North Star Windows & Doors

• ▸Country: Canada
• ▸Founded: 1985
• ▸HQ: St. Thomas, Ontario
• ▸Scale: Ontario's largest vinyl window manufacturer
• ▸Innovation: Fibreglass co-extruded reinforcement in vinyl frames
• ▸Parent company: Cornerstone Building Brands
• ▸Market tier: Mid-Range

• ▸Fibreglass co-extruded vinyl windows
• ▸Casement and awning windows
• ▸Sliding windows and patio doors

The fibreglass co-extrusion process means the reinforcement is integral to the frame profile rather than inserted separately. This produces a more consistent thermal break across the frame section - the frame does not have the differential expansion point where a steel insert meets the vinyl. Ontario Great Lakes humidity means vinyl windows here accumulate mould and mildew staining in frame channels and at drainage points faster than in drier Prairie climates. Track cleaning intervals need to reflect this. Lake-effect snow deposits heavy wet snow loads on sills and in track channels. The weight of wet snow compresses weatherstrips and packs tracks in ways that light dry Prairie snow does not.

This is how I clean North Star Windows & Doors windows. The tools and technique below come from 25 years of daily professional work on the glass. Every step has been tested on real installations and adapted specifically for North Star Windows & Doors systems.

• ✕Do not use abrasive pads on vinyl or co-extruded fibreglass-reinforced frames
• ✕Do not use solvent-based cleaning products on any vinyl surface
• ✕Do not pressure wash into frame joints or weep holes
• ✕Do not skip spring track clearing after lake-effect snow seasons

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