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IKO Roofing: The San Francisco Owner’s Guide
We stock and install IKO-compatible roofing materials throughout San Francisco, with full roof replacements typically running $9,440 – $23,600 installed. The per-square cost for IKO shingles including tear-off, underlayment, and labor lands between $590 and $1,475 depending on the series and roof pitch. Most homeowners call us because they’ve spotted granules in a gutter or found a leak after a winter storm and want to know exactly what failed before an insurance claim or a patch job gets thrown at it.
What you’re usually dealing with is not one bad shingle. It’s a system that has aged out or was installed wrong to begin with. IKO makes a solid product, but San Francisco’s fog cycles, salt air in the western neighborhoods, and steep Victorian pitches stress roofing materials in ways a spec sheet doesn’t describe.
Key Takeaways:
- IKO roof replacement in San Francisco runs $9,440 – $23,600 installed, depending on roof size, pitch, and tear-off depth.
- Targeted IKO shingle repair or section replacement typically falls in the $470 – $2,125 range.
- IKO’s best-known lines (Cambridge, Dynasty, Nordic) are not interchangeable below the same deck; each has different exposure, nail strip placement, and wind rating.
- San Francisco’s coastal humidity means nail pull-through and underlayment rot fail before the shingles do in most cases we open up.
- We carry IKO Cambridge in core colors on the truck; Dynasty and Nordic are ordered per job.
Which IKO Models This Applies To
We work with the full IKO line most common in San Francisco: Cambridge, Dynasty, and Nordic. Cambridge is the workhorse architectural shingle you see on the majority of homes from the Sunset through Glen Park. Dynasty is IKO’s heavier laminated shingle with a larger exposure and a stronger wind rating, and Nordic is their designer-grade line with the high-profile shadow bands.
Here’s the compatibility gotcha most owners don’t know: you cannot mix Cambridge across manufacturing years without visible color drift. IKO changes granule blends slightly between production runs, so a patch job with a “matching” bundle off the shelf at a supply yard often reads as a mismatched square from the street. We match by lot number when we can, and when we can’t, we’ll tell you before we open a single bundle.
The OEM-vs-aftermarket decision is simpler for roofing than for mechanical parts. IKO shingles are commodity-priced enough that aftermarket equivalents rarely save you meaningful money. Where aftermarket matters is underlayment, flashing, and ridge cap. We use IKO’s own ridge cap and starter strip with their shingles because the warranty math and the wind uplift testing are tied to that system. A GAF starter strip under IKO shingles will work, but you have just voided the nailing-pattern assumptions IKO’s warranty relies on.
If you don’t know your series, pop a ladder to eye level with the roof edge. Cambridge shingles read roughly 5-5/8 inches of exposed face. Dynasty exposes a full 5-7/8. And Nordic has a random overlay look with shadow lines that run deeper than either. You can also check the bundle wrapper in your garage or crawl space: IKO prints the series name in bold on the long side.
Styles & brands we work with
Signs Your IKO Roofing Is Failing
These are the five symptoms we hear most on service calls across San Francisco, and what each one actually means:
- Granules in the gutter after winter rain. IKO shingles shed a small amount of granule during break-in, but consistent accumulation below a downspout means the asphalt topcoat is oxidizing faster than the shingle above it. In the Outer Sunset and Richmond, that’s usually UV-through-fog deterioration accelerating the top third of the roof while the lower slopes stay intact.
- Cupping or curling at the shingle corners. This is trapped moisture under the shingle from failed underlayment or insufficient attic ventilation. IKO warranties cover manufacturing defects, not a roof deck that was never vented correctly. We see this most on older San Francisco homes with enclosed soffits that someone sealed shut during a remodel.
- A soft, spongy feel when you walk a low-slope section. The shingle may look intact, but the substrate underneath is compromised. That’s plywood or OSB rot from a previous leak that was covered over, and it’s the most expensive fix because it means deck replacement, not just a shingle swap.
- Nail pop visible as little humps pushing up through the shingle face. This happens when the nail wasn’t driven flush or the deck sheathing is swelling from moisture. In San Francisco’s fog belt, we open more roofs with nail problems than shingle problems. IKO’s high-nail strip on Dynasty helps, but it can’t fix a rotted deck.
- Interior water staining on a ceiling, wall, or chimney chase after rain. By the time you see it inside, the leak has been running under the shingles for weeks. The entry point is usually two or three feet uphill from the stain. Flashing at a chimney, skylight, or valley is the most common culprit on San Francisco’s steep roofs, not the shingle itself.
See the difference
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After
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AfterReplacement Cost & What’s Included
A full IKO roof replacement in San Francisco runs $9,440 – $23,600 installed. That range covers tear-off of the existing roof, disposal, new IKO underlayment, starter strip, field shingles, ridge cap, and all flashing replaced at penetrations and valleys. The big drivers are roof size, pitch, number of layers being torn off, and whether the deck sheathing passes inspection or needs replacement.
A targeted repair, meaning a section of failed shingles or a flashing replacement around a chimney or skylight, lands between $470 and $2,125 depending on access and what we expose once we’re up there. We give a written price before any work starts, and that number does not move at the door. If we open the deck and find rot, we stop, show you a photo, and give you a line-item change with the cost before we cut anything further.
Every IKO roof we install is covered by our 365-Day Done Right Promise in writing. If the work fails inside one year, Bradford returns and corrects it at no charge. IKO’s manufacturer warranty on the shingles runs separately, and we document the installation so that warranty claim, should you ever need one, has the paperwork behind it.
DIY or Call Us?
Roofing is one job where I’ll tell you plainly: do not get on a San Francisco roof without proper fall protection, a solid roof bracket setup, and the right tools. The pitches on even the modest postwar homes in the Avenues run steep enough that one wrong step on damp shingles sends you off the edge. IKO shingles don’t just snap in place; they need nailed at the right depth, aligned to the exposure, and lapped so water never has a horizontal seam to follow.
What you can do safely is get eyes on the obvious: check gutters for granule buildup, look for shingles that are out of line from the ground, and photograph any ceiling stains with a measurement reference. That gives us a head start when you call. The actual repair, and anything requiring a ladder above one story, is our job. Call (831) 610-5598 and we’ll come out, evaluate it, and give you a written price on the spot.
FAQs
IKO Cambridge and Dynasty shingles typically last 18 – 25 years in San Francisco’s coastal climate, which is slightly shorter than their inland lifespan because the fog cycles accelerate asphalt oxidation and granule loss. Nordic can reach 30 years when the underlayment and ventilation are done right. If your roof is past year 20 and showing granule loss, it’s time for a professional assessment before a leak decides for you. Call (831) 610-5598 for a written evaluation.
Yes, if the failure is localized, meaning a single slope, a flashing point, or a small section of shingles. We repair IKO roofs regularly for $470 – $2,125 in San Francisco. But if the shingles are cupping across multiple faces or the granule loss is roof-wide, patching just postpones the full replacement and can leave you with a mismatched square. We’ll give you an honest read, with photos, and you decide.
Most single-family IKO roof replacements in San Francisco take two to four working days, depending on roof size and whether we’re tearing off one layer or two. Bad weather stretches that, since we don’t leave an exposed deck in the fog or rain overnight. We’ll put the schedule in writing before we start so you know exactly when the job closes and when the written guarantee is in your hand.
We keep IKO Cambridge in the core colors on the truck, so a small repair often happens same visit. Dynasty and Nordic are ordered per job and typically arrive within a few days from our San Francisco supplier. If you need a specific IKO color that’s been discontinued, we’ll source the closest lot match and tell you exactly what the variance looks like before you commit.
If you’ve got an IKO roof that’s leaking, losing granules, or just past its useful life, call (831) 610-5598 for a free estimate. Curtis Lane and the Bradford Remodeling crew will look at it in person, tell you what failed and why, and hand you a straight number on paper. Straight number, real scope, no surprises at close-out.
Written by Curtis Lane, Owner, Bradford Remodeling Co – San Francisco, CA at Bradford Remodeling Co San Francisco, serving San Francisco and nearby areas.
