Hail test square

Count hits in a 10×10 test square vs. threshold.

Quick check of the 10 ft × 10 ft (100 SF) hail test-square method: count functional damage hits/bruises in the square and compare to the replacement threshold.

Inputs

Hits in test square

Functional damage / bruises in one 10×10 square.

Threshold

Hits required to indicate replacement.

Result

Enter values above to calculate.

Hail test-square method


Test square	10 ft × 10 ft = 100 SF
Count	Functional damage / bruises / fractures within the square
Common threshold	~8–10 hits per square

Thresholds vary by carrier, manufacturer, and HAAG guidelines — confirm the applicable guideline.