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Douglas Window & Door Inc.

London Window Installers
Ranked #4 in London | Grade A-
4.90 (274 reviews)

Douglas Window & Door Inc.

Douglas Window & Door Inc. helps London-area homeowners choose and install windows and doors with careful measurements, organized scheduling, and tidy workmanship noted in many reviews.

Why Homeowners Choose This Business

Local showroom support with clear options and timely scheduling. Consistent feedback about courteous installers, tidy work areas, and helpful sales consultations. Projects coordinated from quote to final walkthrough with attention to fit and finish.

Service Area

Serving London, ON and surrounding Southwestern Ontario communities.


How This Business Compares

A quick local comparison based on ranking, review strength, and market visibility.
  • Maintains a competitive standing in this market.
  • Performs at or above the local average for Google rating.
  • Shows review activity that is competitive for this local market.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Renovation Services
  Service
  Supplier
  Installations
  window replacement
  Door installation
  Entry doors
  Patio doors
  vinyl windows
  Casement windows
  Sliding Doors
  picture windows
  Bay and bow windows
  Window Trim and Capping
  energy efficient windows
  exterior door replacement

Home window replacement, door replacement, patio and garden doors, product sourcing, in-home consultation and measurement, installation and disposal of old units, interior and exterior finishing and trim.


Recent Reviews

4.90

(Based on 274 reviews)

Recent reviews frequently mention personable consultations, clear communication, and tidy, efficient installations. Many customers are repeat clients who appreciated guidance on product choices and scheduling. A small number of reviews report concerns about specific installation issues and follow-up, but most feedback trends positive on workmanship and overall experience.

Google Review
Amber Wilde-DiMarco on Douglas Window & Door Inc.

I couldn't be more pleased with my experiences. The windows were installed sooner than expected, the crew went to great lengths to keep everything clean and as dust free as possible, and the windows are excellent quality. Luc was very informative in the consultation. During the installation, Greg, Sean, and Richard worked quickly and were very pleasant to have in my home. I think there may have been one more person whose name I didn't catch, but huge shout out to the whole team. Robin was also wonderful on the back end keeping us informed of timeline estimates every week. 10/10

Google Review
Emily Herbert on Douglas Window & Door Inc.

This is my second time having a door purchased and installed from Douglas Windows and Doors and I couldn’t be happier! Graham was great to work with again showing me all the options and Greg/Sean and the team of installers were wonderful as well.
I highly recommend this company for all your door and window needs!

Google Review
Christine Corrigan on Douglas Window & Door Inc.

Very professional and courteous people. From my first visit to the office to the final install. I definitely would use Douglas Windows and Doors again

Google Review
Maria Pilavakis on Douglas Window & Door Inc.

From start to finish, my experience with Douglas Window & Door was absolutely exceptional!

I had an outstanding experience working with Luc - he set the tone with his outstanding professionalism and his ability to combine expertise with genuine care. He was knowledgeable, patient, and incredibly attentive, always taking the time to explain details and answer questions thoroughly. His communication was timely and clear, he stayed on top of scheduling and follow-ups to ensure everything was on track and went smoothly. Luc consistently went above and beyond, truly earning my trust and making the entire process stress-free.

The installation crew, Brandon (lead), Dylan, and Robert, were absolutely fantastic! Their communication was excellent, and they arrived on time every day, ready to work. The crew was organized and efficient, with a clear plan for tackling the installation, and they executed it flawlessly. What really stood out was their professionalism and courtesy. They were personable, respectful, and took great care of our home - containing any mess to the work areas and cleaning up thoroughly before leaving each day. Throughout the process, they kept us informed, explaining what they were doing, and walking us through what had been completed and what to expect next. Their knowledge and competence were evident, and the quality of their work exceeded my expectations. I was so impressed and confident with their workmanship that I specifically requested the same team to handle installations for my mom and also my aunt.

They were referred to me by another happy customer and I cannot say enough great things about them to the people I have since recommended them to. Without hesitation, I highly recommend Douglas Window & Door!

Absolutely terrible install. Have to call them this morning for the second drafty window on a newer home they did the install messed it up came back messed it up again. Had some kid of the worker doing the work. Absolutely disgusting. Also have ignored emails about trim work. These guys are a joke. One step away from having another company come and do it right and forward these clowns the bill. What a joke. Brutal customer service typical sales ppl.



Frequently Asked Questions

They install a range of replacement windows along with entry, patio, and garden doors. Options are discussed during consultation so homeowners can compare styles, materials, and glass choices.

Yes, consultations typically include discussing goals, reviewing options, and taking measurements. This helps ensure accurate pricing and a proper fit before scheduling installation.

Timelines vary by product selection and order lead times. Many reviewers note projects were scheduled clearly and installs were completed efficiently once materials arrived.

Yes, standard replacements usually include removal and disposal of old units. The installation crew also aims to keep work areas clean and minimize dust during the process.

Yes, their showroom is located on Hamilton Rd in London. Visiting allows you to view styles and finishes and talk through options before booking a site visit.
 Verified Listing

Opening Hours


  • Monday 9:00 AM – 5:00 PM
  • Tuesday 9:00 AM – 5:00 PM
  • Wednesday 9:00 AM – 5:00 PM
  • Thursday 9:00 AM – 5:00 PM
  • Friday 9:00 AM – 5:00 PM
  • Saturday Closed
  • Sunday Closed

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Business Details


Business Rating
4.90 (274 reviews) FeaturedPro Business
Address
515 Hamilton Rd, London, ON N5Z 1S3, Canada, London, ON N5Z 1S3, CA
Business Type

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