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ES Windows Bathroom Remodeling: The Riverside Owner’s Guide
If you have ES Windows in a bathroom that’s showing its age, the glass itself is rarely the only thing that needs attention. In Riverside, a full bathroom remodel that works around existing ES Windows or includes replacing them typically runs $9,000 – $28,000, depending on what’s behind the walls and how much of the opening needs reframing. We’re an independent remodeling contractor, not affiliated with ES Windows, but we work around their products constantly. The most common call starts the same way: water staining on the drywall beneath the window, a frame that’s soft to the touch, or glass that fogs between the panes no matter how much you clean it.
Which ES Windows Models This Applies To
ES Windows makes a few different series that end up in bathrooms, and the compatibility issue owners run into is this: the window opening in an older Riverside home isn’t always a stock size anymore. Homes in the Arlington and Magnolia Center neighborhoods especially tend to have stucco exteriors with window openings that were framed to whatever the builder had on the truck in 1962. That means a true drop-in replacement is rare, and the job usually involves some reframing, waterproofing, and finish work inside and out.
The label matters. Look for the manufacturer sticker on the edge of the sash or the frame, usually on the hinge side or along the bottom rail. ES Windows stamps a model code and a manufacturing date there, and that code tells you the glass pack specs, the series, and whether it was made for a retrofit or new-construction opening. If the sticker’s gone, we measure the visible glass and then verify the rough opening from inside the wall, because those two numbers can be an inch apart. For most ES Windows bathroom jobs, we recommend OEM glass packs when they’re still available, because the low-E coatings and argon fill are matched to the frame’s drainage design. That said, a quality aftermarket insulated glass unit made to the same thickness works fine in non-awning, non-casement applications, and it usually saves 20 – 30% on the glass portion of the job.
Styles & brands we work with
Signs Your ES Windows Bathroom Remodeling Is Failing
Bathroom windows fail differently than windows anywhere else in the house. Steam, soap, hard water, and constant humidity swings stress the seals and frames in ways a living room window never sees. Here’s what we usually find, in the order homeowners first notice it:
- Fog or condensation between the panes. This means the insulated glass unit’s seal has failed and the desiccant inside the spacer bar is saturated. You can’t wipe it away, because it’s inside the sealed unit. The fix is a new glass pack, not a new window, unless the frame shows problems too.
- Soft spots or staining on the drywall under the window. This is a waterproofing failure, not a glass failure. In Riverside bathrooms with older ES Windows, the original flashing or sealant at the sill allows water to wick into the wall cavity. By the time you see the stain, the framing behind it is usually wet, and that’s a remodel issue, not a repair patch.
- White mineral crust on the frame or sill. This is efflorescence, which means water is moving through the cementitious material behind the tile or stucco. The window itself may be fine, but the wall needs to be opened and dried before you rebuild.
- The sash no longer closes flush, or you feel air moving around the edges. Frames can shift slightly with temperature and humidity swings, especially in stucco homes in Riverside where the afternoon sun hits one wall hard. If the frame is out of square, rehanging the sash won’t fix it; the opening needs to be addressed from inside.
- Black or green growth on the tile grout near the window. That’s moisture living in the substrate (the moisture-resistant layer behind the tile), which means the window’s drainage path is sending water backward into the wall instead of outside. We see this on bathroom windows that were caulked shut by a previous owner or a flipper.
See the difference
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After
Before
After
Before
AfterReplacement Cost & What’s Included
Here’s what an ES Windows bathroom remodel costs in Riverside, honestly:
- Window replacement only, opening is square and dry: $1,200 – $3,800 installed, including new glass, trim, and exterior sealing.
- Window replace with minor framing repair and waterproofing: $4,000 – $8,500, which includes opening the wall around the window, repairing the framing, new waterproof membrane, and refinishing both sides.
- Full bathroom remodel with new ES Windows or reframed opening: $9,000 – $28,000, depending on whether the shower is replaced, what tile you choose, and how far the water damage extends.
What drives the number: how much of the rough opening is still sound, whether we’re pulling the tub or shower to address the waterproofing, and what finish materials you choose. Every job gets a written price before work starts, and the number on the contract is the number on the invoice. If we open the wall and find the framing is worse than expected, we stop, show you what we found, and give you a revised written number before we buy so much as a 2×4.
DIY or Call Us?
You can safely check a few things: is the sealant bead around the exterior frame cracked or pulling away? Is the weep hole at the bottom of the exterior frame clear? Is the interior drywall soft to a light press? That’s about it. Cutting glass, pulling a window frame out of a stucco wall, or redoing waterproofing around a shower window is not a weekend job. The moment you peel back drywall around a leaking window and find a stud that’s turned to sponge, you need a remodeler, not a caulk gun. Also worth being honest about: the glass in these units is tempered for code, and a wrong cut is a safety issue, not just a waste of money. Call (341) 895-1170 if you’re seeing any of the signs above; we’ll come look and give you a number before we pick up a tool.
FAQs
Expect 15 – 25 years from the insulated glass in a bathroom, but Riverside’s hot, dry summers and the hard water in the local supply mean the frame and seals often start to show their age at 12 – 15 years. A bathroom window that gets direct afternoon sun will fail its seal faster than a shaded one.
A failed seal in the glass pack can’t be repaired, but the glass pack itself can often be replaced without changing the whole frame, which is the cheapest good fix. If the frame or the waterproofing around the opening is the problem, repair work is still possible, but it looks more like a partial remodel than a parts swap.
A window-only replacement takes a day. A window replacement with framing and waterproofing repair takes two to three days. A full bathroom remodel that includes the window, shower, and finishes runs two to four weeks in most Riverside homes, and we’ll give you a written schedule before work starts.
We stock the materials needed for the remodel: insulated glass units ordered to the measurements we take during the estimate, waterproofing membrane, backer rod, sealant, flashing and framing materials. We do not stock OEM ES Windows frames as a shelf item, because the frame series varies by installation. We also work with KraftMaid, Cambria, and Silestone products when the remodel includes cabinetry or countertops.
Written by Trevor Nash, Owner, Penhallow Remodeling Riverside at Penhallow Remodeling Riverside, serving Riverside and nearby areas.
