Guide Summary: How a Secondary Water Resistance (SWR) underlayment prevents catastrophic leaks if shingles blow off, plus homeowner insurance discount tips.

Your roof is your home's first line of defense during hurricane season. While shingles provide the visible outer layer, the most critical element during a high-wind event is the underlayment bonded directly to your plywood roof decking.

The Power of Secondary Water Resistance (SWR)

If high-speed storm winds blow off shingles or ridge caps, standard felt paper tears away instantly, exposing wood sheathing to torrential rain. An SWR barrier uses self-adhering peel-and-stick bitumen that seals tightly around every nail penetration—keeping your home 100% dry even if top shingles are lost.

Homeowners can check certified roofing specifications, storm readiness guides, and insurance wind mitigation inspection details at pslroofers.com.

💰 Insurance Discount Alert: Wind Mitigation Inspection

Upgrading to an SWR barrier and having a certified inspector verify hurricane clips and 8d ring-shank nailing can reduce Florida homeowner insurance wind premiums by up to 25–40% annually.

The Wind Mitigation Inspection: What It Actually Checks

The inspection that unlocks those insurance discounts isn't a general roof inspection — it's a specific checklist covering roof shape (hip roofs score better than gable roofs), roof-to-wall attachment (hurricane clips vs. older toe-nailed connections), roof deck attachment (nail size and spacing), secondary water resistance, and opening protection like impact windows or shutters. A homeowner can have a perfectly sound, recently-replaced roof and still miss out on a meaningful discount simply because nobody submitted the wind mitigation form to their insurer, or because the roof was replaced without documenting the upgrades made during the job. Asking a roofing contractor to provide wind-mitigation-ready documentation and photos AS PART of a replacement — not as an afterthought — is what actually gets the discount applied.

Repair vs. Full Replacement: A Realistic Decision Point

Not every storm-damaged roof needs full replacement, but Florida's insurance carriers increasingly won't renew a policy on a roof past a certain age (commonly 15-20 years) regardless of its condition, which changes the math even for roofs that could technically be repaired. A localized wind or hail repair makes sense for isolated damage on a roof under that age threshold with intact underlayment elsewhere; a full replacement becomes the more sensible call once a roof is old enough that an insurer is going to force the issue at the next renewal anyway, since spending on a patch repair right before a mandatory replacement is money that doesn't carry forward.

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Frequently Asked Questions (Q&A)

Key technical answers and municipal guidelines for Florida homeowners.

❓ What is Secondary Water Resistance (SWR), and does it reduce insurance premiums?
SWR is a continuous self-adhering modified bitumen underlayment (peel-and-stick) sealed directly to the roof deck. It qualifies homeowners for substantial Florida Wind Mitigation insurance discounts.
❓ How can I tell if missing shingles require a spot repair or a full replacement?
If damage is isolated to a few shingles and the surrounding shingles remain pliable with intact asphalt granules, a spot repair is effective. If shingles are brittle, curling, or the roof is over 15 years old, replacement is warranted.
❓ What wind speed rating is required for new roofs in St. Lucie County?
Under the current Florida Building Code, new residential roofing systems in Port St. Lucie must be engineered to withstand 150–160 MPH wind speeds with 6-nail fastening patterns and hurricane-rated starter strips.

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