PVC Window Jamb Extensions
Custom Made To Fit Your Window, Moisture-Resistant and Maintenance Free
What Are Window Jamb Extensions?
PVC jamb extensions are used to bridge the gap between the window or door frame and the interior wall. Often times they are finished with MDF or drywall but can be finished in hardwood as well. We recommend finishing with PVC as it is moisture resistant and ultra low maintenance, especially with our unique installation method.
Our jamb extensions are custom-cut to your specifications and made from moisture-resistant PVC—perfect for residential or commercial applications. Whether you're a contractor or a homeowner, our extensions ensure a seamless fit and durable performance in any environment.
Why Choose Our Jamb Extensions?
Custom Cut-to-Fit
Each piece is precisely cut to match your window and wall depth— simply install in place with no extra cutting required.
Moisture-Resistant
Made from high-quality PVC that won’t warp, swell, or rot in humid conditions.
Easy Installation
Ready to assemble right out of the packaging. Simply apply silicone to your window, lift the jamb in place and secure using the supplied clips.
Fast Turnaround
Quick processing and delivery—ideal for builders on a tight schedule or last-minute renos.
Custom Made to Fit Your Windows
Manufactured in Saskatoon, we custom build each jamb extension to fit not only the length and height of your jambs but also the depth of each corner. Our precision-cut PVC solutions make installation quick, clean, and reliable—perfect for contractors and DIYers alike.
PVC (Vinyl) Window Jamb Extensions Are Durable and Maintenance-Free
Our jamb extensions are ideal for high-condensation areas like bathrooms, basements, and kitchens. Unlike wood, PVC never warps or rots due to moisture exposure—making it a long-lasting, low-maintenance solution for modern homes and buildings.
PVC Window Jamb Extensions Flawlessly Match Your PVC Windows
Our extensions are designed to integrate seamlessly with your window frames—especially useful during renovations where jamb depth isn't known until windows are removed. Every piece is custom-fit to ensure a clean, professional finish every time.
Built to Fit Precisely — No Guesswork Required
Each order is crafted to your exact measurements. Whether you're a seasoned contractor or tackling a DIY project, our process eliminates guesswork and saves you valuable time on site. Simply measure, order, and install with confidence.