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ECO Window Systems Roofing: The San Antonio Owner’s Guide
We stock and install ECO Window Systems-compatible roofing components across San Antonio, with most replacement jobs running $400 to $1,800 installed depending on the panel, flashing, or seal assembly your system needs. If you have an ECO Window Systems roof window, skylight, or integrated flashing kit that’s leaking or binding, we can usually match the part and complete the swap in a single visit.
Most San Antonio homeowners discover a failed part the same way: a water stain on the ceiling after a hard Hill Country storm, or a window that suddenly won’t crank closed. ECO Window Systems builds tight, well-sealed units, but the Texas sun is relentless on gaskets and sealant. When the rubber dries out or the flashing separates at the curb, the part fails quietly until rain finds it. By the time you see the stain, the component has usually been compromised for weeks.
What Exactly Is ECO Window Systems Roofing?
ECO Window Systems is a manufacturer of roof windows, skylights, and the integrated flashing kits that seal them to the roof deck. When we talk about “ECO Window Systems roofing” in San Antonio, we’re almost always talking about one of three parts: the flashing kit that surrounds the window curb, the operating hardware and sash assembly on venting units, or the insulated glass unit (IGU) inside the frame.
These aren’t shingles. ECO Window Systems components integrate with your existing roof covering, whether that’s asphalt shingle, tile, or metal. A failed flashing kit will let water run straight down into your attic even when the window itself looks fine from inside. That’s the part we replace most often after San Antonio’s summer thunderstorm season.
Styles & brands we work with
Signs Your ECO Window Systems Roofing Is Failing
- Water staining on interior drywall or window trim. This is almost always flashing failure at the roof curb, not a problem with the glass. The seal between the flashing and the roof deck breaks down after years of thermal expansion, and water follows the path of least resistance straight down.
- Condensation or fogging between the glass panes. The IGU seal has failed. In San Antonio’s humidity swings, a compromised seal shows up as persistent interior fog that you can’t wipe off either side. The glass unit needs replacement, not just cleaning.
- The crank mechanism binds, skips, or won’t hold the window open. ECO Window Systems venting units rely on a gear-and-arm assembly that wears over time. We see stripped gears most often on south-facing windows where the operator gets heavy daily use and thermal load.
- Visible cracking or separation in the exterior flashing. Walk around your roofline with binoculars after a storm. If the flashing has pulled away from the shingles or the curb shows exposed sealant, water is already finding its way in, even if you haven’t spotted the damage inside yet.
- Drafts or temperature swings around the window. The perimeter gasketing has compressed or dried out. This is more common on older ECO Window Systems units that predate the current multi-point compression seal design.
Which ECO Window Systems Models This Applies To
ECO Window Systems manufactures across three primary categories: fixed skylights, manually vented roof windows, and electric venting units. Each uses a different flashing profile. The fixed skylight flashing is a simple curb-mount kit; the venting units use a taller curb with an integrated step flashing profile that ties into your roof covering differently.
The key compatibility gotcha: ECO Window Systems changed their flashing profile dimensions around the 2015 model year. A pre-change window won’t accept a current-generation flashing kit without a curb adapter, and the adapter isn’t a stock item at most supply houses in San Antonio. We carry both profiles on the truck. If you can get us the serial number from the inside of the frame, or just a photo of the existing flashing from the roof, we’ll know which generation you have before we even pull up.
OEM versus aftermarket matters here. Aftermarket flashing kits exist for the fixed skylight line, and some are decent, but the venting units really want the factory flashing. The curb height and hinge geometry don’t forgive generic substitutions. For glass units, quality aftermarket IGUs with the correct low-E coating and argon fill perform essentially identically to factory glass at a better price. We’ll quote both honestly.
See the difference
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AfterReplacement Cost & What’s Included
In San Antonio, you’re looking at $400 to $1,800 installed for most ECO Window Systems roofing repairs and replacements. The spread depends on what actually failed:
- Flashing kit replacement: $600 to $1,200 installed, including new sealant, re-securing the curb, and re-tying into existing shingles or tile.
- Glass unit (IGU) replacement: $450 to $900 installed, depending on size and coating spec.
- Operator or crank assembly replacement: $400 to $700 installed, including re-aligning the sash and lubricating the hinge points.
- Full roof window replacement: $1,200 to $1,800 installed when the existing curb is sound and we can drop a new unit in without re-framing the opening.
Every quote includes the part, the labor, all sealant and fasteners, and cleanup. You get a written line-item price before we touch anything. And every repair is covered by a written guarantee for a full year from completion. If something isn’t right within 365 days, we come back and make it right at no cost to you.
DIY or Call Us?
You can safely check a few things from inside: look for condensation between panes, test the crank, and note where water stains appear on the ceiling. Those observations help us quote accurately over the phone. What we’d caution against is getting on your San Antonio roof to inspect the flashing yourself. Steep pitches, tile that breaks when you kneel on it, and July heat that turns shingles slick are all genuinely dangerous. Roof work is the one place where even experienced builders bring in a second set of eyes.
Replacing flashing or a glass unit from the roof side is absolutely not a DIY job. A bad re-seal creates a leak you won’t find until the next storm, and the interior damage will cost far more than the repair would have. Call (254) 269-5071 and we’ll come look at it properly. You’ll get a written price before any work starts, and you’ll know exactly who’s coming to your door and what the job costs before the ladder goes up.
How We Work, From the First Call to the Finished Job
Isaac Pruett has been running construction and remodeling jobs across the Southwest for two decades, and in San Antonio long enough to know which roof valleys catch wind-driven rain and which flashing profiles fail first in Hill Country heat. When you call (254) 269-5071, a live person answers. You tell us what you’re seeing, we ask the right questions, and we schedule a visit.
Before our technician arrives, you get their name and photo sent to you. They’ll show up in a clean marked uniform with a photo ID badge at your door. That’s The Threshold Standard: every crew member is background-checked and identity-verified. You’ll never open your door to a stranger and wonder who’s on the other side.
We stock ECO Window Systems-compatible flashing for both pre-2015 and current-generation units, plus replacement operators, glass units, and gasketing on the truck. We also carry parts for other major brands including KraftMaid, Cambria, and Silestone. Mason Remodeling Co San Antonio is an independent service provider; we’re not affiliated with ECO Window Systems, but we work on their products every week and we know them cold.
Know who’s coming, know what it costs, know it’s covered, that’s the whole job before the job starts.
FAQs
How long does an ECO Window Systems roof window last in San Antonio? The frame and curb itself will often go 20 to 25 years here, but the gasketing and sealant typically need refreshing every 8 to 12 years because San Antonio’s UV exposure and temperature swings accelerate rubber breakdown. The glass unit usually fails before the frame does, so expect one IGU replacement during the window’s service life.
Can a flashing leak be repaired without replacing the whole flashing kit? Sometimes, if the leak is caught early and the flashing itself is intact, a re-seal and re-fasten will buy you a few more years. But if the flashing has pulled away from the curb or the metal has corroded at the seams, a full flashing replacement is the only fix that’ll hold. Call (254) 269-5071 and we’ll give you an honest assessment, either way, the estimate is free.
How long does a flashing or glass replacement take? Most single-unit repairs finish in two to four hours on site. A full roof window replacement with everything already on the truck is typically a half-day job. We’ll tell you the expected timeframe when we quote, and we stick to it. Call (254) 269-5071 to schedule your free estimate.
Do you stock ECO Window Systems parts, or do I have to wait for shipping? We stock the most common flashing profiles for both pre-2015 and current-generation ECO Window Systems units on the truck, along with replacement operators, glass units in standard sizes, and gasketing. Non-standard glass sizes or specialized electric venting components may take one to two weeks to source. We’ll tell you upfront what’s on the truck and what has to be ordered. Call (254) 269-5071 for an exact quote, estimates are always free.
If your ECO Window Systems roof window is leaking, fogging, or refusing to close, call (254) 269-5071 to schedule a free estimate with Mason Remodeling Co San Antonio. You’ll know who’s coming, what it costs, and that the work is covered before we ever set up a ladder.
Written by Isaac Pruett, Owner, Mason Remodeling Co San Antonio at Mason Remodeling Co San Antonio, serving San Antonio and nearby areas.
