Owens Corning Underlayment & Deck Repair Nationwide

Owens Corning Underlayment & Deck Repair: The Fort Lauderdale Owner’s Guide

Owens Corning-compatible underlayment and roof deck repair in Fort Lauderdale typically runs $1,800 to $4,200 installed for a standard residential section, depending on how much decking has rotted and which underlayment product your roof needs. We stock Owens Corning Deck Defense, RhinoRoof, and ProArmor synthetic underlayments on our trucks, and we can match most materials same-day when the damage is found during a repair visit. Most Fort Lauderdale homeowners discover the problem the ugly way: a ceiling stain after a hard summer downpour, or a roofer pulling back shingles and finding soft, spongy decking that should have been replaced years ago.

Call (754) 732-9325

Here’s the part nobody tells you in Fort Lauderdale specifically: salt air and humidity don’t just age your shingles. They work their way under the felt or synthetic layer and quietly rot the plywood underneath. By the time you see the leak, the deck has usually been compromised for months. That’s why an Owens Corning underlayment repair here is rarely just an underlayment repair. It’s a deck repair with a proper moisture barrier on top.

Which Owens Corning Models This Applies To

If your roof was installed with an Owens Corning Total Protection Roofing System, you have a layered setup: Owens Corning shingles over an Owens Corning underlayment over the plywood deck. The underlayment is the unsung workhorse between those layers. The three Owens Corning underlayment products we work with most in Fort Lauderdale are Deck Defense (a synthetic with a slip-resistant surface), RhinoRoof (a higher-end synthetic with superior tear resistance), and ProArmor (a premium synthetic with a 6-month exposure rating, which matters if a storm strips shingles mid-job and your underlayment has to hold up bare for a while).

Here’s the compatibility gotcha: you can’t always see the underlayment brand after the roof is installed. Shingles hide it. If you’re matching an existing roof section, we peel back the shingles at the eave or a pipe boot to inspect what’s actually underneath. Some Fort Lauderdale homes built in the early 2000s have organic felt underlayment that’s now crumbling, and that’s not an Owens Corning product at all. In those cases, we’ll recommend a full section replacement with a modern synthetic rather than trying to patch old felt. The aftermarket question matters too: there are cheaper generics on the market, but Owens Corning’s synthetics have specific exposure and tear ratings that cheap imports don’t consistently meet. For a roof that has to survive hurricane-season wind-driven rain, we prefer staying with the Owens Corning spec.

Signs Your Owens Corning Underlayment & Deck Repair Is Failing

• Ceiling stains or drips after rain. This is the classic first sign. By the time water shows up inside your house, it has already traveled through the shingles, past the underlayment, and into the deck. The stain is just the last stop.
• Soft spots when walking the roof. If a roofer (or you, carefully) can feel the roof flex or sink underfoot, the decking plywood has absorbed moisture and lost structural integrity. In Fort Lauderdale humidity, this spreads faster than homeowners expect.
• Shingle curling, lifting, or granules in the gutters. When the underlayment fails, the shingles lose their stable base and start shifting. Granules washing down your downspout after every storm is a sign the shingle surface is aging too, and the two usually fail together.
• Visible daylight in the attic. Lift your head in the attic on a sunny day. If you can see pinpricks or slivers of light coming through the roof deck, water can get through those same openings. That’s a deck replacement signal, not a patch job.
• Rust or mildew around roof penetrations. Pipe boots, vents, and chimney flashing all rely on the underlayment lapping correctly around them. When the underlayment rots away near a penetration, water follows the opening straight to the deck. Fort Lauderdale’s salt-heavy air accelerates the corrosion of metal flashing too.

Replacement Cost & What’s Included

For a typical Fort Lauderdale home, here’s what Owens Corning underlayment and deck repair costs when you call Tilehurst Roofing. Deck replacement runs $4 to $6 per square foot of plywood removed and reinstalled, including the new CDX plywood, fasteners, and disposal. Owens Corning synthetic underlayment installation runs $0.75 to $1.25 per square foot depending on whether it’s Deck Defense or ProArmor. A small repair section of 200 to 400 square feet with one or two sheets of decking replaced usually lands between $1,800 and $3,200. A larger section with significant rot can push $4,200 or more. Every quote from us is a written, line-item price before work starts. You’ll know the cost of the plywood, the underlayment, the labor, and the haul-away as separate numbers. If the job changes scope mid-repair, you’ll see a written change order with a new price before we touch it. That’s how Greg Holloway runs every roof job in Fort Lauderdale, and it’s not negotiable.

What’s included: removal of failed decking and underlayment, inspection of the framing underneath, new CDX plywood to match the existing thickness, Owens Corning underlayment installed to manufacturer spec, and re-installation of the existing shingles if they’re still serviceable. If your shingles are too far gone, we’ll tell you straight and give you a separate replacement quote. The work carries our written guarantee, and if a repair fails inside the guarantee period, we return at no charge under the 365-Day Done Right Promise.

DIY or Call Us?

Some roof repairs are safe for a competent homeowner, but underlayment and deck replacement is not one of them. This work requires walking the roof, pulling shingles without damaging the surrounding section, cutting out rotted plywood with a circular saw set to the exact deck thickness, and reinstalling everything with proper fastening patterns. In Fort Lauderdale, the roof pitch on many homes adds real fall risk, and a plywood sheet that’s soft enough to need replacement is often soft enough to break through under your weight. If you want to do something useful before we arrive, check your attic for daylight and note where water stains appear after rain. That tells us exactly where to start walking. Then call (754) 732-9325 and we’ll do the rest. We tell you the price before we touch your roof. That’s just how it should work.

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