Pro Listing

Keldan Limited

Window Installers in Newmarket, Ontario
Ranked #9 in Newmarket | Grade B-
4.90 (52 reviews)

Keldan Limited

Window and door supplier-installer located at 17915 Leslie St #8, Newmarket, Ontario. Weekday showroom and office hours, with projects scheduled throughout the week.

Keldan Limited business photo 1 - Windows in Newmarket
Keldan Limited business photo 2 - Windows in Newmarket
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Why Homeowners Choose This Business

Local Newmarket, Ontario provider with a track record of tidy installations and helpful coordination during remodels. Reviewers frequently mention clear explanations, schedules kept, and careful cleanup after work is complete.

Service Area

Newmarket, Ontario and surrounding York Region neighbourhoods within convenient driving distance of Leslie Street.

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Listing details

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How This Business Compares

A quick local comparison based on review strength, business detail, and local service fit.
  • Shows strong customer satisfaction signals based on review quality and volume.

Services Covered

  Installations
  Window Replacement
  Door replacement
  Sliding Patio Doors
  Front Entry Doors
  Garden Doors
  Full-Home Window Upgrades
  Window Installation
  Door installation
  Energy Efficient Windows
  Vinyl Windows
  Casement windows
  Double Hung Windows

Window replacement, door replacement, patio/sliding door replacement, full-home window and door remodels, product selection and ordering, site measurement, installation and finishing, post-install walkthrough and care guidance.

Reviews

Customer Reviews

Danielle Johnson
The Keldan Team was amazing and so accommodating! We had our windows and doors replaced and they look absolutely stunning, the installation team was officiant and very tidy. Me and my husband will 100% be coming back in the summer to get ou…
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The Keldan Team was amazing and so accommodating! We had our windows and doors replaced and they look absolutely stunning, the installation team was officiant and very tidy. Me and my husband will 100% be coming back in the summer to get our cottage windows replaced. Would 100% recommend them.

Danielle and Greg Johnson
Kevin McCreary
We recently worked with Mark from Keldan Windows & Doors for a full remodel where we replaced all our windows and doors, and the experience was fantastic. Mark made the process easy and seamless, coordinating well with our contractor even a…
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We recently worked with Mark from Keldan Windows & Doors for a full remodel where we replaced all our windows and doors, and the experience was fantastic. Mark made the process easy and seamless, coordinating well with our contractor even as we moved and changed the location of many openings. He also helped troubleshoot and adjust for some challenging weather issues during the install. Highly recommend Mark and Keldan for anyone looking for professional, reliable, and flexible window and door installation!
Annette Flanagan
This company is awesome and just great to work with. My best friend and Mother have both have used Keldan and have been extremely happy with their workmanship and how they stand behind their work. Mark did a great job installing my door to…
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This company is awesome and just great to work with. My best friend and Mother have both have used Keldan and have been extremely happy with their workmanship and how they stand behind their work. Mark did a great job installing my door to garage with his son. Threshold still drying in this pic and it looks fabulous. Will be calling them again for a new garden door once my kitchen plans are finalized. Thank you!
David Sirois
We are very happy with our purchase from Keldan Windows & Doors. The quality of craftsmanship from the manufacturer through to the quality of installation by your professionals was outstanding. Your installation crew was very communicative…
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We are very happy with our purchase from Keldan Windows & Doors. The quality of craftsmanship from the manufacturer through to the quality of installation by your professionals was outstanding. Your installation crew was very communicative and performed their tasks in a very professional manner. At the end, everything was explained (functionality and care) and cleaned up. Special thanks to Mark who was our salesman , point of contact and one of our installers. Mark is a true representation of professionalism and represents your business at the highest standard.

I would HIGHLY recommend Keldan Ltd for windows and doors for these needs. Outstanding work!
Mark Nowell
We had Keldan in to quote on a complete replacement of all our windows, sliding door and front door. The salesman was fantastic, answering our questions, walking with us through options and then within a day providing us with a quote. Thei…
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We had Keldan in to quote on a complete replacement of all our windows, sliding door and front door. The salesman was fantastic, answering our questions, walking with us through options and then within a day providing us with a quote. Their price was fare without the high price and offer of a sale. The installation team was just as good, completing the job in 2.5 days. We are very happy we chose Keldan, a local, family owned business, providing Canadian made windows and doors. Would highly recommend.

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Frequently Asked Questions

They focus on residential window and door replacements, from single door updates to full-home remodels. Customers often involve Keldan early to confirm measurements, product choices, and scheduling.

A site visit and measurements are followed by ordering and a scheduled install date. Crews arrive prepared, protect work areas, and provide a walkthrough on operation and care after cleanup.

Reviews indicate they coordinate well with contractors and adapt when openings or layouts change. Sharing plans and timelines upfront helps them align deliveries and installation stages.

Product selection is discussed during consultation based on aesthetics, performance, and budget. Specific brands and options are reviewed in person with samples and specifications.

Lead times depend on product choices and season, while installations can range from a day to several days for full-home work. Timelines are confirmed once measurements and orders are finalized.
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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 (52 reviews) Pro Listing
Address
17915 Leslie St #8, Newmarket, ON L3Y 9A4, Canada, Newmarket, ON L3Y 9A4
Business Type
Window Installation Service
Website
http://www.keldan.ca/
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