Roof Replacement: Reasons to Replace Your Roof

November 13, 2024 · 6 min read · Replacement

Elevated view of a white flat-roofed sports building and two green padel courts beside parked cars

Why Palm Beach County homeowners replace their roofs

Nobody replaces a roof for fun. In our experience, the decision nearly always traces back to one of five reasons, and often two of them at once. Knowing which one applies to your house tells you how urgent it is and what the new roof needs to solve.

Molsbee Roofing has replaced roofs across Palm Beach County since 1975, from Lake Worth Beach cottages to tile homes on the island of Palm Beach.

Reason one: the waterproofing has worn out

Age is the most common trigger, but the useful question is not "how old is the roof?" It is "how old is the layer that keeps the water out?"

Tile roofs usually outlast their underlayment. Attic heat ages the underlayment faster than the tile above it, so a tile roof can look fine from the street while it is failing underneath. On clay barrel tile, we can often detach and reset: lift the tile, replace the underlayment and reset the same tile.
Shingle roofs wear out top and bottom together. Bare spots, curling and brittle tabs across the roof mean the whole covering is done.
Metal roofs tend to go at the fasteners, seams and flashing first, especially near salt water.
Flat roofs show it in ponding, blisters and open seams.

Material lifespans are measured in decades, but sun, salt and how the roof was installed matter more than a number on a brochure.

Reason two: storm damage

Hurricane season runs from June through November, and a single storm can strip enough tile or shingle to make a repair impractical. Damage across several slopes can also run into the quarter-roof rule, covered below. After a storm, the question is whether the damage is limited to what you can see or whether the underlayment and decking took water too.

Reason three: leaks that keep coming back

One leak is a repair. A new leak every rainy season, in a different spot each time, means the waterproofing is failing across the roof and the repairs are chasing it. At that point, a replacement stops the cycle and the ceiling repairs that follow it.

Reason four: the code makes the decision

Two Palm Beach County rules often turn a repair into a replacement:

The quarter-roof rule. The quarter-roof rule considers how much of a roof system or section is repaired, replaced or recovered in any 12-month period. Above a quarter, the roof covering across that entire system or section generally must be replaced or recovered to meet current code requirements. If that system or section was built, repaired or replaced in compliance with the 2007 Florida Building Code or a later edition, only the portion being worked on must meet applicable current code requirements. We check which applies before we price.
Current wind design. A roof built before the Florida Building Code, 8th Edition may not be fastened for today's design wind speeds of 150 mph inland to 170 mph on the barrier islands. A re-roof brings the fastening, underlayment and edge details up to the current standard, and we specify a self-adhered secondary water barrier over the deck.

Reason five: selling, buying or keeping your policy

A roof is one of the first things a buyer's inspector and a buyer's insurer look at. Homeowners replace roofs before listing so the roof is not a negotiating point, and buyers replace them soon after closing when the inspection report flags it. Some owners replace because their carrier asks questions about the roof's age and condition at renewal. After a re-roof, we can provide a roof certification letter for your insurer.

Does where you live change the roof you can put on?

Sometimes. On the island of Palm Beach, a re-roof that changes the material or appearance goes before the Architectural Commission, which looks closely at the tile profile, and the town sets its own work calendar by ordinance. In Wellington's Equestrian Preserve, a parcel often carries a house and barns, so one property can mean several roofs on one permit set. In Boca Raton's Old Floresta, the historic guideline prefers straight barrel mission tile in terracotta. We plan the roof around those rules from the first visit.

See the tile roof options we install, or read when to replace your roof.

How we confirm the reason before recommending a roof

We start with a free roof inspection and photograph what we find, including the underlayment wherever it can be seen without opening the roof. If the roof has years left, the photos show that, and we say so. If it does not, you get a written scope with the price before any work starts, covering materials, underlayment, flashing, permits and any decking repairs we expect.

Who stands behind the new roof

Molsbee Roofing is a Florida certified roofing contractor, license CCC1327429, and has roofed homes here since 1975. We are a GAF Certified Contractor and an Owens Corning Preferred Contractor. A new roof carries our lifetime workmanship warranty, with the manufacturers' product warranties on the materials.