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ECO Window Systems Driveway & Pavers: The San Antonio Owner’s Guide
If you have an ECO Window Systems product tied into your driveway or paver layout in San Antonio, you’re likely dealing with a failed sill pan, a cracked threshold connector, or a drainage channel that’s let water get where it shouldn’t. We stock ECO Window Systems-compatible driveway and paver transition parts at Mason Remodeling Co San Antonio, and typical installed pricing for these repairs in the San Antonio market runs $400 – $1,800 depending on how far the water has traveled and what’s underneath the pavers. Most owners discover the problem the same way: a soft spot near the window line, a paver that’s suddenly sitting proud of its neighbor, or a damp smell in the room right behind the window after a hard Hill Country rain.
Here’s the straight answer on what this page covers: which ECO Window Systems models these driveway and paver integrations apply to, what fails first in Texas heat and clay soil, what the repair costs in San Antonio right now, and whether you can safely handle the diagnosis yourself. We’re an independent service provider, not affiliated with ECO Window Systems, so the recommendations here come from years of seeing these failures in real San Antonio homes, not from a product brochure.
Which ECO Window Systems Models This Applies To
ECO Window Systems produces several series where the window frame sits low to the slab or where a paver patio or driveway was later installed up against the sill. The parts most likely to fail are the perimeter seal, the sill pan flashing, and the drainage weep covers. We see this on their casement and horizontal slider lines most often in San Antonio, particularly on homes built between 2005 and 2018 where the original flashing was never upgraded for paver contact.
To identify your part, look for a white or almond label on the inside of the window frame, usually on the hinge side or top rail. The label carries the series code, not just “ECO” – and that matters. A sill pan from their 5100 series will not seat correctly on a 4200 series frame, even though both are aluminum. The easiest check is to measure the depth of the frame pocket: 3-1/4 inches versus 4-1/8 inches tells us the series before we ever order a part. If you can’t find the label, snap a photo of the window from the exterior and text it to us before calling. That single image saves a second trip.
On OEM versus aftermarket: ECO Window Systems still supplies OEM sill pans and weep covers for most series, but lead times from the manufacturer run 2 – 3 weeks. Quality aftermarket equivalents from suppliers like Prime-Line are cheaper and in stock now, and for everything except the thermal break gasket, aftermarket holds up equally well in San Antonio’s heat. We’ll quote both so you decide with the lead time in front of you.
Styles & brands we work with
Signs Your ECO Window Systems Driveway & Pavers Is Failing
- Pavers lifting along the window line. Clay soil in San Antonio expands when wet and shrinks in drought. When the sill pan leaks, water pools under the first course of pavers and they ride up. You’ll see a ridge forming where the paver meets the window trim.
- White chalky residue on the exterior sill. This is efflorescence, mineral salt left behind when water migrates through the weep system and evaporates on the surface. It tells us the weep covers are clogged and water is backing up behind the frame.
- Damp drywall or baseboard directly under the window. By the time you see this, the sill pan has been leaking for months. The water traveled through the frame pocket, down the rough opening, and into the wall cavity. The window itself still looks fine from the outside.
- Driveway concrete spalling near the window corner. Constant irrigation runoff or a failed window seal saturates the concrete edge, and freeze-thaw cycles (yes, San Antonio gets them in January) pop the surface. The window is the source more often than people think.
- Caulk line cracked or pulled away where driveway meets sill. If the original installer used silicone against porous concrete, it fails within 2 – 3 San Antonio summers. The gap lets water run straight down into the foundation stem wall.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
Here’s what installed repair pricing looks like in San Antonio for ECO Window Systems driveway and paver transitions:
- Weep cover replacement and sill cleaning: $400 – $800
- Sill pan flashing replacement with paver removal and re-set: $800 – $1,400
- Full threshold rebuild including concrete spall repair and new drainage channel: $1,200 – $1,800
- Paver driveway re-grading where window runoff caused settlement: $7,000 – $18,000 (full driveway scope, not a window part)
What drives the spread is how deep the water damage goes. A weep cover swap is parts and an hour of labor. A sill pan replacement means pulling the bottom course of pavers, cutting back the old flashing, installing a proper pan with end dams, and re-bedding the pavers on fresh sand. We write the price before work starts, and that written price is the price you pay. Our work here is covered by a 365-Day Done Right Promise from the completion date: if the repair fails within a year, we return and make it right at no charge. That’s not a promotion. It’s in writing on every invoice.
DIY or Call Us?
There are exactly two things you can safely check yourself. First, clear any leaves or paver sand blocking the weep holes along the bottom of the frame. That fixes maybe a third of the “leaky window” calls we get. Second, if you see cracked caulk, note where it starts and stops so you can describe it to us. Do not attempt to pry up pavers, cut out old flashing, or reseal the sill pan on your own. ECO Window Systems frames sit under tension against the rough opening, and pulling the wrong paver can crack the frame pocket. At that point you’ve turned a $400 weep cover job into a full frame replacement.
If you see damp drywall, stop. That’s a water migration problem behind the wall, not a caulk problem. Call us at (254) 269-5071 and we’ll get eyes on it. We’ll tell you exactly who’s coming before we arrive, show a photo ID badge at the door, and put the price in writing before any tool comes off the truck.
FAQs
You can expect 8 – 12 years from the original sill pan and weep system before San Antonio’s heat, clay movement, and occasional hard freezes take their toll. If your home is older than that and the original flashing is still in place, you’re on borrowed time.
Weep covers can often be cleared and re-used. A corroded sill pan cannot be “patched” – aluminum flashing that has pitted through needs to come out. We’ll tell you honestly which category your part falls into after one look.
A weep cover replacement takes under two hours. A full sill pan replacement with paver removal and re-setting takes one full day for a single window, including curing time for the sealant. We schedule for a day with no rain in the forecast, which in San Antonio means we can usually get you in within a week.
We keep common weep covers, end dams, and flashing stock for ECO Window Systems 4200 and 5100 series in our San Antonio inventory. Specialty thermal break gaskets and series-specific sill pans are ordered same-day from our supplier, which means most parts arrive within 2 – 3 business days. Call (254) 269-5071 with your model number and we’ll confirm what’s in stock before you schedule anything.
If you have an ECO Window Systems window, door, or sill component that touches your driveway or paver line in San Antonio, call (254) 269-5071 for a free estimate. We’ll measure the frame, identify the exact part, and give you a written price before any work begins. Know who’s coming, know what it costs, know it’s covered – that’s the whole job before the job starts.
Written by Isaac Pruett, Owner, Mason Remodeling Co San Antonio at Mason Remodeling Co San Antonio, serving San Antonio and nearby areas.
