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ES Windows Bathroom Remodeling: The San Francisco Owner’s Guide
If you have a bathroom window from ES Windows and it’s fogged, leaking, or the frame has started to pull away from the tile, we replace and re-flash it as part of a full bathroom remodel in San Francisco, with most projects running $10,620 – $33,040 depending on scope. We install the window, waterproof the opening to Schluter specs, and rebuild the surround so water stays on the right side of the glass. What homeowners in San Francisco usually notice first is condensation between the panes that won’t clear, or a soft spot in the drywall under the window after a wet winter.

Quick answer: yes, we work on ES Windows in bathroom settings, the installed replacement window plus surrounding waterproofing typically lands between $1,200 and $4,800 of the total remodel budget, and we can usually get the new unit ordered within a few days through our supply partners. The bigger question is whether the window alone failed, or whether the original flashing and waterproofing behind the tile was the problem. In San Francisco’s fog and rain, it’s usually both.
Which ES Windows Models This Applies To

ES Windows builds custom aluminum-framed units, and over the years we’ve seen their single-hung, horizontal slider, and fixed picture units in bathrooms across San Francisco from the Sunset District to Noe Valley. The bathroom lines tend to be narrower than their living-room counterparts, often 24 to 36 inches wide, and many San Francisco homes have an obscure-glass or frosted option that is worth keeping in the replacement. When we open up the wall, the original window label is sometimes legible on the top edge of the frame, but more often we match by measuring the rough opening and the visible glass dimensions.
Here is the compatibility gotcha every San Francisco homeowner should know: ES Windows are made to order, so a stock Andersen or Milgard unit will rarely match the existing opening without modifying the framing or adding a filler strip. We order the replacement to the same measurements and the same frame profile so the tile line does not have to move. On the OEM-versus-aftermarket question, we use the original ES Windows product line when the opening and lead time allow, and a quality aluminum-framed equivalent with matching sightlines when a faster turnaround matters. Both carry manufacturer warranties you can verify by name before we order.
Styles & brands we work with







Signs Your ES Windows Bathroom Remodeling Is Failing
- Condensation or fog between the panes that never clears. The insulating gas seal has failed. In San Francisco’s marine air, the seal usually goes long before the frame shows any sign of trouble, and the only real fix is a new sealed unit.
- Soft drywall, peeling paint, or mildew below the window. Water is getting behind the tile or the window flange. Most original bathroom window openings in San Francisco homes were flashed with building paper, not a modern waterproofing membrane, and that detail fails after years of shower steam and rain.
- The window is hard to open or lock. Aluminum frames in San Francisco’s salt-fog air corrode at the hardware points. You can clean and lube the track, but if the lock is pitted or the roller is seized, the part needs replacing rather than adjusting.
- You hear wind or street noise through a closed window. The weatherstripping or the frame seal has compressed or pulled away. In a bathroom, that gap also lets humid air into the wall cavity every time someone showers.
- Visible cracks at the tile joints around the window. The wall has been moving, or water has swelled the backer board behind the tile. By the time the cracks show, the waterproofing layer behind them is usually compromised.
See the difference
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After
Before
After
Before
AfterReplacement Cost & What’s Included
For a bathroom window replacement tied into a remodel in San Francisco, you’re looking at roughly $1,200 to $4,800 for the window unit, demolition, waterproofing, installation, and tile patching around the new frame, depending on the size of the unit and what we find behind the wall. A straight window swap where the surrounding tile is intact will sit at the lower end. A full bathroom remodel that includes the ES Windows replacement, a new walk-in shower, vanity, and flooring runs $10,620 – $33,040.
Every one of those numbers is a written price you’ll see before any work starts. What drives the range is not mystery, it is specifics: the size of the opening, whether the framing needs repair once the old window comes out, and whether the original waterproofing needs to be rebuilt to current code. We name the parts, we name the labor, and the price does not change once the crew arrives unless you ask to add something mid-project.

DIY or Call Us?
A homeowner can safely do a few things before calling: check for visible seal gaps, remove mineral buildup from the track with white vinegar, and look for water staining around the interior casing. What we would not recommend is pulling the window out of a tiled bathroom wall as a do-it-yourself project. A window replacement inside a shower or tub surround is not like a living-room swap. There is waterproofing behind the tile that must lap over the window flange in a specific order, and if that detail is wrong, water gets into the wall cavity and the first sign may be a soft spot in the floor below, months later.
That is the work our crews do with the wall open and the Schluter membrane detailed in the right sequence. If you want a second set of eyes before deciding, call (831) 480-4497 and describe what the window is doing. We’ll tell you honestly whether the unit needs replacing or whether something simpler will buy you time.
FAQs

Sealed units in San Francisco bathrooms typically last 15 to 25 years before the seal fails or the hardware corrodes, and the marine air on the west side of the city tends to shorten that toward the lower end. The frame itself often survives longer than the glass seal, which is why a targeted glass unit replacement can make sense. Call (831) 480-4497 and we can tell you whether your window is a candidate for that repair before pricing a full replacement.
A fogged unit can sometimes be replaced with a new sealed glass pack while keeping the original ES Windows frame, but in a bathroom we usually find the surrounding waterproofing also needs addressing, which pushes the work toward full replacement. We’ll tell you which route applies to your opening after the wall is opened and we can see the original flashing. Estimates are free, and the written price you get before the work starts is the price you pay.
A standard ES Windows bathroom replacement takes one to two days once the new unit arrives, including removal, waterproofing, installation, and tile patching. If the remodel includes a full shower rebuild, the window work happens early in the project sequence so the new waterproofing can tie in cleanly. We schedule around your family’s quiet hours and set those before the crew starts.
ES Windows are made to order, so we measure, order the specific unit to match your opening, and install once it arrives, usually within one to two weeks depending on the factory lead time. We also handle bathrooms with KraftMaid vanities, Cambria or Silestone countertops, and plumbing fixtures from Kohler, Moen, and Grohe, so the window is one part of the full room plan. Call (831) 480-4497 for a free estimate.
Written by Graham Stein, Owner, Elmstead Remodeling San Francisco at Elmstead Remodeling San Francisco, serving San Francisco and nearby areas.


