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    RV Window Replacement

    Typical cost: $150 – $900 per window

    RV window replacement costs $200–$900 per window installed for most side, slider and awning windows, and $400–$1,200 for large frameless or dual-pane units. Fogged dual-pane windows can often be resealed or have the insulated glass unit rebuilt for $150–$400 instead of buying a whole new window. You need the brand (Hehr, Kinro, Lippert), the glass size and the wall thickness before anyone can quote it.

    Dual-pane RV side window on a white travel trailer showing a failed thermal seal between the glass panes
    A dual-pane RV window that has lost its thermal seal: the haze sits between the panes, so cleaning the surfaces changes nothing — the insulated unit has to be rebuilt or replaced.Photo: RV Glass Directory

    RV windows fail differently than windshields. Rather than rock strikes, the common problems are fogged dual-pane seals, cracked acrylic, leaking frames, broken slider latches, and torn screens — most of which are repairable without replacing the whole assembly.

    This page covers each RV window type, what replacement costs, and when a reseal beats a full swap.

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    RV window types and replacement cost

    Cost depends on the frame system as much as the glass itself.

    • Fixed side window (single pane): $150 – $400
    • Sliding window with screen: $250 – $550
    • Dual-pane insulated window: $400 – $900
    • Emergency exit window: $300 – $700
    • Frameless bonded window: $350 – $800
    • Entry door glass: $150 – $350

    Fogged dual-pane windows

    Condensation between the panes means the perimeter seal has failed and moisture is trapped inside. It will not clear on its own and it will slowly etch the interior glass surfaces.

    Two paths exist. Resealing sends the sash to a glass shop that separates the panes, cleans them, and rebuilds the seal — cheaper, but the coach loses that window for a week or two. Replacement with a new insulated sash costs more and is immediate. Coaches that spend time at altitude are the most frequent victims, since pressure swings work the seals hard.

    • Reseal existing sash: $150 – $300 per window
    • New dual-pane sash: $400 – $900

    Clamp-ring vs. screw-mounted windows

    Most travel trailer and fifth wheel windows use a clamp-ring system: the window frame slides in from outside and an interior ring screws against it, sandwiching the sidewall. Getting the correct wall-thickness ring matters — the wrong one either won't seat or will crush the wall.

    Motorhome side windows are more often screw-mounted through a flange and sealed with butyl tape. When ordering, you need the rough opening size, the wall thickness, and whether the corners are radiused or square.

    Leaks: reseal before you replace

    A window that leaks usually has failed butyl tape, not failed glass. Butyl hardens and shrinks over roughly a decade, opening a path at the top corners where water tracks in and runs down inside the wall.

    A reseal — removing the window, scraping old butyl, laying fresh tape, and reinstalling with new lap sealant — runs $100 to $250 per window and solves most leaks. Replace only when the frame is corroded, the glass is broken, or the wall behind it has soft spots indicating rot.

    RV window replacement across the United States and Canada

    Coverage is mobile-first almost everywhere: the installer brings the glass, the urethane and the stands to your site. Pick your state, province or metro for local pricing, lead times and the shops that actually carry coach glass in that market.

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    Frequently Asked Questions

    How much does RV window replacement cost?

    Roughly $150 to $900 per window installed. Single-pane fixed windows are cheapest, dual-pane insulated windows are the most expensive, and emergency exit windows fall in the middle at $300–$700 because of their egress hardware.

    Can a fogged RV window be fixed without replacing it?

    Yes. A glass shop can separate the panes, clean the interior surfaces, and rebuild the perimeter seal for $150–$300 — about half the cost of a new sash. The tradeoff is downtime, since the sash typically ships out for one to two weeks.

    Can you replace an RV window with a different size?

    Only with structural modification. The rough opening is framed into the sidewall, so changing size means cutting and re-framing, then repairing the exterior skin and interior panel. Matching the existing rough opening is almost always the better route.

    What is an RV emergency exit window?

    A designated egress window with a red release latch, required by RV safety standards, that swings fully open for escape. Replacements must be exit-rated units — a standard window of the same dimensions is not a legal substitute.

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