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Beauty and Durability

Therma-Tru Exterior Doors

Exterior of a home with a Therma-Tru door

Therma-Tru’s "legacy of innovation" was founded when they introduced the first fiberglass door on the market in 1982.

With the steady addition of new exterior doors and patio doors designed to meet today's building trends, Therma-Tru continues to hold beauty and durability at the core of their innovation.

Northville Lumber carries the full line of Therma-Tru Doors, from fiberglass and steel entry door systems to sliding and hinged patio doors.

Therma-Tru's superior engineering results in high quality products with enduring beauty, offering decorative glass and hardware options.


Therma-Tru Doors logo
  • Fiberglass and steel construction options
  • PrismaGuard Premium Finish offers a palette of inspirational finishes
  • Decorative glass plus built-in screens and blinds available
  • Energy-efficient and impact-rated glass options

Turn your front door into a welcoming entrance.

Exterior of a home with a Therma-Tru door
Exterior of a home with Therma-Tru French doors

Learn more about Jeld-Wen Exterior and Interior Doors

Learn more about Simpson Exterior and Interior Doors

Learn more about Andersen Exterior Doors

Learn more about Marvin Exterior Doors


We Install!
Door & Window Installation Services

Let the Novi Home Design Center install your windows and doors. Our team of dedicated employees are factory trained and everything they install is done correctly the first time. We have replaced doors and windows for customers in Novi, Northville, Plymouth, Livonia, Farmington and the surrounding communities for more than 20 years and have thousands of satisfied customers. We've got stacks of Thank You and referral letters to back up our claim – ask to read a few examples.

Learn more about Window & Door Installation Services

Visit our showroom or call us to learn more about Therma‑Tru doors.

Copyright © 2016 Northville Lumber Co. • Serving Wayne and Oakland Counties Since 1827