Thermal Specialties and Installation Co.

(240) 770-1167
Thermal Specialties and Installation Co. - Replacing a Window
Thermal Specialties and Installation Co. - On a Job
Thermal Specialties and Installation Co. - Working on a Window
Thermal Specialties and Installation Co. - Second Floor Window Install

Door Replacement

Thermal Specialties and Installation Co. - On the JobDo you need door replacement at your home in Gaithersburg? You’ve come to the right place. Thermal Specialties and Installation Co. is your licensed and insured source for expert door installation throughout the region, holding Maryland license #20351 and Virginia license #2705-046526. When you make us your door company of choice, you can expect to gain access to superior workmanship, exceptional customer service, and some of the most reasonable rates in town. We care deeply about the work we do. Whether you’re replacing a single broken door or you want to install new doors all the way around your home, we’ve got you covered. Call or e-mail Thermal Specialties and Installation Co. today to learn more about what sets us apart from other local door companies, and to book our services!

We offer exterior door installation for the following types of doors:

When you contact us to discuss door replacement, we’ll be happy to tell you about the styles and materials we have available. Our offerings include fiberglass doors, wood doors, and steel doors with many different design features and finishes. We can even install energy-efficient doors to help your home stay warm in the winter and cool in the summer. Our door installers will be happy to talk you through your options to help you make a decision, throwing in a free cost estimate as needed. Once you’ve chosen the best door for your needs, door installation will be swift and accurate.

30+ Years as a Door Company

Thermal Specialties and Installation Co. was founded in 1984, which means we have more than three decades of experience as door installers. We’ll put everything we’ve learned about our industry in those years on the job to work in your home. Our experience helps us do beautiful and durable work that will stand up to the tests of time and use. Plus, you can breathe easy knowing we stand behind our exterior door installation workmanship with a 10-year warranty.

We’re proud to have an A+ rating from the Better Business Bureau, and to have secured Angie’s List Super Service Awards in 2014 and 2015. We’ve earned a reputation among Gaithersburg-area door companies for truly caring about our customers’ satisfaction. So what are you waiting for? Contact us now to speak with our door installers about your needs!

Thermal Specialties and Installation Co. only offers entire door replacement. We do not replace individual components such as locks or panes of glass. We apologize for any inconvenience. 

  • Patio Door Replacement
  • Exterior Door Replacement
  • Replacement Doors
  • Replacement Patio Doors
Thermal Specialties and Installation Co. is your best choice for new windows and doors in Gaithersburg. We're a licensed and insured door and windows installer with more than three decades on the job. We offer quality workmanship, great customer service, and reasonable rates. Contact us to discuss energy-efficient windows, new entry doors, and much more.


Mon-Fri 8AM-8PM

Accepted Payment

A+ BBB RatingThermal Specialties and Installation Co - Angieslist 2015 Super Service Award  Super Service 2014Licensure Details