Window Installation in the Durham Region

Contact the Durham region’s Preferred contracting team at
Carl: 416-389-5388 / Dean: 416-731-5393

Open up your property with stunning windows and doors from Preferred Contracting Bros. We operate throughout Durham and the GTA East region.


Preferred Contracting Bros is proud of our experienced door and window installation team. With over three decades of proven expertise in the field, we have a definite edge over our competitors, both in terms of our exceptional service and superior materials and products.

With our client-centred approach and eye for detail, we live up to our name as Durham’s preferred exterior renovation contractors. So, if you want to improve the curb appeal and value of your property, give us a call today!

It’s all in the name


Windows Installation Whitby
Our Services
  • Window Installation
  • Soffit Installation
  • Siding Repair
  • Eavestrough Installation
  • Fence Installation
  • Roofing Installation
Our Guarantees
  • Free Quotes
  • Licensed and Certified
  • Amazing Workmanship
  • Expert Team
We Serve
  • Whitby
  • The Durham Region
  • Scarborough
  • Pickering
  • Markham
  • GTA East


At Preferred Contracting Bros, we bring you our friendly, reliable and rapid touch to all we do. Complete with our expertise, high-quality products, and personalized service, we offer hassle-free window and door installations to residential and commercial clients throughout the Durham region.

Come and go in style with our beautiful, long-lasting doors. And with our customized windows, you can make the most of your property’s view. We can also handle all types of upgrades and repairs. Need a team to sort out a leaky roof? Or how about a thorough gutter cleaning? No matter what type of exterior renovation you need, our team can get the job done. Call now for a free quote!

Come and go in style


Windows Installation Durham

Quality Service at its Finest

If you’re looking for expert renovation work in the Durham Region, look no further than Preferred Contracting Bros.

Our team is knowledgeable, talented, and trained for excellence. Call today!

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Preferred Contracting Bros

135 Thickson Road

Whitby L1N2C8, ON


Carl: 416-389-5388
Dean: 416-731-5393