Business Details
50+ Years
experience
Expert Custom Windows and Doors in St. Catharines
Since 1973, Fleming Windows has been transforming residential spaces with bespoke windows, doors, and glass solutions in St. Catharines and the Niagara Region. Our team of trained, insured professionals combines 50 years of industry expertise with a client-centric approach to deliver energy-efficient, durable products tailored to individual client visions. We specialize in custom designs, including heritage home restorations, frameless shower enclosures, and security-enhanced entryways, all backed by lifetime warranties on select products. Our commitment to quality craftsmanship and adherence to stringent standards like ENERGY STAR and NAFS 2014 has earned us a reputation as a trusted local leader in architectural customization. 
Services
Custom Windows
Exterior Doors
Glass Showers
Mirror Installations
Heritage Restoration
Details
- Year established: 1973
Highlights and features
- We offer 50 years of experience in custom window and door installations.
- Our team provides energy-efficient solutions certified by ENERGY STAR standards.
- We guarantee lifetime warranties on select KV Custom window products.
- Our designers collaborate with clients to create tailored architectural solutions.
- We prioritize local expertise with showroom consultations in St. Catharines.
Associations and certifications
- ENERGY STAR
- NAFS 2014
What people say
Excellent install
Life time warranty
So many compliments
Great quality
Extremely responsive
Services
Custom Windows
Crafting energy-efficient windows tailored to individual architectural needs. Our vinyl and fiberglass frames meet ENERGY STAR standards with double/triple weatherstripping and argon gas insulation. Ideal for climate control in Niagara's variable weather conditions.
Exterior Doors
Manufacturing insulated steel and fiberglass doors with decorative ironwork. Features include multi-point locking systems, thermal efficiency, and customizable designs ranging from traditional 4-panel to modern Linea styles.
Glass Showers
Installing frameless, semi-frameless, and framed shower doors with premium CRL hardware. Options include clear, frosted, or textured glass with stainless steel brackets for durability and modern aesthetics.
Mirror Installations
Creating custom mirrors for residential applications including safety-backed glass and beveled edges. Specializing in space-enhancing designs for hallways and functional backsplashes for kitchens.
Heritage Restoration
Recreating period-accurate windows for heritage homes using traditional techniques combined with modern insulation technology. Ensures preservation of architectural integrity while improving thermal performance.
Questions
What custom window options are available?
We offer casement, awning, double-hung, and slider windows in various colours with energy-efficient features like Low-E glass and argon gas insulation.
Do you service heritage homes?
Yes, we specialize in recreating historically accurate windows for heritage properties while incorporating modern energy-saving technologies.
Are your products energy efficient?
All windows meet ENERGY STAR standards with triple weatherstripping, warm-edge spacers, and argon gas fills for optimal thermal performance.
What shower door types do you install?
We offer frameless, semi-frameless, framed, and bi-fold shower doors with customization options for glass texture and hardware finishes.
Do you provide lifetime warranties?
Yes, KV Custom windows include lifetime warranties covering both materials and installation workmanship.
How do I get a custom quote?
Contact us directly through our website or visit our St. Catharines showroom for personalized consultations and detailed project estimates.
