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

Services Offered

Thermal Specialties and Installation Co. - Office StaffDo you need replacement windows or door installation at your home in Gaithersburg? Look no further than the pros at Thermal Specialties and Installation Co. We’ve been a trusted door and windows installer in the local region since 1984. We’re known among area homeowners for our exceptional customer service, our superior workmanship, and our reasonable rates. Whether you’re interested in replacing your patio sliding doors with French patio doors or you want to upgrade to energy-efficient windows to lower your heating and cooling bills, we’ve got you covered. We have so many styles and models available, and we’ll get the job done promptly and accurately for lasting results. Get a free cost estimate for our services by calling or e-mailing us today!

Our replacement services include installing the following types of new windows and doors:

  • Double-hung, bay, bow, and casement windows
  • Thermal Specialties and Installation Co. - Heading Out for a JobThermal windows
  • Entry doors
  • Patio doors
  • And much more!

We offer a wide array of exterior windows and doors, and we’ll be able to recommend the best products for your needs and your budget. We can replace anywhere from one to a hundred windows, frame and all. Likewise, we can replace a single broken door or change out all the exterior doors in your home. Whatever the scope of the job, you can trust us for window or door installation that’s efficient and effective.

Licensed & Insured Windows Installer

Thermal Specialties and Installation Co. - Office Staff 2When it comes to installing new windows and doors, it’s vital to choose a company that’s qualified to meet your needs. In and around Gaithersburg, Thermal Specialties and Installation Co. is that company. We’re proud to be fully licensed and insured, holding Maryland license #20351 and Virginia license #2705-046526. We’re also proud to have earned an A+ rating from the Better Business Bureau and two Angie’s List Super Service Awards, in 2014 and 2015. We’re your most reliable choice for window and door replacement in the region.

30 Years in Window & Door Replacement

On top of our training and qualifications, we have three decades of experience as a window and door company. Whether you want a new look as part of a renovation or you’re interested in learning about the benefits of energy-efficient windows, we’ll put our experience to the task of solving all of your problems. We care about giving our customers exceptional entry doors, French patio doors, thermal windows, and so much more.

Warranties for Door & Windows Replacement

We stand behind our work with one of the best warranties in the Gaithersburg area, backing up our workmanship with a 10-year warranty while Thermal Specialties and Installation Co. - Company Truckalso offering a lifetime guarantee for the replacement windows we’ve installed. If you experience any issues with our work after we’ve left your property, don’t hesitate to give us a call. We’ll get a door or window installer back out to your home to make things right.

Thermal Specialties and Installation Co. wants to be your one-stop shop for everything from Energy Star windows to patio sliding doors. We’re available for emergency services as well as for regularly scheduled appointments, and we’ll work hard for you regardless of the turnaround time. Contact us today to discuss your needs!

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