Metal roofing
Architectural shingles
Tile roofing
GAF
Owens Corning
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
IKO Underlayment & Deck Repair: The Fort Lauderdale Owner’s Guide
IKO underlayment and deck repair in Fort Lauderdale typically runs $90 to $240 per 100 square feet for underlayment replacement, and $2.50 to $4.50 per square foot when rotted decking sections need to be cut out and replaced before new underlayment goes down. Most jobs take one day once we get the old roofing material off and see what’s underneath. You’ll usually discover this problem the same way: a roofer peels back shingles during a leak repair or a re-roof and finds water damaged decking and the synthetic felt beneath it has given up. Fort Lauderdale’s rainy seasons and humidity make this one of the more common repairs we see on IKO roofs, and the good news is it’s a fixable problem when caught before the damage spreads to rafters.
- Key takeaways: We stock IKO-compatible underlayment and deck-grade plywood or OSB on our trucks for most Fort Lauderdale jobs.
- You get a written line-item price before any cutting starts, and a 365-Day Done Right Promise on the entire repair.
- If your IKO roof is 12 to 15 years old and you’ve never had the underlayment inspected, the deck may have damage you can’t see from the ground.
Which IKO Models This Applies To
Underlayment and deck repair isn’t model-specific the way a shingle color or profile is. IKO pairs their dimensional shingles – the Dynasty and Cambridge lines are the most common in Broward County – with their own synthetic underlayments like StormShield and GoldShield, or sometimes a 15 lb or 30 lb felt depending on what was standard when the roof was installed. The deck itself is a structural layer, usually 1/2 inch or 5/8 inch CDX plywood or 7/16 inch OSB, and it’s the same no matter which shingle brand sits on top.
Where compatibility matters is the underlayment spec. IKO’s StormShield is sold in roll widths of 48 inches, covering about 200 square feet per roll at a 4-inch side lap. GoldShield falls under ASTM D226 Type I felt spec, while StormShield meets ASTM D1970 for self-sealing capabilities around fasteners. When we write a repair estimate in Fort Lauderdale, we match the replacement underlayment to what IKO’s current installation instructions call for on your shingle line, not just to whatever we happen to have on the truck. We’re an independent contractor, not affiliated with IKO directly, and we’ll use the manufacturer-recognized spec so your shingle warranty isn’t quietly voided by mismatched materials underneath.
Styles & brands we work with
Signs Your IKO Underlayment & Deck Repair Is Failing
- Water stains on ceilings or walls after a heavy rain where no shingles are visibly lifted. The shingle can look fine from below while the underlayment has worn through, letting water slow-soak into the deck and then the drywall.
- Soft spots when someone walks the roof. This usually means the plywood or OSB decking has absorbed enough moisture to delaminate. In Fort Lauderdale’s wet season, this can happen a few years after a small underlayment tear starts letting water in.
- Grit from shingles appearing in gutters sooner than expected. IKO shingles hold their granules well, so early granule loss often signals heat and moisture cycling that also weakens the underlayment layer below.
- A musty odor in the attic that gets worse after a storm. That smell is often damp decking, and by the time you notice it from inside, sections likely need replacement rather than just drying out.
- Fastener pops or visible rust on exposed nail heads in the attic. Rusted fasteners mean water has been getting past the underlayment and the deck is the layer soaking it up. Grant Whitlock has seen this enough in Fort Lauderdale attics to know it’s a warning sign the deck needs a close look, not just a patch job.
Replacement Cost & What’s Included
Here’s what you can expect to pay in Fort Lauderdale for IKO underlayment and deck work, labor included:
| Scope of Work | Typical Installed Price Range |
|---|---|
| Synthetic underlayment replacement (StormShield-class), per 100 sq ft | $90 – $140 |
| Decking section replacement (plywood or OSB), per 4′ × 8′ sheet | $80 – $120 per sheet including labor |
| Combined deck repair + underlayment, small area (up to 300 sq ft) | $540 – $780 |
| Full deck replacement on average Fort Lauderdale roof (1,500 – 2,000 sq ft) | $3,750 – $9,000 depending on deck condition |
What moves the price: how far the rot extends past what’s visible, whether your deck is plywood or OSB (plywood runs slightly higher but lasts longer through South Florida storms), and the pitch of your roof. Every estimate we write includes the underlayment, fasteners, decking as needed, and labor separated as line items, so you know exactly what you’re paying for. And every repair gets our 365-Day Done Right Promise in writing: if it’s not right within a year, we come back and make it right without charging you for the second visit.
See the difference
Before
After
Before
After
Before
AfterDIY or Call Us?
Here’s the honest split. You can safely check a few things from the ground: look for shingle edges that are curling inward, walk around the house after a rain and check gutter seams for excess water, and go into the attic on a dry day to look for dark spots on the underside of the decking. That’s smart homeowner monitoring.
What you shouldn’t do is climb onto a Fort Lauderdale roof after a storm and start pulling up shingles to check the underlayment. Our roofs get slick with humidity and algae, the pitch on older Broward County homes can be steeper than it looks from the ground, and once you break the shingle seal by lifting, you’ve created a new leak point if you can’t seal it back properly. Deck repair also means working with roofing nails and, on many homes, working at height – it’s not a weekend ladder project. If you’ve seen any of the signs above, call us at (754) 354-1224 and we’ll inspect the deck and underlayment for free as part of your repair estimate. You’ll get a written price before any work starts, and the person who shows up will be a background-checked, photo-badged technician whose name and photo you receive before they ring the doorbell.
FAQs
Expect 15 to 25 years from quality synthetic underlayment in South Florida, but Fort Lauderdale’s heat, humidity, and storm-driven rain tend to push that toward the lower end when the attic doesn’t ventilate well. Call (754) 354-1224 for a free attic and deck inspection if your roof is over 12 years old.
Small sections of rotted decking can be cut out and replaced without redoing the entire roof deck, as long as the rot hasn’t spread under the framing or into the rafters. Our technicians will mark the exact sheet boundaries on your written estimate.
A typical repair involving a few sheets of decking and fresh underlayment takes one day, though we schedule two dry days when possible so the exposed deck can be inspected thoroughly before we close it up. You’ll get a firm start time and the name of your technician before we arrive, per our Threshold Verified standard.
Yes, our Fort Lauderdale trucks carry IKO StormShield-class synthetic underlayment, plywood and OSB deck sheeting, and the fasteners we need for most underlayment and deck repairs. We also stock compatible materials for GAF, Owens Corning, and CertainTeed roofs if your underlayment repair reveals a different brand above the deck.
Call Mercer Roofing Co Fort Lauderdale
If you suspect the underlayment or deck under your IKO shingles is failing, start with a free estimate. Call (754) 354-1224 and you’ll speak to a real person who can schedule a Fort Lauderdale inspection, give you a written line-item price before any work begins, and send a background-checked, photo-badged technician whose name and photo arrive before they do. A good roof shouldn’t be something you think about – that means we did our job right.
Written by Grant Whitlock, Owner, Mercer Roofing Co Fort Lauderdale at Mercer Roofing Co Fort Lauderdale, serving Fort Lauderdale and nearby areas.