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ECO Window Systems Bathroom Remodeling: The Los Angeles Owner’s Guide
ECO Window Systems bathroom remodeling in Los Angeles typically runs $10,620 to $33,040, and the work involves more than swapping fixtures – it means matching existing window openings, waterproofing around them, and rebuilding the wet-area surfaces so the room holds up to daily steam and splash. We stock and install the common trim, flashing, and sill components that pair with ECO Window Systems bathroom windows, and we can usually match your existing series within one trip to the home.
Most owners call us after noticing the paint or drywall below the bathroom window has begun to bubble, or after the sill feels soft under a hand after a shower. That’s the tell. The window itself may open and close fine, but the seal between the window frame and the shower wall or tub surround has failed, and moisture has been working its way into the wall cavity for months. By the time it shows on the interior surface, the fix usually involves removing the window trim, inspecting the rough opening, replacing any rotted framing, reinstalling the window with fresh flashing tape, and rebuilding the surround. It’s a remodeling job, not a caulk-and-paint touch-up.
Graham Stein, our owner, grew up in Silver Lake and has worked on homes across Los Angeles for going on two decades. He will tell you that bathroom window failures follow a pattern in this city: older stucco homes with original metal or wood windows, combined with steamy showers and no exhaust fan, cause the window frame to sweat and the surrounding drywall or plaster to wick moisture. We see it regularly in neighborhoods from Echo Park to Westchester.
Which ECO Window Systems Models This Applies To

ECO Window Systems manufactures vinyl and aluminum window lines in standard and custom sizes, and we work with the bathroom-appropriate series: horizontal sliders, casements, and fixed picture windows that the company sizes for smaller wall openings. The compatibility point that matters is the frame depth and the nail fin configuration, because bathroom walls in Los Angeles are often 2×4 construction with a stucco exterior, which limits how deep a replacement frame can sit in the wall.
To identify your window, look for the manufacturer label on the inside edge of the frame or on the top sash – it will list the series name and a size code like 3030 or 2436. If the label is gone, we measure the rough opening and the frame thickness. That measurement, not the glass size, determines what we install. On the OEM versus aftermarket question: for the window itself, we recommend ECO Window Systems frames when the opening size is still a current production size, because the nail fin and weep-hole pattern matches the original installation. For the interior trim, sill, and flashing, we use Schluter Kerdi products around the wet areas and standard primed wood or PVC trim, which are better bathroom materials than the original painted wood. The aftermarket pieces are not the weak point – the original seal was.
Styles & brands we work with







Signs Your ECO Window Systems Bathroom Remodeling Is Failing
- Swollen or bubbling paint below the window. Water is running down the interior wall from a failed seal between the window frame and the tile backer or drywall. The moisture is trapped behind the paint, which lifts first.
- A soft sill or baseboard that feels spongy when pressed. This means the wood substrate has begun to rot. The sill is often the first piece to go because condensation collects there during every shower.
- Mildew or dark staining along the window’s lower corners. This is the visual record of recurring condensation. It usually means venting is inadequate and the window itself is acting as the exhaust surface – the moisture is condensing on the frame and dripping into the wall.
- Caulk that has pulled away from the tile or tub surround around the window. Caulk fails first in the steam-and-cool cycle of a bathroom. Once it lifts, water gets behind the surround and travels down toward the floor plate.
- The window sticks when opening after a shower, then frees up later. The frame is swelling with absorbed moisture. That cycle of swell-and-shrink eventually loosens the frame in the wall and widens the gap around the rough opening.
See the difference
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After
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After
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AfterReplacement Cost & What’s Included

A full ECO Window Systems bathroom remodeling job in Los Angeles falls between $10,620 and $33,040, with the variance driven by whether we are replacing the window itself, rebuilding rotted framing, and how much of the shower or tub surround has to be removed to reach the failure. A smaller bathroom where only the window and immediate surround need work lands at the lower end; a larger bathroom where the waterproofing has to be redone wall-to-wall lands higher.
The written price we give you before any work starts includes the window if it needs replacing, the flashing and waterproofing materials, the tile or surround rebuild, the labor, the drop cloths, and the shoe covers. It also includes a photo of the clean-up before the crew leaves. We do not work from estimates that grow once the wall is open. If the rot is deeper than expected, we tell you what we found and what the additional work costs before we proceed – not after. The 365-Day Done Right Promise covers the completed job. If something is not right after we leave, we make it right.
You will also want to know the related project ranges if the remodel expands: a small bathroom remodel runs $5,900 to $14,160, a walk-in shower installation runs $5,310 to $14,160, and a tub-to-shower conversion runs $4,130 to $11,800.
DIY or Call Us?
You can safely check the caulk line around your window, run the exhaust fan during a shower, and note whether condensation forms on the glass. That information helps us diagnose the problem before we open the wall. What you should not do is remove the window or the surrounding tile to inspect the framing yourself. The moment you pull the window, the waterproof envelope of your house is open, and a Los Angeles morning fog or an afternoon marine layer can push moisture into the wall cavity before you have the new flashing in place. The same goes for cutting into a tiled shower wall – the backer board behind it is load-bearing in some installations, and a wrong cut through a stud or a plumbing line turns a window repair into a much larger job.
If you are seeing any of the signs above, the practical move is to call (949) 850-9896 and have us look at it. We’ll tell you what we find, what it costs, and what the window needs – before anything is opened.
FAQs

An ECO Window Systems bathroom window frame typically lasts 15 to 25 years in Los Angeles, but the seal between the window and the shower surround often fails in 8 to 12 years if the bathroom lacks proper exhaust ventilation. The frame can be fine while the surrounding wall is not. Call (949) 850-9896 and we will take a look before you spend on a full remodel you may not need.
Yes, if the rot is confined to the sill and the lower trim, we can often repair the opening without rebuilding the whole shower. The answer depends on what we find behind the tile – and we will show you exactly what we see before recommending the scope of work. Call (949) 850-9896 for an honest assessment.
Most ECO Window Systems bathroom window remodels in Los Angeles take 4 to 8 working days, depending on whether we are replacing the window, the surround, or both. Longer if framing has to be rebuilt. We give you the schedule in writing before work starts.
We stock the common flashing tapes, sill pans, sealants, and PVC trims that pair with ECO Window Systems bathroom windows, and we order the window itself to your measured rough opening. We also keep parts for KraftMaid cabinetry, Cambria quartz, and Silestone surfaces in the shop when a bathroom remodel expands into a vanity or top replacement. Call (949) 850-9896 for availability and a free estimate.
Written by Graham Stein, Owner, Elmstead Remodeling at Elmstead Remodeling, serving Los Angeles and nearby areas.


