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Recycled vinyl is cheaper but yellows and warps faster. Ask for proof.

Fusion welding melts corners together — no weak points.

Some companies quote double-pane by default and charge extra for triple.

SuperSpacer silicone is the warmest. Aluminum spacers create cold edges and condensation.

Only ~17 companies in Canada hold this certification. It means independent audits and training.

In-house crews mean consistent quality and accountability.

Foam seals every gap. Batt insulation settles and leaves cold spots.

Full site protection should be standard, not an afterthought.

Most competitors exclude it. A hockey puck could cost you $300–800 to fix.

Some charge $150+ per service call as early as Year 2.

A transferable warranty increases your home's resale value.

If they won't show you the full terms, that's a red flag.

Paying after means you can inspect the work first. Some companies demand full payment upfront.

Manufacturers control quality from start to finish. Dealers resell someone else's product.

Insert installs leave the old frame in place — less insulation, smaller glass area.

Some quotes look cheaper because they don't include the trim work.

Removal fees or dumpster costs can add hundreds to your final bill.

Some companies add 2–3% on every payment including your downpayment.