Project Overview
- Property Type: 2‑storey family home, built 2015
- Location: North York, Toronto, Ontario
- Windows Fitted: 12 awning windows + 1 large (3,200mm) sliding patio door
- Product Used: MBORMC H01 Retractable Roll‑Up Screen
- Frame Color: Dark Bronze / Black (RAL 9005) to match window frames
- Mesh: PET high‑tensile (spring mechanism, smooth retraction)
Results & Impact
- Zero winter damage to screen mechanism after -25°C freeze‑thaw cycles
- Unobstructed use of sliding patio door — screen rolls away when not needed
- No mosquito intrusion during summer — family can now sleep with windows open
- Modern low‑profile design preserves home‘s contemporary aesthetic
- Smooth spring mechanism withstands daily use without sagging
📋 Background & Challenge
Located in North York, a rapidly growing suburban district in the northern part of Toronto, this two‑storey family home was built in 2015 with a modern, minimalist aesthetic. The home features twelve awning windows — a common window style in Ontario — positioned high on walls for privacy and ventilation without compromising floor space. The main floor‘s living area opens to a large backyard through a 3.2‑meter sliding patio door, which was a major selling point for the family when they purchased the home.
Toronto‘s winters are among the coldest of any major city in North America. Temperatures regularly drop to between -20°C (-4°F) and -25°C (-13°F), with extreme wind chills below -30°C (-22°F)[reference:0][reference:1]. The city also experiences dramatic freeze‑thaw cycles each spring, which place immense stress on any exterior‑mounted equipment. The homeowners, a professional couple with two young children, had already tried cheap “off‑the‑shelf” magnetic mesh screens for their awning windows. Within a single winter, the low‑quality screens had become brittle, cracked around the edges, and could no longer hold their shape.
Key challenges they faced included:
- Harsh winter conditions: Standard fibreglass and many screen materials become brittle and crack when repeatedly exposed to sub‑25°C temperatures. The homeowners needed a product that could survive regular freeze‑thaw cycles (daytime thaw, nighttime freeze) without losing elasticity or structural integrity.
- Awning window operation: Awning windows in Toronto are often placed high on walls and open outward. Any screen must allow the window to open fully without interference, and must be easily accessible for operation — the H01‘s retractable design solved this.
- Large patio door span: The 3.2‑meter sliding patio door is a focal point of the living room. Traditional sliding screens on tracks were rejected by the homeowners because they would permanently block the view and require heavy sliding panels. They wanted an insect screen that was completely invisible when not in use.
- Mosquito intrusion & health concerns: Ontario experiences mosquito activity from April through November, and West Nile virus (WNV) is endemic across the province, transmitted by Culex mosquitoes[reference:2]. In July 2025, Toronto recorded Canada‘s first domestically acquired human case of West Nile virus for the year[reference:3]. As a family with young children, the homeowners took mosquito protection seriously — they wanted to be able to keep windows and the patio door open for fresh air during summer evenings without exposing their children to mosquito‑borne diseases. West Nile virus is endemic in Canada, with transmission most common from late August through the first frost (late September or October)[reference:4]. The family felt strongly that with cases confirmed in Toronto, a high‑quality insect barrier was no longer a “nice‑to‑have” but an essential household upgrade.
- Aesthetic preservation: The house has a contemporary design with dark bronze/black window frames. Any screen system had to blend seamlessly, using a matching dark colour and a low‑profile cassette that would not protrude noticeably.
🔧 The MBORMC Solution
MBORMC proposed its H01 Retractable Roll‑Up Screen — purpose‑engineered for extreme temperature ranges and high daily usage. The system addressed every challenge:
Extreme Cold‑Weather Engineering
Standard aluminium frames with powder coating can become brittle and crack in -25°C freezes — a common cause of premature screen failure in Canadian homes. MBORMC uses premium 6063‑T5 aluminium that maintains its toughness and structural integrity down to -40°C, while the powder‑coated finish resists chipping and peeling even after repeated freeze‑thaw cycles. The spring retraction mechanism is also cold‑rated, using specially formulated springs that do not lose tension or seize up when temperatures drop, ensuring smooth year‑round operation (a critical requirement given Toronto‘s long winters).
Seamless Awning Window Integration
The H01 mounts inside the window frame, so it does not obstruct outward‑opening awnings. The cassette sits flush at the top of the frame, and the mesh rolls down easily by hand — no reaching up to awkwardly stretch a screen across the window. The homeowners can open and close their high‑mounted awning windows as usual, with the screen rolling up automatically when not needed.
Large Sliding Patio Door – Roll‑Away Design
For the 3.2‑meter sliding door, a standard sliding screen with a fixed track would have required two heavy panels that slide along the floor — visually intrusive and mechanically cumbersome. The H01‘s retractable design is much more elegant: the mesh rolls up into a slim 90mm x 90mm cassette that is installed on the side of the door frame. When the family wants fresh air without midges or mosquitoes, they simply pull the mesh across — the door can still slide freely behind it. When the screen is not needed, they retract it into the cassette, leaving the glass patio door completely exposed and the living room feeling open and light.
Modern Aesthetic & Colour Matching
The homeowners chose a Dark Bronze / Black powder‑coated finish (RAL 9005) to match their existing window frames. The slim cassette (90mm wide) is discreet — from a few metres away, it is almost invisible against the dark window frame. The PET mesh is black, providing an unobtrusive, high‑transparency barrier that does not darken the room. The result is a screen system that looks like it was part of the original architectural design.
✅ Why MBORMC H01 Was the Preferred Choice
Heavy‑Duty Aluminium Frame
The 6063‑T5 aluminium frame is powder‑coated with a salt‑spray‑resistant finish, rated to withstand corrosion even after years of exposure. Unlike fibreglass or uPVC frames that can warp in extreme cold, 6063‑T5 maintains its shape down to -40°C, with zero brittleness or cracking.
Smooth Spring Retraction Mechanism
The retracting system uses high‑tensile stainless steel springs that have been tested to over 10,000 operation cycles at -35°C without loss of tension. The homeowners reported that even after the first winter, the screens retracted as smoothly as the day they were installed — no sticking, no hesitation.
PET Mesh – Stronger than Fibreglass
High‑density PET mesh is more tear‑resistant than standard fibreglass, with 60% higher tensile strength. The 18×18 mesh density blocks mosquitoes, midges, and sand flies while providing 85%+ airflow and minimal light reduction. The fabric is also UV‑stabilised, so it will not fade or become brittle after years of direct summer sun exposure.
Global Logistics from Foshan
Each H01 screen was custom‑manufactured at MBORMC‘s factory in Foshan, China, using the homeowners‘ precise window measurements. Delivery via air freight to Toronto took 7 days, with each screen individually packed in reinforced cartons. The homeowner‘s contractor installed all 13 units in under 4 hours.
🛠️ Installation Process
The installation was completed by a local handyman in one afternoon following MBORMC‘s video guide (available in English and French). For the awning windows:
- The cassette was mounted inside the top of the window frame using the provided screws. (For renters or those wanting a no‑drill solution, the same screen can be installed with high‑grade adhesive tape — the homeowners preferred screws for added permanence.)
- The guide rails were then fixed to the sides of the frame.
- The mesh was pulled down, and the spring tension was adjusted.
For the large sliding patio door:
- The cassette was mounted vertically on the side of the door frame (right‑hand side).
- A bottom guide track (30mm wide) was screwed into the floor threshold — low profile, does not trip, and barely visible against the dark tile.
- The 3.2‑meter mesh was then pulled across and guided into a latch on the opposite side.
- The entire process took 3.5 hours, with no mess, no structural changes, and no disruption to the family living in the home.
The homeowners were particularly impressed that the sliding patio door could still be opened and closed while the screen was deployed — a key requirement for a home with young children who constantly run in and out to the backyard.
The homeowners reported that after using the screens through the full 2025 mosquito season (April to October), they experienced zero mosquito intrusions through any fitted window or door. The awning windows are now left open overnight during warm spells, and the patio door is used freely throughout the evening without attracting insects into the living room. The H01‘s ability to withstand the Toronto winter was fully proven: after the first freeze‑thaw cycle (November 2025 to March 2026), all screens remained fully functional with no cracks, warping, or spring degradation.
📦 Product Used in This Project
MBORMC H01 Retractable Roll‑Up Screen
- ✓ 6063‑T5 aluminium frame — any RAL colour, powder‑coated
- ✓ PET or 304 stainless steel mesh (cold‑rated springs)
- ✓ Smooth spring retraction — tested to -35°C
- ✓ Low‑profile cassette — rolls away when not in use
- ✓ Made‑to‑measure for any window type: awning, casement, sliding, French
- ✓ 2‑year warranty, global shipping from Foshan
Key Specs for this Project
- 📐 Awning window sizes: 5 units at 900×1200mm, 7 units at 1100×1400mm
- 📏 Patio door: width 3,200mm × height 2,100mm
- 🎨 Frame colour: Dark Bronze / Black (RAL 9005)
- 🦟 Mesh: Black PET high‑tensile, 18×18 mesh density
- 🔧 Installation: Awning windows — screw mount inside frame; patio door — side cassette + bottom track
- 📦 Delivery: 7 days air freight (Toronto Pearson airport)
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