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Moen Roofing: The Long Beach Owner’s Guide
Moen roofing systems installed in Long Beach homes typically run $8,000-$20,000 for full replacement, with repairs starting at $400. We stock Moen-compatible flashing, vent collars, and underlayment on every Rowan truck, and most part-specific jobs finish in a single visit. Most Long Beach owners discover a Moen part has failed when they spot water staining on a ceiling panel, find granules collecting in gutters, or notice a vent stack collar has pulled loose after a Santa Ana wind event. The part looks small; the leak it lets through is not.
Which Moen Models This Applies To
Moen entered roofing through builder-grade packages common in Long Beach tract homes built 1998-2012, particularly in neighborhoods like Bixby Knolls and the traffic circle area. The line you have matters because Moen used three distinct flashing profiles during that period: the early R-series (1998-2004) with a 2-inch collar height, the mid-run S-series (2004-2009) with a wider neoprene seal, and the final T-series (2009-2012) with an integrated drip edge. The R-series collar is no longer manufactured OEM, but we source a cross-referenced aftermarket equivalent from Oatey that matches the 2-inch spec and carries the same 15-year membrane warranty. The S and T series still have limited OEM availability, though lead times run 10-14 days. We keep all three profiles on our trucks because Long Beach’s mix of construction eras means we hit all three in a typical month.
To identify yours: check the stamped code on the vent collar flange. R-series reads “MN-R” followed by two digits; S-series adds a dash and “S”; T-series drops the letter prefix for a four-digit date code. If the stamp is painted over, measure collar height from deck to seal lip. R is 2 inches, S is 2.75 inches, T is 3.25 inches with the integrated drip. We photograph the stamp, text it to you, and confirm the match before we order or cut anything.
Signs Your Moen Roofing Is Failing

- Water stains on ceiling drywall below vent stacks. The neoprene seal in Moen collars hardens after 12-15 years in Long Beach’s UV exposure, losing its compression fit. Once the seal gaps, wind-driven rain from Pacific storms tracks straight down the pipe.
- Granule accumulation in gutters or at downspout exits. Moen’s builder-grade shingle packages used a thinner asphalt mat than GAF or Owens Corning equivalents of the same era. Granule shedding accelerates once the mat begins to dry-crack, usually around year 18 in coastal sun.
- Lifted or cupped shingles near ridge vents. Moen ridge vent systems relied on a single nail line with a plastic compression cap. The plastic fatigues in heat cycles, nails back out, and the vent flange lifts enough to let wind push water uphill.
- Musty odor in attic spaces after rain. This often traces to Moen’s step-flashing detail, which used a lighter-gauge aluminum than current code requires. Where it meets stucco or siding in Belmont Shore’s older homes, capillary action wicks moisture behind the cladding.
- Visible daylight through roof boards from inside the attic. On Moen T-series jobs, the integrated drip edge was factory-sealed with a butyl tape that degrades faster in salt air. Gap formation at the eave lets light and water through simultaneously.
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AfterReplacement Cost & What’s Included
Roof repair in Long Beach runs $400-$1,800 depending on access, layer count, and whether we match existing shingle color or transition a section. A Moen collar swap specifically falls at the lower end, typically $400-$650, because the part is small and the labor is targeted. Full replacement of a Moen shingle package starts at $8,000 for a 1,200-square-foot roof and tops out around $20,000 for complex geometry with multiple vent penetrations.
Every Rowan quote is a flat written price with line-item breakdown: materials by brand and spec, labor hours, permit fees if applicable, and disposal. Under Clause 1 of the Haven Standard, that price is fixed before work starts. No change proceeds without a signed change order. The 365-Day Done Right Promise covers the repair; if the seal fails or the match degrades, we make it right. You also receive a documented photo record of the deck condition, the installed part, and the water test.
| Service | Price Range (Long Beach) | Typical Timeline |
|---|---|---|
| Moen collar/flashing repair | $400-$650 | Same day |
| Sectional shingle replacement | $1,200-$3,500 | 1-2 days |
| Full roof replacement (Moen or other) | $8,000-$20,000 | 3-5 days |
| Tile roof repair | $600-$2,500 | 1-3 days |
DIY or Call Us?

There is one thing a homeowner can safely check: the stamped model code on the vent collar flange, visible from the attic side with a flashlight. Write it down, photograph it, and you have done the diagnostic step that saves us twenty minutes on arrival.
Everything past that point belongs to a crew with fall protection, deck assessment training, and liability coverage. Walking a 6/12 pitch to replace a collar means working at height on a surface that may be compromised by the same leak you’re trying to fix. The butyl sealant application requires a clean, dry substrate and a heat-gun technique that looks simple until you see the gap that forms when it is done cold. We have re-done three Long Beach DIY collar jobs in the past eighteen months; in two cases, the owner had also damaged surrounding shingles with an incompatible sealant. Measure twice, write it down, then build it. For this part, the second measure is ours.
Call (424) 567-7009 to schedule your free estimate. We will confirm the model match, quote the repair in writing, and stock the part before we arrive.
FAQs
Moen collars and flashing in Long Beach typically last 12-18 years, shorter than the 20-25 year rating because coastal UV and salt air accelerate neoprene and butyl degradation. The S-series seal tends to fail first; the T-series drip edge lasts longest but costs more to replace when it goes. Call (424) 567-7009 for an exact quote on your model - estimates are free.
Temporary patching with roof cement buys a few months but does not restore the compression seal that keeps wind-driven rain out. We do not recommend it as a permanent fix because the underlying neoprene is already hardened. Replacement with a matched collar is the only repair we warranty. Call (424) 567-7009 for an exact quote - estimates are free.
A single collar replacement takes 45-90 minutes once we are on the roof, including deck inspection, old part removal, substrate prep, and sealant cure time. We schedule a two-hour window to account for access and weather. Call (424) 567-7009 to book - estimates are free.
We stock R, S, and T-series compatible collars and flashing on every Rowan truck serving Long Beach, plus GAF and Owens Corning equivalents for full replacements. If your job requires an OEM T-series part with a specific date code, we confirm availability and lead time in writing before you commit. Call (424) 567-7009 to verify stock for your model - estimates are free.
Written by Grant Rowan, Owner, Rowan Construction Group Long Beach at Rowan Construction Group Long Beach, serving Long Beach and nearby areas.







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