FORTIFIED Roof Parts on a Metal Roof
Sealed Roof Deck
If a storm strips the metal off, the deck is the last thing between the rain and the ceiling. IBHS testing found that every inch of rain landing on a bare deck can let in about nine bathtubs of water through the seams, and that sealing those seams cuts the intrusion by up to 95%. The usual method is a 4-inch strip of self-adhered ASTM D1970 membrane over every deck joint, or that membrane over the whole deck; the 2018 IRC lists both as high-wind underlayment options.
Ring-Shank Nailing and Locked-Down Edges
Wind damage often starts at an edge and peels inward. FORTIFIED answers in two ways. The deck is re-nailed or nailed new with 8d ring-shank nails at closer spacing; IBHS says that change alone can double the uplift a roof deck withstands. Then the eaves and rakes get a wider drip edge so wind can't get a grip under the first course. Attic vents have to be rated to resist wind and wind-driven rain, so a standard ridge vent may need swapping for a tested one.
Wind-Uplift-Rated Metal Assemblies
Metal roofs are tested for wind with UL 580 and then UL 1897. UL 580 sorts assemblies into Class 30, 60 and 90, which hold a maximum static uplift of 45, 75 and 105 pounds per square foot. FORTIFIED wants documentation certifying the assembly's design pressure from both tests, through a state product approval or an evaluation report, and it wants that rating matched to the design pressures at your specific site. The rating covers the panel, clip, fastener and deck together. Change the clip spacing or the deck and the paper may no longer apply.
Class 4 Hail-Rated Panels
UL 2218 drops steel balls on the product: 1.25 inches for Class 1, 1.50 for Class 2, 1.75 for Class 3 and 2.00 inches for Class 4. A metal panel passes if no crack shows on its back after two hits in the same spot, so a Class 4 panel can still dent. Class 4 is required only for FORTIFIED's optional Hail Supplement. IBHS also notes that these tests are run on new product and don't account for weathering or aging. Denting and what insurers make of it are covered on metal roof hail damage.
The FORTIFIED Roof Designation
A current certificate is generally what an insurer asks for before giving any FORTIFIED discount. Roofers who offer FORTIFIED agree to have the work reviewed and documented by a certified FORTIFIED evaluator, and IBHS then issues a certificate to the property address with its own ID number. It is valid for five years and transfers with the house when you sell.
Why Jackson homeowners call Jackson Metal Roofing Pros
- One independent metal roofer gets your request, not a call list
- A free measure, deck check and written estimate
- Ask for panel system, gauge and paint finish in writing
- The roofing permit is part of the scope: ask who pulls it
- No charge to the property owner for the referral
FORTIFIED Roof Grants and Discounts From Jackson's Side of the State
The state money is real, but it starts on the coast:
Grants
Strengthen Mississippi Homes pays up to $10,000 toward a FORTIFIED Roof. From July 1, 2026, the Mississippi Insurance Department is running it for Mississippi Windstorm Underwriting Association (MWUA) policyholders only; the department says other homeowners will be eligible in a statewide rollout it expects in early 2027.Funding snag
The department's June 2026 release says a typo in House Bill 1911 leaves it without spending authority for the statewide money until the Legislature reconvenes.Wind pool
MWUA exists to write windstorm and hail coverage in the Coastal Area of Mississippi. Its FORTIFIED discounts (20% for FORTIFIED Roof, 25% for Silver, 30% for Gold) apply to its own coastal policies.Required discount
The state law requiring premium adjustments for hurricane-mitigation retrofits on homes names Harrison, Hancock, Jackson, Stone and Pearl River counties. That "Jackson" is Jackson County on the Gulf Coast, not the city. Hinds County isn't on the list.
So for a house in the City of Jackson today, a FORTIFIED certificate is not tied to a grant or a mandated discount. Before you pay for the extra steps, ask your own insurer, in writing, what the certificate would change on a Hinds County policy.
FORTIFIED Roof Weather Case in Hinds County
Around Jackson the case for building past code rests more on hail and thunderstorm wind than on hurricanes. NOAA's storm records show Hinds County gets hail in most years and hundreds of damaging-wind reports over two decades; the counts and the named storms are on metal roof hail damage. The deck seal is the part that pays off when a storm does tear some metal loose, because the ceilings stay dry.
FORTIFIED Roof Questions for the Roofer and Evaluator
Experience
Has the roofer completed FORTIFIED jobs, and which evaluator will document this one?Timing
Will the evaluator inspect the deck nailing and seam sealing before the underlayment and panels cover them?Uplift paperwork
The UL 580 and UL 1897 documentation for the exact panel, clip and deck being quoted, and the design pressure it meets.Hail listing
If you want the Hail Supplement, the UL 2218 Class 4 listing for that exact product and color.Vents
Which wind- and rain-rated vent replaces the old ridge or box vents.Paperwork at the end
A copy of the certificate with its FORTIFIED ID number, for your insurer.
How the job fits into a full tear-off is on metal roof installation.