In the Florida insurance landscape of February 2026, “mitigation” is the new currency. While the market is finally seeing a reprieve—with average statewide rate decreases of nearly 9%—savvy homeowners in Martin and St. Lucie Counties are stacking additional discounts to save even more.
The biggest winner this year? Secondary Water Resistance (SWR). Thanks to the newly enacted HB 767, insurers are now required to provide explicit notices of “enhanced discounts” for roof systems that utilize these water-sealing barriers. For many Treasure Coast residents, this translates to an immediate 10% to 15% reduction in the windstorm portion of their premium.
1. What is SWR (Secondary Water Resistance)?
Often called “Peel-and-Stick,” SWR is a self-adhering polymer-modified bitumen barrier applied directly to your roof deck before the shingles or tiles go on.
The “Barrier” Effect: If a hurricane rips your shingles off, the SWR acts as a secondary skin, preventing water from pouring into your attic and causing a total loss.
The 2026 Requirement: Under the latest building code updates and SB 1706, SWR is increasingly recommended (and often funded by state grants) as the gold standard for moisture defense.
2. Treasure Coast “Savings Hotspots”
Based on recent My Safe Florida Home grant distributions and new 2026 construction permits, these neighborhoods are leading the way in insurance savings:
Tradition & PGA Village (Port St. Lucie): Many of the newer builds (post-2023) in neighborhoods like Manderlie and Cadence already have SWR included. Residents here are seeing some of the lowest “wind-risk” ratings in the county.
Sewall’s Point & Hutchinson Island: High-end remodels in these coastal zones are prioritizing SWR to combat salt-air intrusion and high-velocity wind zones, qualifying them for the maximum available credits.
Palm City (Floridian & Hidden Bridge): Custom estates are utilizing “closed-cell foam” or peel-and-stick membranes to protect high-value interiors, often leading to premium cuts of $1,000+ per year.
3. The 2026 “Enhanced Discount” Law (HB 767)
Effective July 1, 2026, insurance companies must now notify you if they offer an “enhanced” discount for SWR. This is a massive win for homeowners who previously had these features but weren’t receiving the proper credit on their OIR-B1-1802 (Wind Mitigation Form).
4. How to Verify Your Discount
Don’t assume your agent has this on file. To claim your 15% savings, follow this 2026 checklist:
Check Your Underlayment: If you replaced your roof after 2022, check your contract for “self-adhered underlayment.”
Update Your Inspection: A Wind Mitigation Inspection costs roughly $150–$250 but can pay for itself in two months through premium savings.
Share the Report: Forward the “SWR-verified” report to your carrier. Under the new law, they must apply the credit to your next renewal.
Treasure Coast Savings Comparison (2026 Averages)
| Neighborhood Type | Feature | Est. Annual Savings |
| New Construction (PSL) | Built-in SWR Barrier | $600 – $900 |
| Coastal Remodel (Stuart) | Retrofitted Peel-and-Stick | $1,200 – $1,800 |
| Older Home (Un-mitigated) | Standard Underlayment | $0 Discount |
Conclusion: Making the Move to Mitigation
In 2026, a roof isn’t just about keeping the rain out; it’s about keeping your insurance costs down. The “Insurance Discount Map” shows a clear trend: the neighborhoods that invest in Secondary Water Resistance are the ones thriving in a volatile market. If you’re planning a roof replacement or shopping for a new home in Martin or St. Lucie County, ensure SWR is on the top of your list.