Matthews Millwork
Home of PermaBuilt
©, ThermalBuilt R-5©, and
ThermalBuilt R-10© Products
Proudly Made in America

office (704) 821-4499
toll-free (888) 831-2166
fax (704) 821-4024


Matthews Millwork is home to the ThermalBuilt R-5®, PermaBuilt®, and ThermalBuilt R-10® lines of door products. In business since 1993, Matthews Millwork developed the ThermalBuilt® door product line that, unlike other access and specialty doors, meets the thermal values set forth in the 2012 International Energy Code.  We continue to develop and expand our product lines - our goal is to be the one-stop-shop for custom doors.

We are a just-in-time automated manufacturing facility employing the latest Six Sigma techniques to reduce and control error rates. We own and operate our trucking fleet enabling us to maintain our high quality products and provide one of the quickest order-to-delivery times in the industry. 

Our Mission

To be the leading manufacturer of energy efficient access and specialty doors for the construction industry. We will build the best product, meet our customers expectations all for the best possible price. Our customers are our partners.

  • Faster:  We will deliver a custom door to your builder's specifications in one week or less!!
  • Better:  ThermalBuilt doors pass inspection by providing more than double the thermal value of a  1 3/8" particle-core door. Our doors comply with the 2012 International Energy Code specifications and are backed by a 100% satisfaction guarantee.
  • Lower Cost:  We are constantly improving our processes to improve our efficiency. We search for better components at lower costs. prices. You will find that we not only build a better door.... we do so at a lower price than our competition.

Matthews Millwork is committed to providing unequaled products and services to our customers. All of our products are backed by a five (5) year warranty.


Our core business values drive us to constantly improve our products to deliver the best engineering possible for the lowest cost. This results in an ever changing product line. If you don't see what you need then ask - we will try to accommodate

We are very dedicated to our customers. Our service quality is second to none. We live by our reputation.