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Looking for a reliable commercial roofing contractor in Wellington Village, FL? Call Leo Roofing & Construction at (561) 935-4979 for expert services.

Your roof does more than just hold up your shingles — beneath that outer layer is the underlayment, a critical moisture barrier, secondary protection, and contributor to the overall lifespan of your roof. In South Florida’s coastal climate, underlayment has to fight salt, sun, humidity, and storm-force rain. At Leo Roofing & Construction , we’ve seen many roof issues start with underlayment problems. If you live in Palm Beach Gardens, Jupiter, West Palm Beach, Boca Raton, Boynton Beach, Wellington, Palm Beach, North Palm Beach, Juno Beach, or Tequesta, here are the signs to watch for — plus what to do if you detect issues. Leo Roofing & Construction can help you spot the signs. Don’t wait—call us at (561) 935-4979 for a no-obligation roof inspection today. What Is Underlayment — And Why It Matters Underlayment is the layer between your roof deck (plywood, OSB, or sheathing) and your roofing material (tiles, shingles, metal, etc.). Its job: to act as a moisture barrier if your outer covering fails or gets damaged to help with waterproofing around roof penetrations (vents, chimneys, skylights) to protect the deck from water, condensation, and wind-driven rain during strong storms In our Florida environment, underlayment is under constant stress: UV from intense sun, high humidity, salt spray near the coast, extreme heat, and frequent tropical storms. Common Causes of Underlayment Failure in South Florida These are some of the reasons underlayment fails more frequently here: Sun/UV Exposure — If roofing material shifts, cracks, or loosens, the underlayment may be exposed, degrading it quickly. Synthetic underlayment may blister or crack under intense UV & heat. Humidity & Moisture — High ambient moisture causes trapped condensation, which weakens underlayment, rots wood decking, promotes mold. Poor ventilation accelerates this. Salt Air & Corrosion (in coastal zones) — Salt particles in air and moisture accelerate degradation of fasteners, metal flashings, and can degrade underlayment adhesives or coatings. Storm Damage (Wind, Rain, Debris) — Heavy rain, wind uplift, flying debris can tear or displace roofing material, expose underlayment, cause tears. Hurricanes/tropical storms are major threats. Poor Installation or Low Quality Materials — Underlayment that’s improperly fastened, has wrong overlaps, not compatible with tiles/shingles/metal, or made from inferior material, will fail faster. Key Signs of Underlayment Failure You Can Spot Watch out for these warning signs in your home: