Weather-Related Losses

How Much Do Weather Events Cost the Construction Industry?

Weather-related losses are the most unpredictable and least controllable risk that contractors face. NOAA data shows that the United States sustains approximately $92 billion in annual weather losses across all industries, and construction bears a disproportionate share because the work happens outdoors, on exposed structures, with materials stored in the open.

For contractors specifically, weather causes approximately 35% of all construction project delays and generates an average claim of $150,000 when physical damage occurs. Unlike other construction risks where safety programs and training can reduce frequency, weather events strike without regard for how well you manage your operation.

The insurance challenge with weather losses is that multiple coverage lines may apply — or none may apply — depending on the specific event, the property damaged, and the phase of construction. Understanding which policy responds to which weather scenario is critical before the storm hits, not after.

What Does Builders Risk Cover During Construction?

Builders risk insurance is the primary coverage for weather damage to structures under construction. It protects the building, installed materials, and materials stored on site from covered perils including wind, hail, fire, lightning, and (with specific endorsement) flood.

Builders risk is a project-specific policy that begins when construction starts and terminates when the project is completed and the permanent property insurance takes over. The policy covers the building at its current stage of completion — meaning coverage increases as the project progresses and more value is installed.

Builders risk covers the structure under construction and installed materials — but it typically does not cover your tools, equipment, or temporary structures. A storm that destroys both the building and your equipment creates two separate claims under two different policies.

Key Builders Risk Considerations for Weather

• Wind and hail: Standard builders risk covers wind and hail damage, but policies in hurricane-prone and tornado-prone regions may carry separate wind/hail deductibles of 2-5% of the project value — significantly higher than the standard deductible.
• Flood: Standard builders risk excludes flood damage. A separate flood endorsement or standalone flood policy is required for projects in flood-prone areas.
• Soft costs: Extended project timelines from weather damage generate additional general conditions, financing costs, and overhead expenses. A soft costs endorsement covers these indirect losses.
• Materials in transit: Materials being delivered to the site may require separate inland marine or transit coverage — builders risk typically covers materials only after they arrive on site.

Wind Damage to Open Structures — When Are You Most Vulnerable?

The most dangerous phase of construction from a weather perspective is when the structure is framed but not enclosed. Open walls, incomplete roof systems, and temporary bracing create a structure that is highly vulnerable to wind loads it was never designed to resist in its incomplete state.

A fully sheathed and roofed building can resist 90+ mph winds in most structural designs. That same building with three walls framed and no roof sheathing can experience structural failure at 45-60 mph winds — speeds that occur in ordinary thunderstorms, not just hurricanes or tornadoes.

Contractors managing construction schedules should prioritize getting structures enclosed as quickly as possible. Every day a building sits in an open-frame condition extends the window of maximum weather vulnerability.

Flood Exclusions — The Gap That Catches Contractors Off Guard

Standard commercial property policies, general liability policies, and even most builders risk policies exclude flood damage. This exclusion applies to rising water from any source — rivers, storm surge, surface water accumulation, and groundwater intrusion. The only coverage for flood damage comes from specific flood insurance policies, either through the National Flood Insurance Program (NFIP) or private flood carriers.

The standard flood exclusion in commercial policies applies regardless of flood zone designation. A project outside the 100-year floodplain is still excluded from coverage if surface water from a severe storm floods the site. Flood coverage must be purchased separately for any project where water accumulation is possible.

For contractors, flood exposure extends beyond the building itself. Materials stored at grade level, temporary electrical systems, and excavations that fill with water all create loss scenarios that the flood exclusion blocks from recovery under standard policies.

What does a real claim scenario look like? Hailstorm Damages Stored Roofing Materials

A sudden hailstorm struck a commercial roofing project site where the contractor had $180,000 in roofing materials stored in the parking lot — including architectural shingles, single-ply membrane rolls, and metal flashing. The hail also damaged a partially completed roof section on the building.

Claim Breakdown

• $180,000 — Stored roofing materials destroyed by hail. The contractor’s inland marine policy covered materials stored at the job site, but the builders risk policy did not cover materials that had not yet been installed.
• $65,000 — Damage to the partially completed roof section. The builders risk policy covered this as damage to the structure under construction.
• $28,000 — Project delay costs including extended general conditions and subcontractor rescheduling. Not covered — the builders risk policy did not include a soft costs endorsement.
• $273,000 — Total loss

The contractor recovered $180,000 under inland marine (after a $5,000 deductible) and $65,000 under builders risk (after a $10,000 deductible). The $28,000 in delay costs was unrecoverable because the builders risk policy lacked soft costs coverage. Adding that endorsement would have cost approximately $1,200 for the project duration.

Material Protection and Storage Best Practices

Weather damage to stored materials is one of the most preventable categories of construction loss. Simple protection measures dramatically reduce exposure:

• Elevated storage: Store all materials on pallets or dunnage to prevent water damage from surface runoff and standing water
• Covered storage: Use tarps, temporary shelters, or enclosed containers for weather-sensitive materials. Drywall, insulation, and ceiling tile absorb water and become total losses from even moderate rain exposure.
• Staged delivery: Schedule material deliveries to align with installation timelines. Storing $200,000 in materials on site for weeks creates unnecessary weather exposure — order in smaller quantities timed to installation.
• Weather monitoring: Track forecasts actively and implement material protection protocols when severe weather is expected within 48 hours
• Documentation: Photograph material storage conditions daily. Carriers evaluate storage practices when adjusting weather damage claims — poor storage can reduce payouts.

Prevention Strategies That Reduce Weather Claim Severity

You cannot prevent weather events, but you can reduce their financial impact through preparation and proper insurance structure.

• Builders risk soft costs endorsement: Covers the indirect costs of weather delays. Add this to every project — the premium is minimal relative to the exposure.
• Flood coverage evaluation: Assess flood exposure on every project regardless of flood zone designation. Surface water flooding occurs outside mapped flood zones regularly.
• Temporary bracing standards: Implement wind bracing standards for open structures that exceed minimum code requirements. The additional bracing cost is a fraction of a structural failure claim.
• Emergency response plan: Maintain a written plan for severe weather response including material protection, site securing, and post-storm damage assessment procedures.

Weather-Related Losses by Industry

• Staffing Agencies — Weather-Related Losses
• Structural Steel Contractors — Weather-Related Losses
• Temp Staffing Companies — Weather-Related Losses
• Towing Companies — Weather-Related Losses
• Tree Service Companies — Weather-Related Losses
• Trucking Companies — Weather-Related Losses
• Restaurants — Weather-Related Losses
• Tunneling Contractors — Weather-Related Losses

How does Coverage Axis approach Weather Risk?

We evaluate weather exposure across your entire operation — builders risk, inland marine, commercial property, and flood — to identify gaps before a weather event exploits them. Our assessment covers your project locations, construction phases, material storage practices, and current policy structure.

Weather losses are inevitable in construction. Gaps in your coverage are not. Contact Coverage Axis for a weather risk evaluation and coverage program that protects your projects from the exposures your current policies may be missing.