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Fogging or haze between the panes that doesn't clear: the sealed insulating unit between a double-pane window's glass panes fails when the perimeter seal degrades and allows moist air in. Once moisture enters the air gap, it condenses against the interior glass surfaces and leaves a permanent haze — one that no cleaning can address because it's on the interior face of the sealed unit. Battle Ground homes built in the 1990s are now in the primary seal failure zone for their original windows. A persistent fog between panes is the most visible signal that replacement, not repair, is the right call.
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Drafts or air movement at frames, sills, or corners: weatherstripping in 1990s-era double-pane windows has now been through 25+ heat and cold cycles. The foam and brush seals compress, gap, and crack over time. Caulking at the exterior perimeter fails. Frame materials shrink and separate from the rough opening. If you can feel air movement near the window edge on a cold day or during a windstorm, the window is no longer functioning as a thermal barrier — it's a gap in your building envelope that's costing you on every heating bill from October through March.
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Condensation forming on the interior glass surface: when a window's thermal performance drops below the threshold for your indoor humidity level, the interior glass surface temperature drops below the dew point and moisture condenses on the room-facing glass. This is common in Battle Ground homes during the November–February heating season when the heating system is running continuously and outdoor temperatures are at their lowest. Interior condensation on the glass itself — not between the panes — is a thermal performance signal that the window is no longer providing adequate resistance to outdoor temperature.
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Builder-grade vinyl windows from the late 1990s through early 2000s: much of Battle Ground's residential development occurred during a period when builder-grade vinyl windows were the standard specification — adequate at installation, but not designed for a 30-year lifespan in a PNW environment. At 20–25 years old, these windows have compressed weatherstripping, degraded seals, fading frames, and often hardware that no longer operates cleanly. Replacing them with modern Energy Star rated ProVia windows delivers a measurable improvement in thermal performance and a meaningful improvement in comfort and operating cost.
What Window Replacement Delivers for Battle Ground Homeowners
Battle Ground's heating season mirrors the rest of Clark County — October through March, six months of sustained low temperatures during which an underperforming building envelope costs money on every utility bill. A properly installed ProVia replacement window closes the air infiltration paths that weathered weatherstripping leaves open, replaces degraded sealed units with factory-fresh Low-E glass, and eliminates the thermal conduction paths through frames that no longer maintain their original tight tolerance. For homes where the original 1990s windows are hitting the 20–25 year failure zone simultaneously, whole-home replacement is frequently the most efficient approach — the cost per window drops on a larger project, and you don't revisit the same problem over years as windows fail one at a time.
As a ProVia authorized dealer, Left Coast Exteriors provides factory-trained installation, the full ProVia product lineup, and warranty support that authorized dealer status unlocks. Every Battle Ground installation includes precise measurement of each rough opening before ordering — builder-era homes frequently have out-of-square openings from settling, and a window ordered to incorrect dimensions cannot be corrected on installation day. We confirm measurements and document opening conditions before any product is placed on order.
ProVia Authorized Dealer