How to Get TWIA Windstorm Insurance

The Texas Windstorm Insurance Association (TWIA) is the state-mandated insurer of last resort for windstorm and hail coverage in Texas coastal counties. If you own property in a designated catastrophe area, TWIA may be your only option for windstorm insurance.

But you can't just buy a TWIA policy — your property must meet specific windstorm certification requirements first.

This guide explains exactly what you need to qualify.

What Is TWIA?

TWIA provides windstorm and hail insurance to property owners in the 14 Texas coastal counties (plus parts of Harris County) designated as catastrophe areas. Private insurers often won't write windstorm coverage in these high-risk areas, making TWIA the primary option for coastal property owners.

TWIA covers:

• Windstorm damage
• Hail damage
• Wind-driven rain
• Damage from hurricanes and tropical storms

Why Windstorm Certification Is Required

TWIA requires proof that your property meets wind-resistant construction standards before issuing a policy. This proof comes in the form of a TDI windstorm certification — either WPI-8 or WPI-8E.

Without certification, TWIA will:

• ❌ Deny your insurance application
• ❌ Cancel an existing policy
• ❌ Deny windstorm claims

Which Certification Does TWIA Accept?

TWIA accepts both certification types:

WPI-8 Certification (Ongoing Construction)

Used when construction is in progress. The engineer inspects at key stages before elements are concealed. This is the preferred path — it's more reliable and typically less expensive.

WPI-8E Certification (Completed Construction)

Used for existing structures that were completed without WPI-8 inspection. The engineer verifies compliance retroactively through accessible inspection and documentation review.

When Do You Need Certification for TWIA?

You need windstorm certification for TWIA when:

1. New construction — Any new building in a designated windstorm area
2. Re-roofing — Replacing the roof covering or deck
3. Additions — Adding square footage to an existing building
4. Major remodeling — Structural changes that affect wind resistance
5. Buying a property — The property must have valid certification for TWIA coverage
6. Policy renewal — TWIA may require updated certification at renewal
7. After storm damage — Repairs must be certified to maintain coverage

Step-by-Step: Getting TWIA Insurance

Step 1: Confirm You're in a TWIA-Eligible Area

TWIA serves properties in designated catastrophe areas along the Texas coast:

• Cameron, Willacy, Kenedy, Kleberg, Nueces, San Patricio, Aransas, Refugio, Calhoun, Matagorda, Brazoria, Galveston, Chambers, Jefferson counties
• Parts of Harris County

Check your property designation at the TDI website or call us to confirm.

Step 2: Obtain Windstorm Certification

Before applying for TWIA, ensure your property has a valid WPI-8 or WPI-8E certification:

• If construction is ongoing: Schedule a WPI-8 inspection immediately
• If construction is complete: Request a WPI-8E retroactive certification
• If you have existing certification: Verify it's current and covers any modifications

Step 3: Apply for TWIA Coverage

Once you have certification:

1. Contact a TWIA-licensed insurance agent
2. Submit your certification documents
3. Complete the TWIA application
4. Pay your premium
5. Coverage typically begins after the binding process (allow 1-2 weeks)

Step 4: Maintain Certification

Keep your certification current by:

• Getting new certification for any structural modifications
• Re-certifying after re-roofing
• Keeping all documentation organized
• Responding to any TWIA certification requests at renewal

Common TWIA Denial Reasons

1. No Certification

The most common denial reason. If your property has no WPI-8/WPI-8E certification, TWIA will not issue a policy.

2. Expired or Invalid Certification

Certification that doesn't cover recent modifications (re-roofing, additions) may be considered invalid.

3. Uncertified Modifications

If you've made changes to your property (new roof, addition, remodel) without new certification, your existing TWIA policy may be voided.

4. Non-Compliant Construction

If the inspection reveals that your property doesn't meet wind resistance standards, certification will be denied until corrections are made.

What If My Property Doesn't Pass Certification?

If your property fails the windstorm inspection, you'll receive a detailed report of what needs to be corrected. Common corrections include:

• Installing hurricane straps at roof-to-wall connections
• Replacing non-compliant roof deck fasteners (staples → nails)
• Installing impact-rated windows or storm shutters
• Reinforcing gable end walls
• Replacing damaged roof deck material

Once corrections are made, we'll re-inspect and issue certification.

Cost of TWIA Insurance

TWIA premiums vary based on:

• Property value and replacement cost
• Location (wind zone)
• Construction type and age
• Deductible selected
• Certification status

Contact a TWIA-licensed insurance agent for specific premium quotes.

Don't Wait — Get Certified Before You Need Coverage

The worst time to discover you need windstorm certification is after a storm hits. By then, it's too late — TWIA won't issue a policy for a property that's already damaged.

Get certified before storm season and maintain your certification to ensure uninterrupted coverage.

Call (888) 293-3162 to schedule your windstorm certification today. Standard service is 14 days; rush service is 5 days.

Frequently Asked Questions

Can I get TWIA insurance without certification?

No. Windstorm certification is a mandatory requirement for TWIA coverage. Without it, your application will be denied.

How long is the certification valid for TWIA?

Certification is valid for the life of the certified improvements, as long as no significant modifications are made. If you re-roof, remodel, or add to the structure, you'll need new certification.

Does TWIA cover windstorm damage if I'm not certified?

No. If your property isn't certified, TWIA will deny windstorm claims. Certification is a condition of coverage.

Can I switch from private insurance to TWIA?

Yes, but you must have valid windstorm certification. If your property was built without certification, you'll need a WPI-8E inspection before TWIA will issue a policy.

What if I'm buying a property without certification?

You should require the seller to obtain WPI-8E certification before closing, or factor the cost and risk of certification into your purchase offer. Without certification, you cannot obtain TWIA coverage.