Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
ES Windows Roofing: The Irvine Owner’s Guide
We stock and install roofing components compatible with ES Windows systems in Irvine, with typical repairs running $400-$1,800 and full replacements $8,000-$20,000 depending on the assembly. Most ES Windows roofing calls we get in Irvine are same-day assessments, and we carry common flashing, membrane, and drainage parts on our trucks. Homeowners usually discover the failure after a Santa Ana wind event or the first hard rain of fall, when water shows up at the window-to-roof junction or the weep screed clogs and backs up into the wall cavity.
Which ES Windows Models This Applies To
ES Windows produces several product lines that integrate with roofing assemblies, primarily their hurricane-impact window systems and commercial-grade storefront lines. The critical identifier is the manufacturing label stamped on the frame edge or sill, which carries a six-digit model prefix and a date code. For roofing compatibility, we look at whether your ES Windows unit uses a nail-fin mount (residential) or a sub-frame with cap flashing (commercial). The nail-fin units common in Irvine’s Orchard Hills and Portola Springs developments require a specific drip-edge profile, 1.5 inches minimum, to keep water from wicking behind the fin. The commercial sub-frame units need a two-stage membrane overlap that most generic roofers skip.
On OEM versus aftermarket: ES Windows does not manufacture roofing components directly. They specify compatible flashing and membrane products from partners like Carlisle or Tremco. We source those exact spec sheets, or we use aftermarket equivalents that meet the same ASTM D1970 and AAMA 711 standards. The aftermarket route saves 15-25 percent on material cost without voiding the window warranty, provided the product is documented. We write that documentation into every quote.
Signs Your ES Windows Roofing Is Failing

- Water staining at the interior head casing. This usually means the head flashing above the window has separated from the roofing membrane, or the counter-flashing was never properly integrated. In Irvine’s dry summers, the gap can stay hidden until a driven rain finds it.
- Peeling paint or efflorescence on the exterior sill. The weep screed, the perforated strip at the bottom of the stucco assembly, is clogged with debris or was installed without proper back-venting. Water exits through the path of least resistance, which becomes your wall.
- Soft or spongy drywall near the window corners. The end dams on the sill pan have failed, or the pan itself was never sealed to the rough opening. ES Windows units are heavy; if the pan flexes, the sealant joint opens.
- Visible rust on the nail fin or sub-frame. The roofing underlayment has deteriorated above the window, or the head flashing was short-circuited by a later roof repair. Coastal Irvine air accelerates this once the barrier is compromised.
- Window operation gets stiff or the sash binds. Water intrusion has swollen the frame or the structural opening has shifted due to rot in the sill plate. This is past the flashing stage and into framing repair territory.
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AfterReplacement Cost & What’s Included
| Scope | Price Range in Irvine | What Drives It |
|---|---|---|
| Flashing repair, localized | $400-$900 | Accessibility, stucco cutback required, membrane type |
| Sill pan / weep screed replacement | $600-$1,400 | Wall depth, stucco match, whether framing is sound |
| Full window-to-roof assembly rebuild | $1,200-$1,800 | Number of units, scaffolding, HOA notification |
| Complete roof replacement (ES Windows integrated) | $8,000-$20,000 | Square footage, pitch, underlayment spec, tile vs. composite |
Every quote is flat and written before work starts. Under Clause 1 of the Haven Standard, that number includes parts, labor, disposal, and the documented photo record. If we open the wall and find rot, work stops until we present a signed change order with the exact additional cost. No surprises. The 365-Day Done Right Promise covers the installation and the materials we specify.
DIY or Call Us?

There’s a short list of checks an owner can do safely: clear weep screed debris with a soft brush, verify downspout discharge isn’t backing up against the wall, and look for obvious gaps in sealant from the ground with binoculars. Beyond that, ES Windows roofing integration involves working at height, cutting stucco or siding, and disturbing waterproofing layers that protect your wall cavity. One misstep and you’re not looking at a $400 flashing repair, you’re looking at $3,000 in mold remediation and structural drying. We’re insured and bonded for this work, and our crews are trained in the specific ES Windows details. Call (657) 227-2502 and we’ll schedule the assessment. The estimate is free, and you’ll get the written price before anyone picks up a tool.
FAQs
Quality flashing and membrane at the window-to-roof junction should last 20-30 years in Irvine’s climate, but the intense UV exposure and Santa Ana wind cycles can shorten that to 12-15 years if the original installation used standard rather than high-temp underlayment. Call (657) 227-2502 for an exact assessment of your assembly’s condition - estimates are free.
Localized separation can sometimes be re-secured and re-sealed if the metal is sound and the membrane beneath is intact. If there’s corrosion, pinholing, or any rot in the substrate, partial repair is a false economy. We’ll show you the photo record and tell you which category you’re in. Call (657) 227-2502 to schedule.
Most localized repairs are one day; a full assembly rebuild on multiple units is typically two to three days, plus stucco or siding cure time if exterior finishes are disturbed. We build that timeline into the written scope so you know before we start. Call (657) 227-2502 for a specific schedule.
We carry common flashing profiles, peel-and-stick membrane, and sealants that match ES Windows specifications on our trucks. Specialty sub-frame components or custom cap-flashing for older commercial lines we order with a 2-3 day lead time, and we track that delivery so work starts when promised. Call (657) 227-2502 to confirm availability for your model.
Rowan Construction Group Irvine is an independent service provider and is not affiliated with ES Windows. We source compatible components based on published specifications and field-verified measurements.
Written by Grant Rowan, Owner, Rowan Construction Group Irvine at Rowan Construction Group Irvine, serving Irvine and nearby areas.







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