DOORS AND WINDOWS
LONGUEUIL
Are you planning a new construction or residential renovation project? Our expertise in doors and windows in Longueuil ensures results that match your expectations and, in most cases, surpass them. Every project is a new opportunity for us to demonstrate our commitment to quality and the satisfaction of our customers.
Formulaire - Homepage EN
High-end door and window solutions in Longueuil
A reliable partner for contractors and homeowners taking on renovations, D&P Marchand operates with a fully integrated manufacturing process for doors and windows in Longueuil, covering everything from PVC profile extrusion to final assembly. This end-to-end control of the production chain guarantees consistent, high-quality results from one project to the next.
Our doors and windows in Longueuil are recognized for their sturdiness, careful finishes, and strong thermal performance. The great majority of our models carry the ENERGY STAR® certification, which means a more comfortable living environment throughout the year and meaningful reductions on your energy bills.
Whether you are embarking on a first build or a renovation project years in the making, choosing our doors and windows in Longueuil means investing in durable, visually appealing products built to hold up against Quebec's challenging climate, year after year.
THE 3 ADVANTAGES OF CHANGING YOUR DOORS AND WINDOWS IN LONGUEUIL
+70%
Over 70% of homeowners in Quebec prefer a local manufacturer when undertaking door and window renovation projects. Choosing locally made products means supporting the local economy while benefiting from windows specifically designed for the Quebec climate.
15%
Energy-efficient doors and windows designed for Quebec winters can reduce annual heating costs by up to 15%. Improved insulation directly contributes to home comfort and long-term energy savings.
#1
Replacing doors and windows is among the top three residential renovations offering the best return on investment in Quebec. It's an improvement that increases property value, energy efficiency, and visual appeal.
COMMERCIAL PRODUCTS
A versatile and high-performance aluminum solution in Longueuil
The Solarcom line delivers versatile, high-performance commercial aluminum doors and windows in Longueuil, purpose-built for multi-residential and commercial developments. Its modular design and wide range of assembly configurations make it a go-to solution for architects, general contractors, and project managers.
Built for durability, structural strength, and energy efficiency, our commercial doors and windows in Longueuil perform reliably in every season. CW-rated, the Solarcom collection strikes the right balance between thermal performance, structural resistance, and straightforward installation, all while fitting seamlessly into modern buildings, institutional structures, and professional environments.
Featuring reinforced aluminum frames and highly effective thermal barriers, our commercial doors and windows in Longueuil are a sound, attractive, and safe investment, fully in line with current construction standards and Quebec's climate realities.
OUR GUARANTEES
Our warranty program has been developed to give Quebec homeowners thorough coverage, tailored to our climate and the specific requirements of residential replacement projects for doors and windows in Longueuil.
5-year labour warranty on the installation of residential doors and windows.
10-year warranty against thermal seal failure on replacement units.
1-year warranty against thermal breakage on replacement thermal units.
Our glazing is engineered to handle the temperature swings of Quebec winters while preserving its energy performance over the long haul. On top of our own installation warranties, you also benefit from the coverage provided directly by the manufacturers of doors and windows in Longueuil that we carry.
D&P MARCHAND DOORS AND WINDOWS ON THE SOUTH SHORE OF MONTREAL
Founded in 1979, D&P Marchand is a Quebec family business with deep roots on Montreal's South Shore, specializing in the replacement of residential and commercial doors and windows. For more than 45 years, we have guided homeowners and contractors through their renovation projects for doors and windows in Longueuil, providing lasting solutions that reflect the Quebec climate and the character of local homes.
Our advisors offer personalized support, whether at our showroom or at your property, to get a clear picture of your needs and point you toward the products that best fit your home and your budget. Every installation is completed by our in-house teams following thorough on-site measurements, ensuring precise workmanship, reliable quality, and dependable after-sales support.
For new construction projects or orders without installation, our delivery service gets quality products to your site exactly when you need them. Our goal stays the same: to provide a complete, transparent, and professional experience so that every doors and windows in Longueuil project goes smoothly from start to finish.
WHAT OUR CUSTOMERS SAY ABOUT US
Jean-Philippe M.
5 weeks ago
Second home project and second project completed by D&P Marchand. WOW! What service! We are SO satisfied with the welcome, consultation, and installation service that we recommend them to everyone. Bravo to D&P Marchand and their ENTIRE team.
Robert L.
10 weeks ago
The best in their field, from their advice on existing windows and replacements to the installation team! No negative points in my experience with them.
Hi there.
2 weeks ago
Very high-quality work, highly competent staff attentive to customer needs. And finally, excellent after-sales service.
Linda T.
8 weeks ago
What a fantastic team! Our salesperson immediately put us at ease. He gave us excellent advice and helped us choose the products. The installation appointment was on time, down to the minute. We have nothing but praise for the entire team. Five thumbs up!!






















