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Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
IKO Flashing Replacement: The Santa Clarita Owner’s Guide
IKO flashing replacement in Santa Clarita typically runs $280 to $640 installed per area, depending on which flashing has failed and how much of the surrounding shingle needs to be lifted to get to it. We stock IKO-compatible flashing on our trucks and can match the profile, gauge, and finish to your existing roof without waiting on a special order. Most flashing failures show up the same way: a brown water stain on the ceiling, a damp spot in the attic after a heavy rain, or granules collecting at the base of a downspout where water has been running somewhere it shouldn’t.
Key Takeaways
- Typical installed cost in Santa Clarita: $280 – $640 per flashing point (step flashing runs lower, chimney flashing higher).
- We carry IKO-compatible flashing stock on the truck, so most replacements happen in one visit.
- Every replacement is covered by our 365-Day Done Right Promise, in writing, at no extra cost.
- Flashing failures don’t fix themselves. Water moves fast through a broken seam, and Santa Clarita’s freeze-thaw cycles in the higher elevations make small gaps bigger every winter.
Which IKO Models This Applies To
IKO’s shingle lines share a common flashing profile, which simplifies things: if your roof has Cambridge, Dynasty, Nordic, or Marathon shingles, the step flashing, apron flashing, and pipe boot flashing we stock will match without modification. The one compatibility gotcha to know about: IKO’s architectural lines run a slightly thicker profile than their three-tab Marathon line, which means the step flashing needs a touch more clearance at the shingle butt. We check that on every job because a flashing that sits too tight against a thick architectural shingle will bind when the deck expands in summer heat, and that’s a leak waiting to happen.
If you’re not sure which IKO line is on your roof, check the paperwork from install or look for the shingle wrapper label. Most Santa Clarita homes we work on have had a re-roof at some point since the 2000s building boom, and the odds are good it’s Cambridge or Dynasty in a Driftwood or Dual Grey color. The flashing itself, not the shingle, is what we’re matching – and IKO’s flashing spec is consistent across those lines. For OEM versus aftermarket: we stock both. The OEM flashing carries the IKO name and exact factory dims; a quality aftermarket equivalent in 26-gauge galvanized or aluminum performs the same and costs less. We’ll quote both and let you decide.
Styles & brands we work with






Signs Your IKO Flashing Replacement Is Failing
- Water staining on ceilings or walls near chimneys, skylights, or roof-wall intersections. This is the classic flashing leak. The stain usually appears after a rain with wind, because wind-driven water finds the gap and follows the path of least resistance down the framing.
- Lifted or curling flashing at the roof edge or against a vertical wall. When you can see metal pulling away from a wall or rake edge, the seal has broken. In Santa Clarita, thermal expansion from summer roof temps over 140°F works flashing loose over time, especially on south-facing slopes. Saugus and Valencia get the worst of it.
- Granule buildup in gutters near flashing points. Water pouring over a failed flashing area erodes the shingle granules downstream. If one section of gutter fills with grit faster than the rest, water is taking a bad path somewhere above it.
- Rust, tears, or pinholes in exposed flashing metal. Galvanized flashing has a service life, and in canyon areas with heavier morning dew plus our dry wind cycles, that life runs 15 to 20 years before pinholes form. Once rust starts, replacement beats caulk every time.
- Damp insulation or decking in the attic after a rain. Sometimes the leak never reaches the drywall; it saturates the attic insulation first. If you’re up there in winter and find a damp patch near the chimney or a vent pipe, that’s the flashing, not the shingles.
See the difference
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After
Before
After
Before
AfterReplacement Cost & What’s Included
In Santa Clarita, here’s the honest pricing breakdown we give over the phone before we ever send a crew out:
- Step flashing replacement (roof-to-wall intersections): $280 – $420 per wall run. This is the most common flashing repair, and it’s usually contained to one section rather than the full run.
- Pipe boot / vent pipe flashing: $220 – $340. Includes the boot, collar, and resealing the surrounding shingles.
- Chimney flashing (step + counter flashing): $450 – $780 depending on chimney width, accessibility, and whether the old mortar needs regrinding. Canyon Country and Sand Canyon homes with older masonry chimneys tend to run toward the higher end.
- Valley flashing or headwall flashing: $380 – $640. These are longer runs and the price reflects the extra metal and shingle rework.
Every quote includes the flashing metal itself, the sealant, the shingle rework to get it watertight, haul-away of the old material, and our 365-Day Done Right Promise in writing. The written price you approve before we start is the invoice price. No change orders. No “we found more damage once we opened it up” surprises – if we do find additional problems, we photograph them, show you, and give you a new written price before proceeding. That’s the Relay Visibility Guarantee, and it’s how we’ve worked since 2000.
DIY or Call Us?
What you can safely do yourself: get on a ladder (not the roof) and inspect the flashing from the gutter line. Look for obvious gaps, lifted metal, or cracked sealant. Take photos. That’s the extent of safe DIY, because flashing replacement means lifting shingles, and lifted shingles in the wrong hands crack or tear, and then a $300 flashing job becomes a $900 shingle replacement. It also means working at height with tools in both hands, which is where most homeowner injuries happen.
Roof work on a ladder and a sloped deck is not the place to save a few hundred dollars. If the flashing has failed and water is getting in, the damage compounds every week it’s left open. The honest move is to call us at (661) 219-7793 for a free estimate. We’ll tell you exactly what’s failing, what it costs, and whether the repair will hold – and if it won’t, we’ll put that in writing too.
FAQs
Galvanized IKO-compatible flashing typically lasts 15 to 20 years in Santa Clarita before the coating breaks down, though south-facing flashing in full sun often fails closer to 12 to 15 years. Aluminum flashing typically outlasts galvanized here because it doesn’t rust, though it costs more upfront. Call (661) 219-7793 and we’ll match the right material to your exposure.
Small gaps and cracks can be sealed as a temporary fix, and we’ll do that if you ask and the decking is still dry. But if the flashing is rusted, torn, or pulled away from the wall, replacement is the only fix that won’t leak again in six months. We’ll show you photos either way so you’re deciding with real information.
Most single-point flashing replacements, a pipe boot or one wall run, take 2 to 3 hours from setup to cleanup. Chimney flashing runs 4 to 6 hours because of the counter flashing and mortar work. You’ll get a trackable arrival time before we come out, so you’re not stuck in a four-hour window.
We stock IKO-compatible step flashing, pipe boots, and apron flashing in 26-gauge galvanized and aluminum on our trucks, so most jobs are done in one visit. We also carry flashing profiles sized for GAF, Owens Corning, and CertainTeed roofs if you have a mixed-material situation. For a same-week appointment, call (661) 219-7793.
If your flashing has failed and you want a straight answer on what it’ll cost to fix, call Crestview Roofing Co Santa Clarita at (661) 219-7793. We’ll give you a free estimate, in writing, before any work starts – and every estimate we hand you is one we’d be comfortable signing twice.
Written by Dylan Pace, Owner, Crestview Roofing Co Santa Clarita at Crestview Roofing Co Santa Clarita, serving Santa Clarita and nearby areas.