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ES Windows Roofing: The San Antonio Owner’s Guide
ES Windows roofing replacement in San Antonio typically runs $8,000 to $20,000 for a full roof, while targeted repair work around ES Windows skylights, flashing, and integrated roof components falls between $400 and $1,800. We stock ES Windows-compatible flashing, sealant systems, and replacement glazing on our trucks, so most repair calls are resolved in a single visit. Homeowners usually discover a problem the same way: a water stain on the ceiling after a heavy Texas thunderstorm, or daylight visible at the seam where the ES Windows unit meets the roofline.
This page covers the specific failure points on ES Windows roof integrations in San Antonio, what replacement actually costs, and how to tell whether you need a repair or a full re-roof. No generic advice here, just what we see on actual homes in Alamo Heights, Stone Oak, and the King William Historic District.
Which ES Windows Models This Applies To
ES Windows manufactures roof-integrated glazing across several product lines, and the compatibility question matters more than most homeowners expect. The ES VistaLine and ES SkyLine series are the two most common we encounter on San Antonio homes, and they use different flashing profiles. A VistaLine curb-mount skylight sits on a raised wood curb, while a SkyLine deck-mount unit seals directly to the roof deck. The flashing kits are not interchangeable, and mixing them is the single most common cause of repeat leaks we get called out to fix.
To identify your unit, look at the metal tag riveted to the inside frame. It will show the model number, the glass spec, and a manufacturing date code. If the tag has faded, measure the rough opening from inside the house; VistaLine units run in 2-foot increments starting at 24″ x 24″, while SkyLine units are typically custom-cut to the opening. For owners deciding between OEM ES Windows parts and quality aftermarket equivalents: the glazing itself is standard low-E insulated glass available from several Texas glass suppliers at roughly 60 to 70 percent of OEM cost. The flashing and curb kits, though, are worth buying as genuine ES Windows parts, because the profile geometry is specific to each series and aftermarket flashing rarely matches the drainage channels exactly.
Elmstead Remodeling San Antonio is an independent contractor and not affiliated with ES Windows. We install and service their products because they are common on higher-end San Antonio homes, but we also work with skylight and roof-window parts from other manufacturers, including the same named brands we trust on interiors: KraftMaid for cabinetry, Cambria and Silestone for stone surfaces.
Styles & brands we work with
Signs Your ES Windows Roofing Is Failing
- Water staining on the ceiling below the unit. This usually means the flashing seal has separated from the roof deck, often after San Antonio’s freeze-thaw cycles in winter and repeated 100-degree expansion days in summer. The stain appears before the leak is visible as dripping, because water travels along the roof sheathing first.
- Condensation between the glass panes. The insulated glass seal has failed. This does not mean water is entering your house, but the unit has lost its thermal performance, and the fog will not clear on its own. Replacement glazing is the fix.
- Visible daylight at the curb seam. If you can see light between the ES Windows frame and the roof curb from inside the attic, the curb flashing has shifted or rotted. This is the point where a repair call today prevents a ceiling replacement next spring.
- Soft spots on the roof deck around the unit. Press gently on the roof sheathing within two feet of the skylight or roof window. If it flexes or feels spongy, water has been getting in long enough to rot the wood, and the repair scope now includes decking replacement, not just re-flashing.
- Cracked or chipped exterior glazing on the roof surface. Hail and storm debris are common in San Antonio, and a cracked outer pane on a roof-mounted ES Windows unit is a water entry point waiting for the next storm. The crack may not leak today, but the next heat cycle will open it further.
See the difference
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AfterReplacement Cost & What’s Included
A written price before any work starts is how every Elmstead Remodeling San Antonio job begins, including ES Windows parts replacement. For repair work around an existing unit, San Antonio homeowners should expect $400 to $1,800, covering new flashing, sealant, and any minor decking patch. Full roof replacement with ES Windows units being re-integrated lands between $8,000 and $20,000 depending on roof size, pitch, and the number of glazed openings. Metal roof systems that include ES Windows-compatible curbs run $15,000 to $40,000.
What drives the range: the condition of the roof deck under the flashing, whether the unit is curb-mounted or deck-mounted, and whether we are matching existing glazing or replacing the full unit. Every quote is line-itemed so you see the part cost, the labor, and the disposal fee separately. The 365-Day Done Right Promise covers the work, so if a flashing repair leaks again within a year, we make it right at no charge. Call (432) 233-0976 for a free estimate, and you will have a written price before a single tool leaves the truck.
DIY or Call Us?
What a careful owner can safely do: check the interior frame label for the model number, look for condensation between panes, and do a visual check of the roof surface from a ladder, not from on the roof. Re-caulking a visible interior seam with a quality silicone is also reasonable as a temporary stopgap.
What should not be DIY: any work that requires walking the roof, lifting the ES Windows unit, removing flashing, or replacing glazing. Roof work on a San Antonio summer afternoon is dangerous, the glazing on these units is heavy, and an improperly sealed curb leaks inside the wall cavity where you will not see it until the damage is extensive. A wrong sealant choice or an unseated flashing channel turns a $400 repair into a $4,000 decking replacement. If you are not certain, call (432) 233-0976. We will tell you honestly whether it is a job for us or something you can handle yourself.
FAQs
ES Windows glazing units typically last 15 to 25 years in San Antonio’s heat and hail exposure, but the flashing and sealant around them usually need attention every 8 to 12 years. The Texas sun breaks down sealant faster than the manufacturer’s national averages suggest, which is why we recommend an annual visual check of the curb seal. Call (432) 233-0976 if you want us to take a look during our next trip to your area.
Yes, in most cases the flashing and sealant around an ES Windows unit can be replaced without touching the glazing itself, which keeps the cost in the $400 to $1,800 range. The exceptions are when the roof deck under the flashing shows rot or when the unit’s own frame has warped. We will show you what we find before recommending any work.
Flashing and sealant replacement around a single ES Windows unit is a one-day job for our crew. Full roof replacement with multiple units takes three to seven working days depending on roof size and weather. We schedule around your family’s routine, keep quiet tools running during rest hours where possible, and leave drop cloths and shoe covers in place until the last piece of debris is cleared.
We stock flashing kits, sealant systems, and replacement glazing for the most common ES Windows VistaLine and SkyLine series on our trucks, so most San Antonio repair calls are completed same-visit. Custom-size glazing and rarely ordered curb profiles may take five to ten business days from our Texas suppliers. We will tell you upfront which category your part falls into when you call (432) 233-0976.
Written by Graham Stein, Owner, Elmstead Remodeling San Antonio at Elmstead Remodeling San Antonio, serving San Antonio and nearby areas.
