There’s a drip in the workshop every time it rains, and you’ve traced it to a row of screws with rust streaks running down from them. Or you’re planning a new roof for the house, the barn or the carport and wondering if corrugated metal is a smart choice. Corrugated metal roofing in Deltona is common on homes, outbuildings and small commercial buildings, and it’s simple, but it has a few weak spots worth knowing about.
You want an honest read on whether your roof needs a few hours of work or new panels. You also don’t want to be talked into a more expensive system you don’t need.
APC Roofing is GAF Certified, licensed in Florida (CCC1337030) and insured, and your inspection is free. Call 386-259-8425 to book it.
What corrugated metal roofing is
Corrugated metal is made of long sheets pressed into a repeating wave or ribbed pattern. The ribs give a thin sheet its stiffness, so it can span across the framing below. The panels overlap at the sides and ends and are fastened straight through the face of the metal with screws that have a rubber washer under the head.
Those visible screws are why it’s called an exposed-fastener roof. It’s quick to install and generally costs less than a concealed-fastener system like standing seam, which is why you see it on so many barns, sheds, carports, porches and some homes. The trade-off is that every screw is a small hole in the roof, sealed only by its washer.
Why corrugated roofs leak
Almost every leak on a corrugated roof comes back to the fasteners or the overlaps.
Washers wear out. The rubber washers under the screw heads take the full Florida sun. Over years they dry out, crack and stop sealing, and water follows the screw down into the building.
Screws back out. Metal panels expand in the afternoon heat and shrink as they cool at night. That daily movement works at every screw. Over time some loosen, the hole wears into an oval, and the washer no longer sits tight.
Screws were driven wrong. Overdriven screws crush the washer. Underdriven ones never seal. Screws placed in the wrong part of the rib, or that missed the framing below, leak from day one.
Overlaps open up. Side and end laps need enough overlap and proper sealing to keep wind-driven rain out. In a strong storm, water can be pushed uphill under a short lap.
Re-screw, repair or replace?
When the panels are solid and leaks come from tired fasteners, a re-screw is often the right fix. Old screws come out and new ones go in, sometimes a size larger so they bite fresh metal. It can add years of service without touching the panels.
Replacing individual panels works when damage is limited, like a dent from a falling branch or a section with rust-through.
Replacement of the whole roof makes sense when rust has gone through the panels in many places, when the framing or decking below is rotting, or when the roof has been patched so many times it never stays dry. You’ll get photos and a written estimate showing which of these fits your roof.
Corrugated metal in Deltona’s climate
Deltona is inland, so salt air isn’t the main threat. Heat and storms are. Strong sun bakes washers and fades finishes, and the big daily temperature swing keeps the panels moving.
Afternoon thunderstorms bring heavy rain and wind, and rain on a metal roof can be loud. Installing panels over solid decking with underlayment, rather than over open framing, cuts down the noise and adds a second line of defense against leaks. That’s worth thinking about on a living space, less so on a shed.
Hurricane season raises the stakes on attachment. Wind pulls hardest at the edges and corners, so screw spacing and the trim along the eaves and rakes matter. Galvalume-coated steel with a factory paint finish is a common choice inland. Aluminum costs more and is mostly chosen near salt water.
Condensation is the other inland issue. Warm, humid air meets cool metal and water forms on the underside. On an open barn it drips. On a home it can soak insulation, so the underlayment and ventilation plan matter.
Corrugated or standing seam?
If you’re putting metal on your house, it’s worth comparing corrugated with standing seam. Standing seam hides its fasteners under the seams, which removes the main source of leaks and the need for future re-screws. It costs more up front. Corrugated is often the practical choice for outbuildings, carports and budgets that need to stretch. Our standing seam metal roofing in Deltona page covers that option.
How it works with APC Roofing
- Book your free inspection. Call 386-259-8425 or request a free online estimate.
- Get a clear, honest assessment and estimate. We check the fasteners, laps, trim, panels and what’s underneath, then give you photos and a written estimate. Financing is available through Aqua Finance, Fortifi, Hearth and Home Run Finance.
- Your roof gets done and the site gets cleaned up. Metal scraps and old screws get picked up before the crew leaves.
A few leaking screws are an easy fix. Left alone, they let water rot the wood beneath, and a re-screw turns into new framing and new panels.
Corrugated metal roofing questions from Deltona
Can you put corrugated metal over my old shingle roof?
No. We always tear the old shingles off down to the deck first. That way soft decking or extra layers get found and fixed before the corrugated metal goes on.
How often do the screws on a corrugated roof need replacing?
It varies with the screws, the sun exposure and how the roof was installed. Check them every few years, and look closely if you see rust streaks or drips.
Is corrugated metal good in a hurricane?
It can hold up well when it’s the right gauge and fastened in a tight enough pattern for Florida wind loads, with solid trim at the edges.
Do you work on metal roofs on barns and sheds?
Yes. We work on corrugated metal on homes, outbuildings and small commercial buildings. See all our roofing services in Deltona.
Book your metal roof inspection
Call 386-259-8425 or book your free inspection online. You’ll know whether your roof needs a re-screw, a few panels or a fresh start, and you can count on a dry building through the next storm season.
