canada's largest full-service insulation contractor, providing residential, commercial, industrial, agricultural, and new construction insulation installation across Southern Ontario since 1980 using cellulose, hemp, and spray foam materials.

Ownership category

akta.pro rank

Product category

Building Insulation Contracting

NAICS

Drywall and Insulation Contractors (238310)

akta.pro industry

PRIMARYIMAFAMAD

Insulation & Air/Vapor Barrier Systems (Thermal, Acoustic, WRB/AVB)

Industrials, Manufacturing & Construction/Construction & Civil Engineering/Building Envelope & Exterior Works (Roofing, Facades, Glazing)

Keywords

• Building insulation services
• Energy retrofit services
• Spray foam insulation
• Cellulose insulation
• Commercial insulation contractor

Headquarters

HQ city

Woodstock

HQ country

Canada

HQ region

North America

Offices7 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Supply Chain

Revenue model

1. Residential Insulation Services: One-time installation services for homeowners including attic insulation, basement insulation, and air sealing
2. Commercial and Industrial Insulation Services: Services for new construction and retrofit projects in institutional, commercial, and industrial sectors under GNI Management Group Inc.
3. New Construction Services: Insulation services for residential and commercial new construction projects

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Barrier Sciences Group operates as a full-service insulation contractor delivering deep energy retrofit and new-construction insulation services across Southern Ontario. The company installs spray foam, cellulose, and hemp insulation, and performs air sealing for residential, agricultural, commercial, industrial, and institutional buildings under the Great Northern Insulation (GNI) brand and parent entity GNI Management Group Inc.

Product overview

Great Northern Insulation is a full-service insulation contractor offering residential and commercial insulation services across Ontario. The company provides a unified suite of services including residential retrofit, new construction residential, agricultural insulation, commercial retrofit, and new construction commercial services. Their product portfolio includes insulation materials such as cellulose insulation (made from 85%+ recycled paper), hemp insulation (Canadian-made sustainable option), and spray foam insulation products including WALLTITE CM01 and HEATLOK SOYA HFO. The company operates under GNI Management Group Inc. and serves Southern Ontario through multiple locations.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential Retrofit Services

Quantifiable outcome

• Dramatic decrease in heating and air conditioning bills after insulation and air sealing
• +2 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Lowe'scoreChannel Partner/ Reseller/ DistributorGNI is the authorized and trusted insulation and air sealing installer for Lowe's retail locations across Ontario
• BASF (WALLTITE)coreTechnology or IntegrationWALLTITE CM01 spray foam insulation using hydrofluorolefins (HFOs) with lower global warming potential compared to HFCs. GNI is a foam master certified installer
• Huntsman Building Solutions (HEATLOK)coreTechnology or IntegrationHEATLOK SOYA HFO spray foam using Honeywell's Solstice Liquid Blowing Agent technology with zero ODP and GWP of 1
• Climatizer (Cellulose Insulation)coreTechnology or IntegrationCLIMATIZER PLUS cellulose insulation manufactured from minimum 85% locally-sourced post-consumer recycled newsprint with fire, moisture, mould and pest resistance
• EnbridgeminorGTM or Marketing PartnerHome Efficiency Rebate Plus program offers up to $10,000 in home reno rebates through Enbridge; GNI facilitates customer access to these incentives
• Holmes and Holmes (HGTV)minorGTM or Marketing PartnerFeatured on HGTV and DIY Network show; Mike Holmes and MJ convert MJ's bachelor bungalow using newest materials and build techniques
• Habitat for HumanityminorOthersGNI supports Habitat for Humanity through charitable giving and insulation services for affordable housing projects

Scale indicators4 records

Expansion highlights6 records

Broad incumbents

• TruTeam: US-based installer of insulation, gutters, fireplaces, and other building products across hundreds of branches. Closely aligned installer-of-insulation business model and multi-region operating structure, though broader in service mix and entirely US-based.
• TopBuild Corp: US-listed (NYSE: BLD) installation services distributor of insulation and related building products, spun out from Masco in 2015. Directly comparable business model (insulation installation + distribution), with national US scale and a similar mix of residential and commercial demand.
• Installed Building Products: US-listed (NYSE: IBP) national insulation installation contractor with hundreds of branches across the United States. Comparable as a large-scale full-service insulation installer pursuing a rollup strategy in a fragmented market, though operating at much greater scale and geographic scope than GNI.

Others

• Lowe's Companies: North American home improvement retailer; GNI is an authorized and trusted insulation installer for Lowe's Canada locations. Comparable as a channel/ecosystem partner whose home services strategy and store footprint materially shape GNI's demand funnel.
• Knauf Insulation: Global manufacturer of glass mineral wool and other insulation products supplying the North American market. Comparable as a material supplier whose product roadmap influences what GNI can offer; an indirect competitor through distribution arms and a key upstream ecosystem player.
• Huntsman Building Solutions: Manufacturer of spray foam insulation including HEATLOK SOYA HFO (a product GNI installs). An upstream supplier and technology partner; the spray foam manufacturer's certified installer network is the ecosystem in which GNI operates.
• Owens Corning: Global manufacturer of insulation, roofing, and fiberglass composite materials. Comparable because Owens Corning shapes the product supply and innovation pipeline that GNI installs; also a competitor in some retrofit contexts and a partner/supplier in others.
• BASF (Walltite / MasterSeal): Global chemical manufacturer producing WALLTITE CM01 spray foam insulation that GNI installs. Comparable as the upstream material supplier whose certified installer program (in which GNI is a Foam Master certified installer) defines part of GNI's value proposition.

Direct peers

• Peak Insulation & HVAC Services: Ontario-based residential and commercial insulation contractor operating across multiple Ontario regions with spray foam and blown-in services. Direct competitor in the same geography with a comparable product set and customer profile.
• AmeriSpec Insulation Services: Canadian franchise network offering home insulation, air sealing, and energy audits. Comparable service offerings and homeowner target customer, with a different (franchise-driven) operating model but overlapping demand drivers and product mix.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/gninsulation
• Xx.com/barriersciences
• Facebookfacebook.com/barriersciences
• LinkedInlinkedin.com/company/barrier-sciences-group

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Barrier Sciences Group