Wind-Driven Rain Coverage - FAIA (2024)

Wind-Driven Rain Coverage - FAIA (1)Invariably, it seems as if as quickly as the hurricane force winds stop blowing the claims denials start blowing in citing what insurance professionals refer to as “wind-driven rain.” While “wind-driven rain” is not a defined term in insurance policies, there is wording in the Insurance Services Office (ISO) homeowners policies and commercial property policies speaking to coverage.

An actual example illustrates the concept of what wind-driven rain is. In 2004, Hurricane Frances hit Vero Beach, where my parents live. Frances was a very “wet” storm and it moved very slowly. For more than 12 hours, Frances brought winds of around 100 miles per hour to the Vero Beach area. Amazingly, my parents’ house suffered no structural damage at all. The back of their house is a room about 25 feet by 25 feet with a pool table, piano, organ, furniture, and carpet over about 50 percent of the floor. The windows are divided into the top two thirds that are built in glass, while the lower one third are jalousie windows that have a handle crank used to open them. The windows have rubber seals around the edges that are designed to keep water out when the windows are closed. The house was built in 1968 and I suspect the windows and rubber seals are original.

I was in Vero Beach and we rode the hurricane out at a different location, a structure we felt was more hurricane resistant. Once the winds had died down to a safe level, I went to the house to check on damage. While there was no damage visible, the room on the back of the house had about one quarter inch of water on the floor; the carpet was soaked. Water had also dripped down the lower part of the wall and the baseboards were wet.

I was able to remove the carpet, dry out the floors with towels, and dry out the furniture. The damage was almost insignificant. Using a generator, we set up fans to dry everything out and within 24 hours all was well.

Situations like that are, unfortunately, not always the case. Significant water damage can take place in situations like this, especially in multi-story buildings. The cause of the interior water was, in my view, the force of wind pushing water against aged windows for over 12 hours. The wind had not created an opening, such as blowing out a window thus allowing water to enter.

With damage such as this, coverage turns to a homeowners policy or a commercial property policy. It’s critical that each individual policy be analyzed for coverage. Certainly, ISO has forms that some insurers use, but a significant number of insurers use endorsem*nts that change coverage. This analysis focuses only on ISO forms. It is entirely possible that coverage for wind-driven rain is different during a hurricane than similar damage not during a hurricane. For an article by The Merlin Law Group addressing this issue (citing a Florida court case where the exclusion was upheld) see “Wind-Driven Rain Versus Wind-Created Opening in a Building and Potential Coverage Implications.” Another good article, written by IRMI, is “When Applying the Limitation for Wind-Driven Rain, What Constitutes a Roof?

Looking at the “industry standard” HO-3 policy, Coverages A and B are open peril. (Referred to casually as “all risk.”) Coverage C is named peril. Under the HO-6, all coverages are named peril but it’s almost always the case that the policy is endorsed to convert Coverage A to open peril.

For Coverages A and B, with open peril coverage there is no exclusion for damage from wind-driven rain. Under Coverage C, however, the policy states this:

B.Coverage C – Personal Property

We insure for direct physical loss to the property described in Coverage C caused by any of the following perils unless the loss is excluded in Section I – Exclusions.

2.Windstorm Or Hail

This peril includes loss to watercraft of all types and their trailers, furnishings, equipment, and outboard engines or motors, only while inside a fully enclosed building.

This peril does not include loss to the property contained in a building caused by rain, snow, sleet, sand or dust unless the direct force of wind or hail damages the building causing an opening in a roof or wall and the rain, snow, sleet, sand or dust enters through this opening.

Note, specifically, the requirement that an opening must be created by wind. IRMI commentary provides this discussion:

The HO 3 only covers loss from rain, snow, sleet, sand, or dust to personal property inside a building under limited circ*mstances. Specifically, the direct force of wind or hail must first damage the building and cause an opening in a roof or wall. Then, the rain, snow, sleet, sand, or dust must come through that opening into the house, damaging the personal property. So, if Mary's home is hit by a large hailstorm that breaks several windows, and the ensuing rain enters the dwelling, rain damage to the personal property is covered. Conversely, if Mary inadvertently leaves a window up in her house that results in substantial water damage to her contents due to the storm, there is no coverage for her personal property. The opening through which the rain came was not caused by wind or hail. However, any damage to the dwelling (walls, ceiling, or wall-to-wall carpet) is covered under the open perils coverage applicable to the dwelling.This exclusion may also eliminate coverage for damage to the personal property of a building when, for example, the force of a hurricane or other severe storm causes rain to enter the building even when the roof, doors, and windows withstand the storm. It is possible that wind could blow hard enough to force water through the cracks in a home, without ever creating "an opening."

In the example of my parents’ house, no opening was created by the wind, so Coverages A and B would apply, but for the personal property under Coverage C the policy does not provide coverage. Remember, this is a standard ISO form.

It is very common, however, that insurers routinely use an endorsem*nt (Commonly a “special provisions” endorsem*nt) to modify Coverages A and B to track Coverage C so that an opening must be created for any coverage to apply. Further, the ISO “calendar year hurricane endorsem*nt” (HO 03 51 05 13) states this:

A. Loss By Windstorm During A Hurricane

With respect to Paragraphs B. and C., coverage for loss caused by the peril of windstorm during a hurricane which occurs anywhere in the state of Florida includes loss to:

1. The inside of a building; or

2. The property contained in a building caused by:

a. Rain;

b. Snow;

c. Sleet;

d. Hail;

e. Sand; or

f. Dust;

if the direct force of the windstorm damages the building, causing an opening in a roof or wall and the rain, snow, sleet, hail, sand or dust enters through this opening.

Under the ISO dwelling program, the DP-3 is the broadest policy. Like the HO-3, the DP-3 is open peril for Coverages A and B while Coverage C (if purchased) is named peril. Therefore, wind-driven rain would be covered for building damage but not for personal property.

Again, it’s critical to read each specific policy. The problem often surfaces where two neighbors have policies with different insurers, and one neighbor has coverage for wind-driven rain while the other does not.

One final note on the homeowners policy, relating to the HO-5 policy. Some insurers use this form which changes Coverage C from named peril to open peril. Under such policy, Coverage C provides coverage for wind-driven rain.

Looking at the ISO commercial property program, the most common policies used are the CP 00 10 – Building and Personal Property Coverage Form and the CP 00 17 – Condominium Association Coverage Form. Both forms are typically constructed with the CP 10 30 – Special Causes of Loss form. In the CP 10 30, there is no “exclusion” per se, for wind-driven rain.However, such damage is still not covered, due to the following wording in the Limitations provision:

C. Limitations

The following limitations apply to all policy forms and endorsem*nts, unless otherwise stated.

1. We will not pay for loss of or damage to property, as described and limited in this section. In addition, we will not pay for any loss that is a consequence of loss or damage as described and limited in this section.

c. The interior of any building or structure, or to personal property in the building or structure, caused by or resulting from rain, snow, sleet, ice, sand or dust, whether driven by wind or not, unless:

(1) The building or structure first sustains damage by a Covered Cause of Loss to its roof or walls through which the rain, snow, sleet, ice, sand or dust enters; or

(2) The loss or damage is caused by or results from thawing of snow, sleet or ice on the building or structure.

This “limitation” would apply for both building coverage and “your business personal property.” It is not uncommon, especially in residential condominium association policies, that insurers provide coverage for wind-driven rain. Some agents use that coverage enhancement as a sales tool.

As stated earlier, it’s critical to review each policy. Where wind-driven rain is not covered by the policy, agency management should consider an agency practice relating to notifying customers of this limitation.

Copyright FAIA, October 2017.

Wind-Driven Rain Coverage - FAIA (2024)

FAQs

Wind-Driven Rain Coverage - FAIA? ›

Windstorm Or Hail

What is wind-driven rain coverage? ›

Therefore, if the wind and rain induce damage, this is generally covered on your home insurance policy. However, the "wind-driven rain" stipulation may be utilized if your insurance agent discovers that your residence essentially led to the deterioration caused by the storm.

Is wind-driven rain covered by homeowners insurance in Florida? ›

In most cases, homeowners insurance covers wind-driven rain damage to your roof if caused by a covered peril, such as a windstorm. However, coverage may be limited or excluded if the damage is due to wear and tear, lack of maintenance, or gradual deterioration.

What is the meaning of wind-driven rain? ›

Wind-driven rain is the sudden and temporary entry of rain, snow, sleet or ice pushed into a building by wind. The water is pushed into the building without causing any exterior damage.

What is the difference between wind-driven rain and flooding? ›

In general, unlike wind-driven rain, damage by rising water requires flood insurance. Both rising water from a “flood” and rain water (whether driven by wind or not) can cause damage to the same structure during the same storm event. Heavy rainfall can cause rising water.

How do you calculate wind driven rain? ›

It is based on the well-known semi- empirical driving rain relationship (driving rain intensity = coefficient * wind speed * horizontal rainfall intensity).

Can a wind-driven rain roof leak? ›

Your roof is designed to shed water downward, not from the side. A wind driven rain at the perfect angle can create leaks your roofing system isn't designed to prevent like in the picture below. You most likely have a leak caused by wind driven rain if your roof does not leak in every rain storm.

How to stop wind-driven rain? ›

Extend eaves off the roofs to direct rainwater several feet from the face of the building. Install recessed windows so that the exterior walls deflect water away from the windows. Install working shutters that when closed; protect the windows from wind-driven rain.

Do I need wind coverage in Florida? ›

Like homeowners insurance, wind insurance isn't required by the State of Florida. However, it's often required by mortgage lenders, particularly in coastal areas. Windstorms that accompany hurricanes, along with tropical storms, strong winds and tornadoes, are hazards for Florida homeowners.

What is the average cost of wind insurance in Florida? ›

Windstorm Insurance Cost in Florida

The average cost for a windstorm insurance policy in Florida is between $1,000 and $2,000 per year.

What defines wind driven? ›

Adjective. wind-driven (not comparable) (of ventilation) Occurring with the presence of a wind, although a rotary wind-driven ventilator on a vehicle can also be activated by movement of the vehicle.

What is the wind driven process? ›

Wind driven circulation describes the process in which winds moving along the surface of the ocean push the water in their direction and create currents near the surface. These winds are subject to the Coriolis Effect, which creates their motion based on the rotation of the earth.

What is the difference between wind and rain? ›

The winds are the horizontal motion of air that travels from high pressure towards lower pressure. These winds are also responsible for causing storms. Rainfall can be described as the quantity of water falling to the ground in a given period at a given place.

What category of water is wind driven rain? ›

Sources for category 3 water include, but are not limited to, sewage; flooding from rivers or streams; Wind driven rain, water from beyond the toilet trap; water from the toilet bowl with feces; and standing water that has begun to support microbial growth.

What is heavy rain with wind called? ›

A thunderstorm is a storm with thunder and lightning and usually very heavy rain. A hurricane has very strong winds and begins at sea. A monsoon is a period of very heavy rain in particular countries, or the wind that brings this rain. A cyclone and a typhoon are types of violent tropical storms with very strong winds.

What is the wind driven storm surge? ›

Storm surge is produced by water being pushed toward the shore by the force of the winds moving cyclonically around the storm. The impact on surge of the low pressure associated with intense storms is minimal in comparison to the water being forced toward the shore by the wind.

How do you fix wind driven rain? ›

Extend eaves off the roofs to direct rainwater several feet from the face of the building. Install recessed windows so that the exterior walls deflect water away from the windows. Install working shutters that when closed; protect the windows from wind-driven rain.

How can we protect against wind driven rain? ›

It is also a good idea to waterproof the exterior, and seal it with water-resistant paint that can protect your building against water damage. Vents, electrical outlets and other openings should be caulked and sealed while external drains, gutters, etc. should be cleaned and maintained regularly to prevent clogging.

What is the difference between hurricane and windstorm coverage? ›

Most property insurance covers wind-related damages from hurricanes under the broader category of “windstorm.” Wind coverage may be excluded if you live in a coastal area at high-risk for tropical storms and hurricanes. Standard insurance policies do not cover flooding, including storm surge flooding.

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