DOORS AND WINDOWS
LASALLE
Whether you are gearing up for a new home construction or giving your current living space a well-deserved transformation, our expertise in doors and windows in LaSalle guarantees results that align with your expectations and, more often than not, go considerably beyond them. Every project we carry out is a valuable opportunity to demonstrate our unwavering commitment to quality and to the full satisfaction of every customer who places their confidence in us.
Formulaire - Homepage EN
High-end door and window solutions in Lasalle
Fenplast for residential projects and contractors in Quebec
The trusted partner of residential contractors and homeowners taking on renovation projects, D&P Marchand crafts its doors and windows in LaSalle through a completely integrated manufacturing process, starting from the extrusion of PVC profiles and continuing all the way through to the finished product. This total mastery of each stage of production guarantees irreproachable results and remarkable uniformity, project after project, regardless of scope or complexity.
Our doors and windows in LaSalle are celebrated for their robustness, impeccable finishes, and excellent insulating capabilities. The vast majority of our models are ENERGY STAR® certified, delivering tangible, everyday advantages including a markedly more comfortable home and genuine savings on your energy bills.
Whether you are embarking on your first construction project or finally pushing forward with a renovation you have been planning for some time, trusting our doors and windows in LaSalle means selecting attractive, long-lasting products engineered to stand up to the full intensity of Quebec's climate, through every season without exception.
THE 3 ADVANTAGES OF CHANGING YOUR DOORS AND WINDOWS IN LASALLE
+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 Lasalle
The Solarcom line offers versatile, high-performing commercial aluminum doors and windows in LaSalle, specifically developed for multi-residential and commercial projects of any scale. Its modular architecture and extensive array of assembly configurations make it the solution of choice for architects, general contractors, and project managers who require flexibility without compromising on precision.
Designed to bring together durability, structural solidity, and energy efficiency, our commercial doors and windows in LaSalle deliver consistent, reliable performance in every season. CW-rated, the Solarcom collection achieves an outstanding balance between thermal efficiency, structural robustness, and straightforward installation, while blending seamlessly into modern buildings, institutional environments, and professional spaces of all kinds.
Built with reinforced aluminum frames and highly capable thermal barriers, our commercial doors and windows in LaSalle represent a durable, secure, and aesthetically pleasing investment, fully in keeping with current building codes and the climatic conditions that LaSalle's environment demands.
OUR GUARANTEES
Our warranty program has been developed with care to provide Quebec homeowners with comprehensive, relevant protection suited to our climate and to the particular demands of residential replacement projects for doors and windows in LaSalle.
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 produced to withstand the significant temperature swings that define Quebec winters while preserving its energy performance at an excellent level over the long term. In addition to our own installation warranties, you also enjoy the coverage provided directly by the manufacturers of doors and windows in LaSalle whose products we distribute.
D&P MARCHAND DOORS AND WINDOWS ON THE SOUTH SHORE OF MONTREAL
Founded in 1979, D&P Marchand is a Quebec family business with strong, lasting roots on Montreal's South Shore, with over 45 years of expertise in the replacement of residential and commercial doors and windows. Throughout these decades, we have been a steadfast partner for homeowners and contractors navigating renovation projects, including doors and windows in LaSalle, bringing them durable solutions that are well suited to Quebec's climate and the day-to-day realities of homes throughout the region.
Our seasoned advisors are available to deliver personalized guidance at every phase of your project, whether you drop by our showroom or prefer a consultation at your own property, so that we can gain a thorough understanding of your needs and point you toward the products that best match your home and your budget. Every installation is completed by our dedicated in-house teams, who carry out meticulous on-site measurements before any work begins, ensuring careful workmanship, consistent quality, and dependable after-sales service.
For new construction projects or supply-only orders, our delivery service makes certain that quality products arrive at your site precisely when you need them. Our promise is straightforward: to offer a complete, transparent, and fully professional experience so that every doors and windows in LaSalle project is handled with the utmost care and produces results that endure well into the future.
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!!






















