Sunroom Windows That Work Through London's Full Climate Range
Multiple glass and frame options. Sealed in January, fully open through the long Southwestern Ontario summer.
Multiple glass and frame options. Sealed in January, fully open through the long Southwestern Ontario summer.
A sunroom window in London has to handle the full Southwestern Ontario range — cold enough in January to require a solid seal, humid and warm enough in July that ventilation is essential. London’s shoulder seasons are long and variable, which means a well-chosen window system gets used more months of the year than in cities with more predictable climates.
Craft-Bilt installs 4-track stacking windows and Vista sunroom windows, available in multiple glass and frame options to suit your specific enclosure. Every window is sized and installed for your London sunroom or porch — fully open through the long warm season, sealed tight when the cold arrives.
Four-track stacking windows for sunrooms and outdoor enclosures. Each sash stacks independently — fully open, partially open, or fully closed with a weather-tight seal. In London’s shoulder seasons, partial opening is the right setting: enough air movement to keep the space comfortable without letting the cold in entirely. In July, fully open. In January, fully sealed. Aluminum frames are finished with a tough, baked-on coating that won’t peel or flake and don’t warp, rack, or swell under London’s temperature swings. Available in multiple sizes to fit existing or new sunroom framing.
Fixed and operable window systems for four-season sunroom additions and enclosed porch conversions. Vista windows are designed for continuous glass runs that maximize the indoor-outdoor connection — minimal frame, maximum view. Multiple glass options available. Installed to a weather-tight standard that meets Ontario Building Code requirements for enclosed sunroom additions. The right choice for homeowners building a four-season room where thermal performance matters alongside the view.
Get an instant price estimate for enclosing your London porch or pergola. Enter your opening dimensions for immediate pricing.
See what homeowners and contractors in your area are saying about their experience with Craft-Bilt products, service, and craftsmanship.
Explore the latest company updates, project highlights, expert insights, and outdoor living inspiration from Craft-Bilt.
Whether you’re looking to add value to your home to sell, or you’re undertaking home improvements to upgrade your property for changing family needs, the three questions you should ask yourself are “is it beautiful?
Our team is here to help! Contact us for personalized answers to your specific questions.
Q1. What is the difference between 4-Track Stacking Windows and Vista Sunroom Windows for my London porch?
It comes down to how much airflow you want and how the space looks. Vista windows slide horizontally and open about 50% of the panel, giving a classic, clean look for a London screened porch. The 4-Track Stacking Window opens up to 75% by stacking the glass panes at one end, so on a hot London summer evening you get close to a fully open room. Both are custom-sized to your openings and come in four colours. Maximum summer breeze: go 4-Track. Traditional window look with a solid shoulder-season seal: Vista.
Q2. Can I convert my existing London screened porch to a three-season room without rebuilding it?
Yes, and it is one of the most popular things we do for local homeowners. Vista windows are custom-made to fit into your existing aluminum or wood porch framing with no structural rebuild required. Most local homeowners go from using their porch three months a year to using it six or seven months.
Q3. How long does window installation take for an London porch or sunroom?
A straightforward Vista window installation into an existing London porch is typically a one-day job. If windows are part of a larger sunroom build, the window portion itself runs one to two days. Since every window is custom-made to order, lead time is the bigger variable. London contractors are busiest April through July, so ordering early in the year gets you ahead of the lineup.
