A small section of roof opened to expose what lies beneath the shingles — and one of the most important tools for proving hidden damage in a roof insurance claim.
Table of Contents
- What a Test Square Is
- When Test Squares Are Used
- What a Test Square Reveals
- Test Squares in Insurance Claims
- Why Location Matters
- Documentation Requirements
- When to Request a Test Square
- Common Questions
- How Claim Advocacy Helps
- Related Glossary Terms
What a Test Square Is
A test square is a controlled section of roof — typically 10 ft × 10 ft (100 square feet) — where shingles are removed to inspect the underlayment and decking beneath.
It is the only way to confirm what cannot be seen from the surface.
On older Colorado roofs, subsurface damage is often more significant than what is visible on top.
When Test Squares Are Used
Adjuster-Requested Test Squares
Used when damage is unclear or disputed.
- Helps determine causation
- Supports approve vs. deny decisions
Contractor-Recommended Test Squares
Used proactively when hidden damage is suspected.
- Strengthens claim documentation
- Provides evidence before final scope
The reason the test square is opened matters for how it affects your claim.
What a Test Square Reveals
Underlayment Condition
- Tears, brittleness, separation
- Loss of water barrier function
Decking Damage
- Rot, swelling, delamination
- Moisture intrusion from storm events
Skip Sheathing Gaps
- Gaps exceeding code → requires overlay
Fastener Issues
- Pulled, corroded, or misdriven nails
Water Infiltration Evidence
- Staining, mold, biological growth
This is where concealed damage becomes provable.
Test Squares in Insurance Claims
Test squares directly affect claim outcomes:
- Confirm storm-related damage
- Expand Scope of Loss
- Trigger Supplemental Claims
No test = no proof of hidden damage.
No proof = no additional payment.
Why Location Matters
The test square must be representative of the most damaged area.
- Low-damage area → minimal findings
- High-impact area → significant findings
You can request:
- Different location
- Multiple test squares on larger roofs
Where you open the roof determines what you prove.
Documentation Requirements
Everything must be documented before repair:
- Wide and close-up photos
- Measurements of damaged areas
- Written notes on condition
- Timeline of discovery
Once the roof is closed, the evidence is gone.
No documentation = no supplement.
When to Request a Test Square
- Claim is denied for “insufficient damage”
- Roof has history of leaks
- Older home (pre-1980s) likely has skip sheathing
- Soft spots or deflection felt on roof
- Estimate appears incomplete
This is often the turning point in disputed claims.
Common Questions
Who pays for a test square?
Typically insurance pays if damage is found; homeowner may pay if not.
Can the adjuster require one?
Yes — under cooperation clauses, but you can document everything.
How much does it cost?
Usually a few hundred dollars depending on complexity.
How many should be done?
Depends on roof size and variability — more may be needed.
How Claim Advocacy Helps
- Location selection — identifying best test areas
- On-site documentation — capturing all findings
- Code identification — recognizing upgrade triggers
- Supplement preparation — converting findings into payment
- Carrier coordination — managing response
Related Glossary Terms
A test square is one of the most important tools in a roof insurance claim. It turns assumptions into evidence and reveals damage that cannot be seen from the surface. When used correctly, it can be the difference between a denied claim and a fully funded roof replacement.
📞 (719) 210-8699
📧 gerald@winik.io