Replacement Windows, Exterior Doors & Siding Design and Installation

Your Window, Door, Siding and Exterior Renovation Experts in London, St. Thomas and surrounding area

At Lormac, we believe that a person’s home is one of their largest and best investments. Therefore, we offer only the finest products and workmanship to give you years of savings, comfort and satisfaction.

We offer a wide selection of Vinyl Windows, Siding, Entry Doors and Patio Doors. We are proud of our reputation as we are one of the founding members of SAWDAC (Siding and Window Dealers Association of Canada and as well, the first Window Wise™ Certified Dealer in London Ontario serving Southwestern Ontario.

With our “Apples to Apples” Philosophy guarantee and lifetime transferable warranty, our customers have peace of mind for years to come!

Have one of our expert certified Consultants provide a Free, No-Obligation In Home Consultation with you, Lormac listens to your wants and needs. We can help!

Cardinal Soft Coat LoE² and Soft Coat LoE Sun Coated Glass Products.
LoE-179 PDF

WINDOWS THAT CLEAN THEMSELVES - Simply Clean Self Cleaning Glass "Neat"

For more information go to the government of Canada website.

Let our Expert Consultants help you find savings.
Lormac provides a 35% fuel savings guarantee, in writing. Ask your consultant for details.

A Business of Trust
Better Business Bureau Accredited Lormac is the third oldest business in our industry in London Ontario and is accredited by the Canadian Better Business Bureau.

SAWDACCSA Home Star Award for Best in Windows and Doors
Window Wise Dealer Window Wise Installer EPA Pollution Preventer

Visit Us At Our Special Events & Home Shows
Showcase Homes - Our Recent Work
  • 356 & 358 Oxford St. W., London
    Windows, Soffit, Fascia, Trough & Siding on Gables
  • 36 Meadowview Rd, London
    Windows & Siding
  • 797 North Mile Rd., London
  • 16 Woodland Dr, Komoka
    Windows & Doors
  • 4739 Wonderland Rd. S., London
    Windows & Siding
  • 11546 Meadowniew Rd., Ridgetown
    Windows & Siding


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Address: LORMAC Renovation Centre 8374 Longwoods Road, London, Ontario, N6P 1L5 | Toll Free: 1-800-205-6219
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Lormac Inc., Home Improvements, London, ON

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