Insights

Expanding Market Presence Great Lakes Systems recently merged with Weather Shield Roofing Systems, strengthening its market position in the West Michigan region and expanding its service offerings in roofing maintenance and reroofing solutions, which presents upselling opportunities for ongoing service contracts and maintenance agreements.

Specialized Expertise The company is an approved applicator for leading roofing product brands such as Carlisle SynTec, Firestone, Duro-Last, and Johns Manville, indicating its access to high-quality materials and a specialization that can appeal to clients seeking durable, proven roofing solutions.

Focused Industry Segment Operating primarily in commercial, industrial, and institutional sectors with extensive experience in large-scale projects exceeding one million square feet, Great Lakes Systems is well-positioned to target large building owners and general contractors with complex roofing needs.

Technological Capabilities Utilizing advanced web and security technologies such as HTTP/3 and Cloudflare Bot Management, the company demonstrates a commitment to digital innovation and cybersecurity, which can be leveraged for targeted digital marketing campaigns and online lead generation.

Growth Potential With revenues estimated between 10 and 25 million dollars, and a focused regional presence, there is significant opportunity to expand into new markets or increase share within existing sectors by emphasizing their proven project track record and strategic partnerships.

Great Lakes Systems Inc Tech Stack

Great Lakes Systems Inc uses 8 technology products and services including Open Graph, RequireJS, Handlebars, and more. Explore Great Lakes Systems Inc's tech stack below.

  • Open Graph
    Content Management System
  • RequireJS
    Javascript Frameworks
  • Handlebars
    Javascript Frameworks
  • Cloudflare Bot Management
    Security
  • HSTS
    Security
  • HTTP/3
    Web & Portal Technology
  • Google Plus
    Widgets
  • Twitter
    Widgets

Great Lakes Systems Inc's Email Address Formats

Great Lakes Systems Inc uses at least 1 format(s):
Great Lakes Systems Inc Email FormatsExamplePercentage
First-Last@glsroof.comJohn-Doe@glsroof.com
44%
First@glsroof.comJohn@glsroof.com
37%
FLast@glsroof.comJDoe@glsroof.com
19%

Frequently Asked Questions

Where is Great Lakes Systems Inc's headquarters located?

Minus sign iconPlus sign icon
Great Lakes Systems Inc's main headquarters is located at 2286 Port Sheldon Court Jenison, Michigan 49428 United States. The company has employees across 1 continents, including North America.

What is Great Lakes Systems Inc's phone number?

Minus sign iconPlus sign icon
You can contact Great Lakes Systems Inc's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Great Lakes Systems Inc's official website and social media links?

Minus sign iconPlus sign icon
Great Lakes Systems Inc's official website is glsroof.com and has social profiles on LinkedIn.

What is Great Lakes Systems Inc's SIC code NAICS code?

Minus sign iconPlus sign icon
Great Lakes Systems Inc's SIC code is 1761 - Roofing, Siding, and Sheet Metal Work NAICS code is 23 - Construction.

How many employees does Great Lakes Systems Inc have currently?

Minus sign iconPlus sign icon
As of April 2026, Great Lakes Systems Inc has approximately 26 employees across 1 continents, including North America. Key team members include President: J. M.Preventive Maintenance Director: B. H.Director Of Computer Technology: D. E.. Explore Great Lakes Systems Inc's employee directory with LeadIQ.

What industry does Great Lakes Systems Inc belong to?

Minus sign iconPlus sign icon
Great Lakes Systems Inc operates in the Construction industry.

What technology does Great Lakes Systems Inc use?

Minus sign iconPlus sign icon
Great Lakes Systems Inc's tech stack includes Open GraphRequireJSHandlebarsCloudflare Bot ManagementHSTSHTTP/3Google PlusTwitter.

What is Great Lakes Systems Inc's email format?

Minus sign iconPlus sign icon
Great Lakes Systems Inc's email format typically follows the pattern of First-Last@glsroof.com. Find more Great Lakes Systems Inc email formats with LeadIQ.

When was Great Lakes Systems Inc founded?

Minus sign iconPlus sign icon
Great Lakes Systems Inc was founded in 1969.

Great Lakes Systems Inc

ConstructionMichigan, United States11-50 Employees

We exist to keep our customers dry. If you need a new single-ply commercial, industrial or institutional roof—whether you’re a building owner, architect, general contractor or facilities manager—you’re in search of a roofing contractor you can trust. You’ve come to the right place.

To date, we’ve applied over sixty-million square-feet of single-ply roofing including projects ranging from just a few squares to major industrial plants of nearly one-million square-feet.

Great Lakes Systems is an approved applicator for Carlisle SynTec, Firestone Building Products, Duro-Last Roofing and Johns Manville.

Section iconCompany Overview

Headquarters
2286 Port Sheldon Court Jenison, Michigan 49428 United States
Phone number
SIC Code
1761 - Roofing, Siding, and Sheet Metal Work
NAICS Code
23 - Construction
Founded
1969
Employees
11-50

Section iconFunding & Financials

  • $10M$25M

    Great Lakes Systems Inc's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $10M$25M

    Great Lakes Systems Inc's revenue is estimated to be in the range of $10M$25M

Ready to create more pipeline?

Get a demo and discover why thousands of SDR and Sales teams trust
LeadIQ to help them build pipeline confidently.

© LeadIQ, Inc. All rights reserved.