McGilvary Family · Licensed Roofing Since 1974 · Palm Beach County & South FloridaFL Certified Roofing Contractor CCC1331721 · (561) 856-5060
Case Study · Boca Raton, FL 33498 · Tile Roof Rebuild & Certification

25-year-old tile roof in West Boca: restored and certified for 5+ years.

A roughly 25-year-old concrete tile roof in Boca Raton was leaking at several high-water-flow sections. Dirty water stains on a fascia board were the first clue; under the tile, the plywood deck had rotted through. Rather than treat the roof's age as a verdict, we opened only the failing sections, replaced the rotted decking, rebuilt the valleys with new underlayment, reinstalled the existing tile, and issued a signed 5-Year Roof Certification.

Redacted 5-Year Roof Certification for a Boca Raton tile roof, signed by Mike McGilvary, CCC1331721
Real · Documented · Signed
Project at a Glance

Localized failure — localized rebuild.

A condition-based tile roof restoration in Boca Raton, documented from the first stain on the fascia to the signed certification.

~25 yrsapproximate age of the concrete tile roof
Deckrotted plywood replaced with new plywood sheathing
Valleysevery high-water-flow section rebuilt, tile reinstalled
5-YearRoof Certification issued July 2026
The Situation

A stain on the fascia — and a deck that had quietly rotted.

From the ground, the roof looked like what it was: a 25-year-old concrete tile roof on a Boca Raton home. The tell was a run of dirty water staining on a fascia board — the kind of mark that means water has been getting behind the roofing system for a long time, not just since the last storm. There were active leaks at more than one high-water-flow section, and on a roof of that age the usual recommendation writes itself: replace it.

We inspected the whole roof first. The majority of the tile was structurally sound and serviceable. Random checks of the underlayment across the field found satisfactory conditions with useful life remaining. The deterioration was concentrated in the valleys and drainage paths — where two slopes meet and the roofing system takes the most water — and in the aging flat sections. When we opened the stained section, the findings confirmed the cause: the roof decking there had sustained significant wood rot from long-term water infiltration and had to be removed and replaced before anything could be properly restored.

That is a roof with failed sections, not a failed roof. The two call for very different work.

What the Inspection Found

Documented findings — straight from the certification.

Every item below was photographed and recorded in the certification package the homeowner received. It documents the roof’s condition and remaining useful life.

Findings

  • Comprehensive inspection performed on the tile and flat roofing systems.
  • The majority of roof tiles were structurally sound and serviceable.
  • Random inspection of the underlayment found satisfactory conditions across most of the roof, with useful life remaining.
  • Active water intrusion was isolated to specific high-water-flow sections, broken tiles, aging sections, and flashing deficiencies.
  • Conclusion: a strong candidate for preservation and restoration rather than full replacement.

Deficiencies identified

  • Active leaks at multiple high-water-flow roof sections.
  • Broken and compromised roof tiles.
  • Deteriorated underlayment in isolated areas.
  • Damaged sheathing plywood in the leak-affected sections.
  • Aging flat roof sections requiring restoration.
  • Various flashing deficiencies; loose field and cap tiles throughout the system.
What We Did

Opened what had failed — rebuilt it from the deck up.

The repairs performed, in sequence. Each failing section was stripped to the deck, rebuilt, waterproofed, and tied back into the sound roof around it before the original tile went back on.

  1. Removed roofing materials in every leak-affected sectionTile lifted and set aside at each failing valley and high-flow area so the deterioration could be seen and corrected at its source.
  2. Replaced compromised sheathing plywoodThe rotted decking under the stained fascia — and anywhere else the deck had been compromised — cut out and replaced with new plywood sheathing.
  3. Installed new self-adhered underlaymentNew roof tile underlayment over every rebuilt section, integrated with the surrounding system for a continuous waterproof layer.
  4. Rebuilt all high-water-flow roof sectionsEach valley and drainage path showing wear was rebuilt to a structurally sound, watertight condition — including the largest section on the roof.
  5. Flashing repairs, waterproofing upgrades, flat-roof restorationFlashing deficiencies corrected and the aging flat sections restored so the whole system sheds water the way it should.
  6. Replaced damaged tile, refastened loose field and cap tilesBroken tile swapped out, loose tiles re-secured, and the existing tile reinstalled in its original placement — then system-wide maintenance and restoration completed.
The Documentation

Eight photo exhibits, one signed certification.

These are the actual pages of the homeowner's certification package, with the address and owner details removed for privacy. Photos are useful. Photos attached to a licensed contractor's signed findings are proof.

Boca Raton tile roof certification photo exhibit: the deck had failed
Exhibit 1 — the deck had failedDirty water staining on the fascia pointed to trouble above. When the section was opened, the plywood decking had rotted from long-term water infiltration.
Boca Raton tile roof certification photo exhibit: new deck, new underlayment
Exhibit 2 — new deck, new underlaymentDeteriorated decking replaced and new tile underlayment installed, integrated with the surrounding roofing system.
Boca Raton tile roof certification photo exhibit: high-water-flow area rebuilt
Exhibit 3 — high-water-flow area rebuiltConcealed deterioration confirmed beneath the tile; compromised decking replaced with new plywood sheathing and the section waterproofed.
Boca Raton tile roof certification photo exhibit: the wear pattern, close up
Exhibit 4 — the wear pattern, close upWear isolated to the center of the valley where the most water runs; the surrounding underlayment still serviceable — localized deterioration, not roof-wide failure.
Boca Raton tile roof certification photo exhibit: localized valley wear
Exhibit 5 — localized valley wearA valley that had reached the end of its service life, confined to the primary water-flow path. The field of the roof did not need to come off to fix it.
Boca Raton tile roof certification photo exhibit: valley fully rebuilt
Exhibit 6 — valley fully rebuiltNew plywood sheathing where needed and new self-adhered underlayment, restoring the valley to a structurally sound, watertight condition.
Boca Raton tile roof certification photo exhibit: more sections rebuilt
Exhibit 7 — more sections rebuiltAdditional high-water-flow sections rebuilt with new underlayment, ready for the existing tile to go back in its original placement.
Boca Raton tile roof certification photo exhibit: the large water-flow area
Exhibit 8 — the large water-flow areaThe largest rebuilt section, waterproofed and ready for tile reinstallation.

Address, owner, and contact details redacted for privacy · Real Mike McGilvary Roofing project · Boca Raton, FL 33498 · Concrete tile, about 25 years old · Inspected July 14, 2026

What this certificate says, and what it doesn’t

  1. Certification is based only on a limited visual inspection of accessible and exposed roofing components at the time of inspection.
  2. No invasive, destructive, moisture-meter, infrared, engineering, structural, mold, pest, or hazardous-substance testing was performed unless separately stated in writing.
  3. Concealed, hidden, underlying, or inaccessible conditions may exist and are excluded.
  4. Remaining useful life is a professional opinion based on observable conditions and not a guarantee or warranty of future performance.
  5. This certification is not a warranty, express or implied, unless a separate written warranty is issued.
The Outcome

Certified for five years — with the original tile back in place.

With the restoration complete, Mike inspected the finished roof and issued a signed 5-Year Roof Certification & Remaining Useful Life Assessment — inspected July 14, 2026 and valid through July 14, 2031. In the certificate’s own words: “This roof, as a whole, is presently in a structurally sound condition and is expected to provide useful service for a period exceeding five (5) years, based upon observable conditions at the time of inspection.” The homeowner kept a roof that still looks original, has a written record of exactly what was found and what was rebuilt, and did not pay for a tear-off that the roof's condition never called for.

Continued annual inspections and routine maintenance may further extend the service life of the roof system.

Remaining useful life opinion — from the certification

“Based upon observable conditions at the time of inspection and completion of the recommended restoration work, it is our professional opinion that this roofing system possesses an estimated remaining useful life exceeding five (5) years.”

A rotted deck sounds like the end of a roof. On this house it was the end of one valley — and the beginning of a five-year certification.
Why This Roof Was Preserved

Where the water runs is where the roof wears.

Properly installed concrete and clay tile usually outlasts the underlayment and flashing beneath it. What wears out first is the underlayment and decking, and it wears fastest in the valleys and drainage paths that carry the most water. That is exactly the pattern this roof showed: the wear on each opened valley was confined to the center of the drainage path, while the underlayment on either side was still serviceable. The exhibit pages above show it plainly.

We inspect first and evaluate whether repairs or targeted rebuilding can extend the roof's useful life before recommending full replacement. When the evidence shows localized deterioration on a roof that is otherwise sound, rebuilding the failed sections — deck, underlayment, flashing — and reinstalling the existing tile is the recommendation we can sign. It is the same approach we documented on a larger Boca Raton tile-and-flat-roof estate, and it is how we approach repair versus replacement on every roof we inspect.

Questions About This Project

Rotted decks and rebuilt valleys, answered.

If the roof deck is rotted, doesn't the roof need to be replaced?
Not necessarily. Rot is usually local to where water has been sitting or running — here, the lower end of a valley and the section above a stained fascia. The compromised plywood is cut out and replaced with new plywood sheathing, new self-adhered underlayment goes over it, and the existing tile is reinstalled. Replacement becomes the right call only when the deterioration is roof-wide, which is exactly what a comprehensive inspection is meant to determine before anyone recommends anything.
What does dirty water staining on a fascia board mean?
Dirty, discolored staining on a fascia is a sign that water has been migrating behind the roofing system for a long time, carrying debris with it, rather than a one-time overflow. It often points to deteriorated underlayment or decking on the slope above. On this Boca Raton roof it was the first visible clue, and opening that section confirmed the rotted deck beneath. It is worth having any staining like this inspected rather than painted over.
How do you know the rest of the roof was still sound?
By checking it, not assuming it. Beyond the leak areas, we lifted tile at random locations across the field to inspect the underlayment directly, and found satisfactory conditions with useful life remaining. The wear on each opened valley was confined to the center of the drainage path, with serviceable underlayment on either side. That pattern — localized deterioration on an otherwise serviceable system — is what makes a section rebuild the correct recommendation.
Can a repaired 25-year-old tile roof be certified?
It can, when its condition supports it. A roof certification is based on observable conditions at the time of inspection, not the roof's age. Once the failed sections here were rebuilt and the flashing and flat sections restored, the roof as a whole was structurally sound and expected to provide useful service for more than five years, so a 5-Year Roof Certification was issued. A certification is a professional opinion, not a warranty, and it does not guarantee any insurance outcome. See our certification page.
How does this relate to Florida's roof age law?
Under Florida Statute §627.7011, a homeowner with a roof at least 15 years old may obtain an inspection by an insurer-approved authorized inspector before an insurer requires replacement based on age; if the inspection shows five or more years of remaining useful life, the insurer cannot refuse to issue or renew the policy solely because of the roof's age. Inspection results do not guarantee coverage — insurers may still apply other lawful underwriting and property-condition requirements. Full guide: Florida Roof Age Law.
Documented by Mike McGilvaryFlorida Certified Roofing Contractor · License CCC1331721 · A McGilvary Family Legacy of Licensed Roofing in Palm Beach County Since 1974

Details of this project have been anonymized for the homeowner's privacy. Every roof is different; the condition, scope, and outcome described here are specific to this project and are not a quote, a guarantee, or a promise of any particular insurance result. Whether any roof qualifies for repair or certification depends on its actual condition as determined by inspection. A roof certification is based on a limited visual inspection of accessible components, is a professional opinion and not a warranty, and does not guarantee any insurer's decision.

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Stains on the fascia? Leaks at the valleys?

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