Local production in Cobble Hill, clear specifications by series, and long-term support on the Island.
Manufacturing in Cobble Hill. Showroom and team support on the Island.
Thermoproof started building windows on Vancouver Island in 1977 with a straightforward goal: manufacture systems that hold up in coastal exposure.
Salt air, wind-driven rain, and sustained moisture can shorten the service life of hardware and seals when products are specified for different climates. Over time, we saw that many off-Island window packages did not perform as well once installed in Island conditions.
That is why we manufacture locally and support projects locally. Homeowners and building professionals work with Thermoproof for clear specifications by series, predictable scheduling, and service continuity after installation.
Over the decades, we have manufactured more than 1 Million Window units for homes and projects across Vancouver Island.
Local manufacturing keeps accountability close. If you want to see how your windows are built, we welcome factory visits by appointment.
What it means in practice
Thermoproof manufactures windows and doors in Cobble Hill. Local production lets us control scheduling, build consistency, and long-term service support without relying on container timelines or long freight handoffs.
Most custom orders are typically ready in about three weeks, with timelines confirmed on your quote. Select in-stock configurations may be available sooner, often around 10 business days.
Support is handled locally on Vancouver Island. If you need service, you reach a team here, with a defined process for follow-up and warranty support.
Manufacturing, documentation, and installation coordination are managed under one standard. Specifications, performance documentation, and configuration options are provided by series & confirmed before production.
Thermoproof is factory-direct. Quotes include a clear breakdown, and pricing is consistent year-round without promotion-driven markups.
PROS+ is the operating standard behind how Thermoproof builds and supports every project. It reflects the three things we control and document from quote to long-term service.
What this Means in Practice
You receive a system specified for your exposure, a timeline confirmed before production, and a clear support path after installation.
Thermoproof has manufactured windows and doors on Vancouver Island since 1977. Longevity matters because it supports continuity, service, and accountability. When you need documentation, parts, or support later, you are dealing with the same local manufacturer and team.
Thermoproof series include NAFS-rated configurations, with LC and CW ratings available by design and size. These ratings relate to air infiltration, water penetration, and structural performance. Energy performance values, including U-values, are provided by series and glazing package and confirmed in your project documentation.
Your project is quoted and coordinated through the same organization that manufactures the product. Manufacturing takes place in Cobble Hill, which supports clearer scheduling, fewer handoffs, and direct accountability from specification through production.
Installation is completed by Thermoproof in-house teams or authorized partners trained to Thermoproof standards. Scope, responsibilities, and service pathways are clarified up front so homeowners know who is responsible for installation and who is responsible for manufacturing and product support.
Thermoproof has manufactured windows and doors on Vancouver Island since 1977. Longevity matters because it supports continuity, service, and accountability. When you need documentation, parts, or support later, you are dealing with the same local manufacturer and team.
Thermoproof series include NAFS-rated configurations, with LC and CW ratings available by design and size. These ratings relate to air infiltration, water penetration, and structural performance. Energy performance values, including U-values, are provided by series and glazing package and confirmed in your project documentation.
Your project is quoted and coordinated through the same organization that manufactures the product. Manufacturing takes place in Cobble Hill, which supports clearer scheduling, fewer handoffs, and direct accountability from specification through production.
Installation is completed by Thermoproof in-house teams or authorized partners trained to Thermoproof standards. Scope, responsibilities, and service pathways are clarified up front so homeowners know who is responsible for installation and who is responsible for manufacturing and product support.
Tell us what you’re replacing or building, your location, and any issues you’re seeing (drafts, condensation, noise, operation, or water exposure). We’ll ask a few practical questions to understand the scope
Based on the home or project requirements, we recommend the appropriate series and configuration options. You’ll see the rationale, not a sales pitch.
You receive a written quote with documented lead times and warranty terms. If installation is part of the project, responsibilities and handoff are confirmed upfront.
Thermoproof manufactures its first window on Vancouver Island, establishing a legacy of local craftsmanship.
We transition to high-performance uPVC products, setting a new standard for thermal efficiency in British Columbia.
Low-E (Low Emissivity) glazing becomes standard, blocking UV rays in summer and reflecting heat back inside during damp Island winters.
Thermoproof expands installation capability with in-house teams to support homeowners and builders.
A Courtenay branch opens to support the Comox Valley and surrounding areas.
We open our state-of-the-art manufacturing facility in Cobble Hill, boosting capacity to meet builder and homeowner demand.
Introduction of Thermoproof triple-pane windows, achieving the Energy Star Most Efficient rating for maximum rebate eligibility.
Implementation of patented seamless welding technology and robotic precision, delivering the strongest, cleanest corners in the industry
Honoured for fostering a diverse, inclusive workplace that strengthens our team and the quality we deliver to Island families.
Meet the Experts Behind your Windows
It takes real craftsmanship to build a Thermoproof window.
Production Manager
“We don’t cut corners on the floor. If a frame isn’t perfect, it doesn’t leave the Cobble Hill facility. We build every unit as if it were going into our own home.”
Senior Consultant
“My job isn’t to sell you a window. It is to solve a problem. Whether you need to block highway noise or meet NAFS code for a renovation, we find the right fit for your home.”
Certified Installation Lead
“We respect your home. That means arriving on time. Using drop cloths. Making sure you know exactly how to operate your new windows before we leave.”
Proudly Supporting our Island Community
Since 1977, our windows have protected Island homes, and our team has supported the organizations that make this place feel like home. We believe in building more than just quality products. we believe in building a stronger Vancouver Island.
Nourish Cowichan & Cowichan Valley Basket Society Supporting food security for children and local families across the region
Cowichan District Hospital Foundation Providing window renovations and facility upgrades to improve local healthcare.
Clements Centre Society Assisting with renovation projects that support belonging and independence for children.
Royal Canadian Marine Search & Rescue Supporting local search and rescue operations to keep our coastal waters safe.
The Kidney Foundation Contributing to life saving research and patient care through vehicle donations.
Cowichan Trail Stewardship Society Investing in the maintenance of local nature networks and the beauty of our region.
Cobble Hill Events Society Supporting local culture and community connection through Music in the Park.
Cowichan District Hospital Foundation Providing window renovations for local healthcare.
Serving homeowners from the heritage homes of Victoria to the storm-swept coasts of Tofino.
ThermoProof Portfolio
