Vinyl & fibreglass.
Compare the assembly, not the label.
Vinyl and fibreglass products come in different profiles and performance levels. Compare the actual model, reinforcement where relevant, glazing, frame dimensions and whole-window ratings rather than relying on a material ranking.
What to settle before you order
Review colour limitations, hardware support and the proposed perimeter detail. Ask the installer to explain the product’s expansion and fastening requirements.
Make the quote a complete picture
Ask for the manufacturer, model, dimensions, glass package, frame finish and hardware. The installation scope should describe removal, opening preparation, flashing, insulation, sealants, interior and exterior finishing, disposal and site protection.
Product and workmanship are different promises
Request both warranty documents and a named service contact. Record what happens if removal reveals concealed damage, and approve additional work in writing.
NRCan: certified windows and product guidance ↗A little more light.
A lot more considered.
Tell us what you have in mind ↗No pressure. Share your location and project; we’ll review the fit and availability.