FORTIFIED Roof Installation Myrtle Beach
IBHS-Certified Hurricane-Rated Roofing for Coastal South Carolina
FORTIFIED is the gold standard for hurricane-prone coastal SC. Weather Shield installs FORTIFIED-rated roofs that meet the Insurance Institute for Business & Home Safety (IBHS) standard and qualify Myrtle Beach homeowners for wind-premium insurance discounts of up to 35% under South Carolina law. Built for the Grand Strand, certified for your carrier, documented for resale.
FORTIFIED Roofing: By The Numbers
Every stat below is pulled from primary sources — IBHS research, the SC Department of Insurance, and published academic studies on real-world hurricane performance.
IBHS released the FORTIFIED Home program in 2010 alongside the opening of its $40 million research center in South Carolina, where full-scale houses are tested at winds up to 130 mph.
Source: IBHS 2025
South Carolina insurers that write wind coverage are required by state law to file actuarially justified FORTIFIED discounts; the SCDOI reports 17 insurers offering credits from 10% to 35% off the wind portion of the premium.
Source: SCDOI 2025
More than 70,000 FORTIFIED designations have been issued across 31 states, with the fastest growth in coastal wind zones including the Carolinas, Alabama, and Louisiana.
Source: IBHS 2025
After Hurricane Sally (2020), IBHS documented that FORTIFIED homes combined lower claim frequency and severity to reduce deductibles paid by policyholders by more than 60%.
Source: IBHS Hurricane Sally Study
FORTIFIED requires 8d ring-shank nails in an enhanced pattern — 6 inches on center at panel edges and 6 inches in the field — which nearly doubles roof-deck withdrawal strength vs. smooth-shank nails.
Source: IBHS FORTIFIED Roof Standard
The Alabama Center for Insurance Information and Research (ACIIR) at the University of Alabama measured the return on investment of FORTIFIED upgrades at up to 72% when combined insurance savings and avoided claims are counted.
Source: ACIIR / University of Alabama
What is an IBHS FORTIFIED Roof?
The Insurance Institute for Business & Home Safety (IBHS) was founded in 1977 by the property-casualty insurance industry to coordinate research on how homes and businesses fail in severe weather — and how to build them so they don't. For its first three decades the institute focused on research and advocacy. In 2010 it opened a $40 million research center in Richburg, South Carolina — about three hours from Myrtle Beach — where full-scale houses are tested at winds up to 130 mph, hail impacts, wind-driven rain, and wildfire embers. The data from that lab is what drives the FORTIFIED standard.
Also in 2010, IBHS released the FORTIFIED Home™ program: a voluntary re-roofing and construction standard that goes beyond the residential building code to address the specific failure modes coastal homes experience in hurricanes. The program is now recognized in 31 states, with over 70,000 homes designated nationwide. South Carolina is one of the program's strongest adopters because coastal Horry and Georgetown Counties sit in the Atlantic hurricane path.
A FORTIFIED roof is not a product — it is a system. The covering (shingles, metal, or tile) is tested and installed to rigorous wind specifications. The nails are 8d ring-shank driven in an enhanced pattern. The roof deck seams are sealed with tape or fully-adhered membrane to stop wind-driven rain from entering even if the covering is lost. A wider drip edge, an adhered starter strip, and reinforced flashing protect the most vulnerable perimeter details. A third-party IBHS-trained evaluator inspects the work mid-installation and at completion, then issues a five-year designation certificate that homeowners submit to their insurance carrier.
FORTIFIED comes in three escalating designations — Roof, Silver, and Gold — each building on the previous level to address more of the home's hurricane vulnerabilities. For most Myrtle Beach re-roofs, the entry-level FORTIFIED Roof designation is the right choice: it delivers the majority of the insurance premium savings at the lowest cost, and it fully resolves the roof-system failures that drive 70-90% of weather-related insurance claims according to IBHS research.
The Three FORTIFIED Designations Explained
Each level builds on the previous. Most Myrtle Beach projects start at FORTIFIED Roof — it carries the biggest cost-to-benefit ratio.
FORTIFIED Roof (Most Accessible)
The base designation and the one most Grand Strand homeowners choose. FORTIFIED Roof addresses the way hurricanes actually damage Myrtle Beach homes: covering blow-off followed by wind-driven rain entering through an unsealed deck. It requires a sealed roof deck, 8d ring-shank nails in an enhanced pattern across the entire deck, an adhered starter strip along eaves and rakes, a reinforced drip edge, and a covering rated for high wind performance. For most homes, this is the sweet spot — it captures the majority of the SC insurance discount without requiring window shutters or structural reinforcement.
Cost premium over a standard re-roof: roughly 10-15%
FORTIFIED Silver (Adds Opening Protection)
Silver includes everything in FORTIFIED Roof, plus protection for the home's openings and attached structures. Windows and glass doors must be impact-rated or protected with storm shutters. Entry doors must be wind-rated. Attached structures like chimneys, porches, carports, and gable-end walls must be reinforced or evaluated for hurricane resistance. Silver is the right choice for oceanfront and barrier-island homes where wind-borne debris is a real risk, and for homeowners who want to combine roof protection with whole-envelope protection in one project.
Cost premium: varies significantly based on window count and shutter selection
FORTIFIED Gold (Continuous Load Path)
Gold is the top designation and represents a structurally-engineered hurricane-resistant home. It includes everything in Silver, plus a continuous load path — an engineered chain of connections from the roof sheathing through the rafters, the walls, the floor system, and down to the foundation. Hurricane clips, anchor bolts, and engineered fasteners keep the structure tied together so that wind pressure on the roof transfers safely to the ground. Gold is most common on new construction in coastal SC or on substantial remodels where walls are open; true retrofits to Gold are rare because they require opening wall cavities.
Cost premium: best achieved during new construction or major renovation
FORTIFIED Roof Requirements (Spec Sheet)
These are the specific technical requirements every FORTIFIED Roof retrofit must meet in Myrtle Beach. Weather Shield installs to these specifications on every FORTIFIED project.
Enhanced Deck Attachment
8d ring-shank nails (not 6d smooth) driven at 6 inches on center at panel edges and 6 inches on center in the field across every sheet of roof sheathing. Ring-shank nails deliver nearly double the withdrawal strength of smooth nails. If the existing nailing pattern doesn't meet spec, the deck is re-nailed before new covering goes on.
Sealed Roof Deck
All roof-deck seams must be sealed to stop wind-driven rain from entering if the covering is lost. Options include a fully-adhered peel-and-stick membrane across the entire deck, or approved seam-tape plus a standard underlayment. IBHS research shows this detail alone can cut water intrusion by up to 95% during hurricane-force winds.
Impact & Wind-Rated Coverings
Asphalt shingles must be rated to ASTM D3161 Class F (110 mph) or ASTM D7158 Class H (150 mph). Metal systems must pass UL 580 / UL 1897 uplift tests. We install GAF Timberline HDZ with StrikeZone nailing strip — a 130 mph shingle eligible for the WindProven limited wind warranty on qualifying GAF systems.
Reinforced Edges & Starter Strip
A wider, code-plus drip edge (minimum 2-inch vertical face) is installed along all eaves and rakes. An adhered starter strip runs under the first course of shingles on both eaves and rakes — not just eaves, as is typical on standard roofs. This detail is where most hurricane blow-offs originate.
Enhanced Flashing & Penetrations
All roof penetrations — pipe boots, vent stacks, skylights, chimneys — require enhanced flashing with sealed laps and metal step flashing at walls. Ridge vents must be rated for hurricane wind pressures. Valleys must use closed-cut or woven methods compatible with the sealed-deck requirement.
Third-Party Evaluation
An IBHS-trained FORTIFIED Evaluator — independent of the roofer — inspects the job at two points: after the sealed deck is in and before the covering goes on (hidden details), and after final covering and flashing are complete. Photo documentation is uploaded to the FORTIFIED portal. The designation certificate arrives within 2-4 weeks and is what your insurance carrier needs on file.
Insurance Discounts: How SC Compares
South Carolina is one of at least five Gulf and South Atlantic states with legislated FORTIFIED insurance discounts. Under SC law, any insurer that writes wind coverage and files rates with the state must offer an actuarially justified discount, credit, or deductible adjustment for homes constructed or retrofitted to FORTIFIED Home or FORTIFIED Commercial standards. The SC Department of Insurance maintains a public list of participating carriers — as of the most recent report, 17 insurers offered FORTIFIED credits in the state, with discounts ranging from 10% to 35% off the wind portion of the premium.
The exact credit depends on three factors: the designation level (FORTIFIED Roof generally qualifies for 10-20%, Silver and Gold for higher tiers), the age of the home (new construction to FORTIFIED typically earns the largest credits), and the carrier (wind pool carriers in particular have aggressive discount schedules because FORTIFIED homes file fewer and smaller claims). Alabama's market — which has been running FORTIFIED endorsements since 2015 — reported in one published study that FORTIFIED homes represented 23% of policies but filed only 9% of claims, which is why carriers are happy to pass the savings through.
To claim your discount, your insurer will ask for the FORTIFIED designation certificate (PDF) issued by the IBHS evaluator, plus the underwriting data sheet. Weather Shield delivers both at project close. Some carriers apply the credit retroactively from the issue date; most apply it at the next renewal. If you switch carriers, the designation transfers with the home for five years, so make sure your next insurer knows about it.
Other states with FORTIFIED insurance discount laws: Alabama, Louisiana, Mississippi, North Carolina, and South Carolina all have legislated discount requirements. Georgia and Florida have carrier-specific programs but not state-mandated discounts.
FORTIFIED + SC Safe Home: Stack the Savings
Horry and Georgetown County homeowners can pair FORTIFIED with the SC Safe Home Mitigation Grant, which is administered by the SC Department of Insurance specifically to fund FORTIFIED retrofits in coastal counties. Qualifying homeowners receive between $5,000 and $10,000 toward their FORTIFIED project, depending on scope, with a 10% homeowner match. The grant funds the upfront cost; the FORTIFIED wind-premium discount then cuts your annual homeowners policy for years. The grant is competitive and seasonal — when the funding window opens, Weather Shield helps you gather documentation, lock in a FORTIFIED-compliant estimate, and submit.
Weather Shield's FORTIFIED Installation Process
Five coordinated steps from first call to designation certificate.
Free FORTIFIED Consultation
We inspect your existing roof, evaluate the deck condition and nailing pattern, confirm your address is in the SC wind zone, and estimate the FORTIFIED designation level that makes sense for your home. If the SC Safe Home grant window is open, we walk you through the application timeline.
Evaluator Assignment & Documentation
We coordinate with an independent IBHS-trained FORTIFIED Evaluator licensed to inspect in South Carolina. Project photos, material receipts, and installation details are uploaded to the FORTIFIED portal as we go, creating the documentation package that the evaluator will sign off on.
Tear-Off & Enhanced Deck Attachment
The existing covering comes off, the deck is inspected for rot or soft spots, and any replacement sheathing goes in. The entire deck is then re-nailed with 8d ring-shank nails in the FORTIFIED pattern — this is where most standard roofs fail, and it's the step that most dictates hurricane performance.
Sealed Deck, Flashing, Covering
We seal the deck with an approved method (fully-adhered membrane is our default for the Grand Strand's wind-rain exposure), install reinforced drip edge and adhered starter strip, flash all penetrations, then lay the wind-rated covering. The mid-project evaluator inspection happens between the sealed deck and the covering install.
Final Inspection & Certificate Delivery
The evaluator performs the final inspection. Within 2-4 weeks, IBHS issues the FORTIFIED designation certificate. We hand it to you along with the underwriting data sheet your insurer needs. At your next renewal — or sometimes immediately — your wind-premium discount kicks in.
Related Weather Shield Services & Resources
Frequently Asked Questions
What is an IBHS FORTIFIED roof?
A FORTIFIED roof is a re-roofing standard developed by the Insurance Institute for Business and Home Safety (IBHS) that goes beyond the South Carolina building code to resist hurricane winds and wind-driven rain. It requires a sealed roof deck, 8d ring-shank nails in an enhanced pattern, reinforced drip edge and starter strip, and impact-rated coverings. The FORTIFIED program launched in 2010 and is now recognized in 31 states with over 70,000 homes designated.
How much can I save on insurance with a FORTIFIED roof in South Carolina?
South Carolina law requires insurers that write wind coverage to offer actuarially justified discounts for FORTIFIED homes. The SC Department of Insurance reports that FORTIFIED credits range from 10% to 35% off the wind portion of the premium, with 17 insurers offering these discounts. The exact credit varies by carrier, roof age, and designation level (Roof, Silver, or Gold). Weather Shield provides the certification paperwork your insurer needs to apply the discount.
What are the three FORTIFIED designations?
FORTIFIED Home has three escalating designations: FORTIFIED Roof (the base level — sealed deck, ring-shank nails, reinforced edges, impact-rated coverings), FORTIFIED Silver (adds opening protection for windows, doors, and attached structures like chimneys and porches), and FORTIFIED Gold (adds a continuous load path from roof to foundation for whole-home hurricane performance). Most Myrtle Beach retrofits start with FORTIFIED Roof, which delivers the majority of the insurance savings at the lowest cost.
Does a FORTIFIED roof cost more than a standard roof replacement?
Yes — FORTIFIED adds roughly 10-15% to a standard asphalt re-roof because of the sealed deck membrane, ring-shank nails, and enhanced edge detailing, plus a third-party IBHS evaluator fee. In South Carolina, that premium is usually recovered within 3-7 years through wind-premium discounts, and the SC Safe Home grant can offset $5,000-$10,000 of the upfront cost for eligible Horry and Georgetown County homeowners.
Do I need to replace my whole roof to get a FORTIFIED designation?
Yes for the 'New Roof' designation — the sealed deck, ring-shank nailing, and enhanced edge details can only be installed when the covering is off. FORTIFIED is a re-roofing standard, not an overlay. IBHS also offers an 'Existing Roof' designation for homes that pass inspection without re-roofing, but this is rare because most existing roofs do not meet the fastening and sealed-deck requirements.
What nails does FORTIFIED require?
FORTIFIED requires 8d ring-shank nails (not smooth shank) installed in an enhanced nailing pattern — typically 6 inches on center at panel edges and 6 inches on center in the field of the deck. Ring-shank nails have ridged shafts that provide roughly double the withdrawal resistance of smooth nails, which dramatically reduces deck blow-off during hurricane winds. This spec applies to every sheet of roof sheathing across the entire roof.
Can I stack the SC Safe Home grant with FORTIFIED insurance discounts?
Yes. The SC Safe Home Mitigation Grant Program, administered by the SC Department of Insurance, provides $5,000-$10,000 toward FORTIFIED retrofits for qualifying coastal homeowners. Once your FORTIFIED certification is issued, you separately qualify for the 10-35% wind-premium discount through your insurer. The grant offsets the upfront cost; the discount delivers ongoing annual savings. Weather Shield helps coordinate the grant application and the FORTIFIED evaluation.
How long is a FORTIFIED certification valid?
FORTIFIED Roof designations are valid for five years from the date of issue. After five years, homeowners can recertify by having a FORTIFIED evaluator verify the roof is still intact and meeting the standard. The designation also transfers to new owners when the home is sold, which is a documented resale benefit in Grand Strand real-estate listings.
What coverings qualify for FORTIFIED?
FORTIFIED accepts several coverings as long as they meet the impact and wind ratings: asphalt shingles rated for at least 110 mph wind (Class H) and tested to ASTM D3161 Class F or ASTM D7158 Class H, standing seam and stone-coated metal systems tested to UL 580 / UL 1897, clay and concrete tile installed per FORTIFIED tile requirements, and low-slope membrane systems for commercial buildings. Weather Shield is a GAF Certified Plus™ installer, so most Myrtle Beach FORTIFIED jobs use GAF Timberline HDZ with the WindProven limited wind warranty.
How long does a FORTIFIED roof installation take?
A typical single-family FORTIFIED re-roof in Myrtle Beach takes 2-4 working days — roughly the same as a standard re-roof plus one extra day for the sealed deck and evaluator inspection. The IBHS evaluator inspects mid-installation (after the deck is sealed and before the covering goes on) and again at completion. We schedule around the evaluator to keep the project continuous. Weather conditions on the Grand Strand can extend that timeline during hurricane season, so most FORTIFIED work is booked in spring or late fall.
Ready to FORTIFY Your Myrtle Beach Roof?
Schedule a FORTIFIED consultation with Weather Shield. We'll assess your home, estimate your designation level, walk you through the SC Safe Home grant and insurance-discount options, and deliver a FORTIFIED-compliant quote — all at no charge.