Experience unparalleled comfort and energy efficiency in your $Guelph home with our bespoke windows and doors. Designed to withstand the unique demands of Ontario's climate, our solutions blend seamlessly with your property's aesthetic, enhancing both its beauty and performance.
60% Energy Savings
Highest R-Value in Industry
$5,000 Rebates
Government Certified
0% Financing
No Payments Until 2026
When it comes to upgrading your home’s windows and doors in Guelph, you want a trusted partner who truly understands the local climate and your energy-saving goals. That’s where we come in. As Formcorex certified installers, we specialize in installing premium Formcorex windows and doors designed to perform exceptionally well in Guelph’s variable weather—from chilly winters in neighborhoods like Kortright Hills to humid summers in Clairfields. Our ENERGY STAR certified products help keep your home comfortable year-round while lowering your energy bills, making them a smart investment for any homeowner.
One of the biggest benefits our customers see is a noticeable reduction in draftiness and improved temperature regulation. For example, a family in Exhibition Park recently upgraded to our fiberglass Formcorex windows with triple-pane glass, and they reported a significant drop in their heating costs during a particularly cold winter. Our products feature advanced thermal breaks and low-E coatings that are tailored to Ontario’s climate, ensuring your home stays warmer in winter and cooler in summer. Plus, with vinyl, fiberglass, and wood options available, you can choose the perfect style and durability for your home’s character and your budget.
Custom Contracting is Ontario's exclusive provider of FoamCoreX™ - the most advanced foam-filled window technology that eliminates air pockets and thermal bridging for maximum energy efficiency.
| Feature | FoamCoreX™ Windows | Traditional Triple Pane | Standard Double Pane | Single Pane |
|---|---|---|---|---|
| R-Value (Insulation) | R-9+ | R-5 | R-3 | R-1 |
| Energy Savings | Up to 60% | Up to 35% | Up to 20% | Baseline |
| U-Factor | 0.18 | 0.25 | 0.30 | 1.00 |
| Sound Reduction (STC) | 52 (75% reduction) | 42 (50% reduction) | 32 (30% reduction) | 26 (15% reduction) |
| Frame Strength | 300% Stronger | Standard | Standard | Weak |
| Warranty | 25 Years Transferable | 10-15 Years | 5-10 Years | 1-2 Years |
| Average ROI | 3-5 Years | 7-10 Years | 10-15 Years | N/A |
Complete elimination of air pockets for maximum insulation
300% stronger than hollow frames - no warping or bowing
Up to 60% reduction in heating and cooling costs
Industry-best protection that adds value to your home
Traditional windows have hollow chambers in their frames that allow air to circulate, creating thermal bridging and energy loss. FoamCoreX™ technology fills every chamber with high-density polyurethane foam, creating a continuous thermal barrier that revolutionizes window performance.
Custom Contracting is the only certified FoamCoreX™ installer in Ontario, ensuring you get authentic technology with factory-trained installation and full warranty protection.
Guelph's rich tapestry of architecture calls for a diverse range of window styles. Whether you reside in a historic property or a contemporary family home, our extensive collection offers designs that perfectly blend with your property's unique character.
Starting at $575 per window
Lifetime hardware warranty
| Size | Price |
|---|---|
| 24" x 36" | $575 |
| 30" x 48" | $625 |
| 36" x 60" | $695 |
| 48" x 72" | $795 |
*Prices include FoamCoreX™ technology and professional installation
Every component is engineered for maximum performance and longevity
Complete Assembly View
Corner Joint Detail
FoamCoreX™ Multi-Layer Construction
Triple-Pane Technology
Multi-Chamber Design
See how each component comes together in perfect sequence
Explore each layer of our advanced window construction
Three layers of glass with dual Low-E coatings block up to 99% of harmful UV rays while keeping your home comfortable year-round.
90%+ argon gas fill between panes provides superior insulation compared to air, reducing heat transfer dramatically.
Save up to $850 per year on energy bills compared to old single or double-pane windows.
Triple-layer compression seals keep drafts out
Stainless steel components built to last
Advanced locking for maximum protection
See the dramatic difference in heat retention with infrared imaging
Real-time visualization of R-value, U-factor, and energy savings
🔍 Slide to reveal internal structure and see what makes our windows superior
Experience next-generation door technology with FoamCoreX™ insulation, smart security features, and cutting-edge design trends.
For Guelph homes, our door collection offers both robust security and elegant design.
FoamCoreX™ technology delivers superior insulation, reducing energy bills by up to 25%.
Multi-point locking systems, smart lock compatibility, and reinforced construction.
Compatible with leading smart home systems, keyless entry, and remote monitoring.
Maximum security & durability
Wood look, zero maintenance
Transform your indoor-outdoor living experience with our premium patio door collection
Space-saving design with smooth operation. Available in 2, 3, or 4-panel configurations.
Classic elegance with hinged operation. In-swing or out-swing configurations available.
Create a seamless indoor-outdoor living space. Panels fold and stack to one or both sides.
We pride ourselves on quality that lasts. Unlike many companies that outsource installation, all of our work is done in-house by our own trained crews—never subcontractors. This approach means we maintain strict quality control and back every project with a lifetime workmanship warranty. If any issues arise, you can call us directly at (226) 799-4975, and we’ll address your concerns promptly. This commitment has earned us a top-rated reputation on Google, where our customers consistently praise our professionalism, attention to detail, and friendly, transparent communication.
Another advantage of choosing us is access to over $5,000 in government rebates available for ENERGY STAR certified window and door replacements. We help Guelph homeowners navigate the rebate process, making it easier to upgrade without breaking the bank. Whether you live in the historic downtown core or one of the newer subdivisions in the north end, we tailor solutions to meet your specific needs and maximize your savings.
Guelph homeowners can access up to $5,000 in rebates and grants for energy-efficient window upgrades in 2025. Combined with our 0% financing options, there's never been a better time to upgrade your windows.
Guelph residents can take advantage of various local and national initiatives. The Government offers programs providing support for energy-saving upgrades. Our team can help you navigate these programs and identify potential savings.
Savings: Up to $40,000 interest-free
Get up to $325 per window opening for qualifying ENERGY STAR windows. Maximum rebate of $5,000 per household.
Savings: Up to $5,000
Provincial rebates for energy-efficient home improvements including windows and doors. $100 per window replacement.
Savings: $100 per window
Book a pre-retrofit energy assessment with a certified energy advisor. Required for most rebate programs.
All FoamCoreX windows meet or exceed ENERGY STAR requirements for the Northern Climate Zone.
Use a certified installer like Custom Contracting. Proper installation is crucial for rebate approval.
We help you complete all paperwork. Most homeowners receive rebates within 8-12 weeks.
From your first consultation to final inspection, we make window replacement easy and stress-free for Guelph homeowners.
We visit your Guelph home to assess your needs, take measurements, and provide a detailed quote with rebate information.
Your FoamCoreX windows are custom-built to your exact specifications, typically ready in 4-6 weeks.
Our certified installers complete most projects in 1-2 days with minimal disruption. We protect your home and clean up completely.
We conduct a thorough inspection, demonstrate operation, and activate your 25-year transferable warranty.
Complete visual guide to our installation process
See how windows are properly integrated into your walls
Schedule your free consultation today and discover why Guelph homeowners trust Custom Contracting
Book Your Free ConsultationIf you’re ready to enhance your home’s comfort, energy efficiency, and curb appeal with windows and doors built for Guelph’s climate, give us a call today at (226) 799-4975. Let’s discuss your project and show you why so many local homeowners trust us for lasting quality and expert installation. Your home deserves the best—and we’re here to deliver.
Guelph is home to many beautiful historic properties. We specialize in replacement windows that honor your home's architectural heritage while delivering modern performance.
For owners of historic Guelph homes, preserving architectural integrity while upgrading to modern performance is paramount. Our bespoke window and door solutions are designed to respect and enhance traditional aesthetics, offering period-appropriate styles that meet conservation guidelines.
Many Guelph heritage properties require approval for exterior changes. We have extensive experience working with local heritage committees and conservation districts.
We handle all documentation and ensure your new windows meet both heritage standards and modern building codes.
Get Historic Home ConsultationGuelph experiences Ontario's distinct seasons with cold winters and warm summers, necessitating robust and thermally efficient windows and doors to maintain a consistent indoor environment.
Cold Ontario winters can expose inefficient windows, leading to uncomfortable drafts and soaring energy bills. Our foam-filled frames provide an airtight seal, stopping heat loss in its tracks.
High humidity can lead to condensation between glass panes, promoting mold growth. Our advanced sealing technology and insulated frames prevent this, ensuring a clear view and healthy home.
Temperature and humidity swings can cause frames to warp. Our 300% stronger FoamCoreX™ frames are guaranteed not to warp, bow, or crack.
Custom Contracting is your trusted local expert for window and door replacement. We serve all of Guelph, including these and many other fine neighborhoods:
Old University
Exhibition Park
West End
St. George's Park
College Hill
Stone Road
Kortright Hills
Westminster Woods
Rickson Ridge
Paisley
Willow West
City Centre
Hanlon Creek
Two Rivers
Waverley
Dean Avenue
From installation to replacement, we offer complete window and door solutions tailored to Guelph homes.
Professional window installation services with expert craftsmanship and guaranteed quality for Guelph homes.
Learn More →Complete door replacement solutions including entry doors, patio doors, and more.
Learn More →Save up to 60% on energy costs with our high-performance energy efficient windows.
Learn More →Transparent pricing and financing options for your window replacement project.
Learn More →Preserve the character of your historic home with period-appropriate window solutions.
Learn More →Professional commercial window solutions for businesses and multi-unit properties.
Learn More →Guelph homeowners ask us these questions about window and door replacement
Most full-home window replacements (10-15 windows) take 1-2 days. Single window replacements can be completed in 2-3 hours. We work efficiently to minimize disruption to your daily routine.
While we install year-round, spring and fall offer ideal conditions. However, winter installations are possible and can provide immediate energy savings. Book early for spring/summer installations as these are our busiest seasons.
Most window replacements (same size, same location) don't require permits. However, heritage properties or changes to window size/location may need approval. We handle all permit requirements for you.
Guelph homeowners typically save $850-$1,200 annually with FoamCoreX windows. Savings depend on your current windows, home size, and heating/cooling system. Most homeowners see ROI within 3-5 years.
All FoamCoreX windows include a 25-year transferable warranty covering glass, frame, hardware, and installation. This is the best warranty in the industry and adds significant value when selling your home.
Yes! We offer custom colors, grilles, hardware, and styles to match any home architecture. This is especially important for Guelph's many historic homes.
We proudly serve communities across Southern Ontario
Join thousands of satisfied Guelph homeowners who have upgraded to FoamCoreX windows and doors. Get your free quote today and start saving on energy bills immediately.
Serving all Guelph neighborhoods with expert installation and lifetime warranty
Our team has been serving Guelph homeowners with hands-on expertise for years. We've completed thousands of projects across every neighborhood, understanding the unique challenges of Guelph's climate, building codes, and property types.
All our contractors are: Licensed, insured, background-checked, and continuously trained on the latest industry standards and techniques. We invest in ongoing education to ensure we deliver cutting-edge solutions.
All our installation work is backed by our lifetime workmanship warranty
No hidden fees. Detailed quotes with all costs itemized upfront
We don't consider the job done until you're 100% satisfied
Don't miss this 60% OFF offer! Contact us today.
📍 Visit Us
45 Worthington Dr Unit H
Brantford, ON N3T 5M1
✉️ Email Us
infor@customcontracting.ca