Winter doesn't break most Tahoe glass — it finishes what fall neglect started. Walk this list before the first real storm and you'll fix small things on your schedule instead of big things on winter's.
The ten-minute walk-around
Outside, wall by wall: chips and cracks at pane corners and edges (thermal stress in a cold snap starts at exactly those flaws); fog or haze between panes (failing units lose more heat all winter); glazing and caulk pulling away from frames; and what's above each pane — icicle lines and metal-roof shed paths that aim at sliders, railings and low windows.
Inside: sliders that grind or hesitate (grit in the track becomes a dropped, cracked panel), latches that don't fully seat, condensation pooling on sills (a ventilation flag, and wood-rot fuel), and any window that's been 'painted shut or sticky since summer' — you want every bedroom window openable in winter, because that's the season of egress.
Fix-now versus watch
Fix before winter: any crack in any pane (cold will grow it), failed sealed units on the weather side of the house, slider rollers that grind, loose railing panels or chipped panel edges. These are all routine jobs in October and miserable ones in January — for you and honestly for us.
Watchlist items: hairline scratches (cosmetic), slight fog that clears (surface condensation, not seal failure — improve ventilation), and old-but-sound single panes on a heated cabin you're not ready to upgrade (add weatherstripping and heavy curtains this year, plan the re-glaze for spring).
Snow-shed zones: move the target or armor it
The most preventable winter glass claim in Tahoe: roof-shed snow avalanching onto a slider, railing or window well. Stand back and trace where each roof plane dumps. Glass in that path wants either a diverter/snow-clip solution on the roof (a roofer's fix, and often the right one) or tempered/laminated glass and beefier railing specs (ours).
We flag shed-path risks on every fall estimate because we're tired of replacing the same slider twice. If a diverter is the smarter money, we'll say so and you'll spend nothing with us — that's the long game.
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