THRESHOLD 
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    • Partners
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THRESHOLD 
CONSULTANT
  • Home
  • Partners
    • Modern West
    • Brazos
    • Kelly Ranch Design Center
    • Renaissance Bronze
  • About
  • Services
  • Testimonials
  • Payment Portal

Meet the Threshold team

Leslie Gilbreath - Founder and CEO

Lead Consultant + Sales + Architectural Rep


Leslie Gilbreath is a trusted expert in fenestration, specializing in windows and doors for luxury homes. A key resource in the Building Industry and Architectural Community, she consults on projects from design to completion, ensuring efficiency and budget alignment through strong negotiation and leadership.


Since 2007, Leslie has cultivated a deep, holistic understanding of the industry and business development through a variety of roles. Her passion for her work has fueled her growth as a strong, strategic leader, ultimately leading her to establish Threshold Consultant in 2024. Today, her expertise is highly sought after by architectural firms, builders, and homeowners across the DFW market and beyond. Leslie attributes her lasting success and trusted relationships to a foundation of hard work, clear communication, and unwavering integrity.

Leslie is a Texas native and an alum of the University of North Texas. She is a longtime resident of Aledo with her husband and four children. On the weekends, you will find her at baseball and football stadiums cheering for her favorite Bearcats and attending Christ Chapel - West Campus. 

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Mack Gilbreath - President and CTO

As the President and Chief Technology Officer of Threshold Consultant, I lead our innovative team in delivering top-tier window and door consulting services. With a focus on cutting-edge technology and sustainable solutions, I oversee all aspects of our operations, from strategic planning to technology execution.

My role involves:

Driving Innovation: Spearheading the development and implementation of advanced technologies to enhance our consulting services.
Strategic Leadership: Guiding our company’s vision and strategy to ensure we remain at the forefront of the industry.

I am passionate about leveraging technology to create efficient, sustainable, and aesthetically pleasing window and door solutions.

Our Mission
Empowering clients to make strategic decisions, enhance negotiations, and execute window and door projects with precision

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