Guide: How to Read Your Roof Report (Example)
Important Note:
The data below is taken from a Sample GAF Measurement Report. Kodiak uses industry-leading roof measurement tools, including GAF QuickMeasure, to help prepare replacement proposals. The report shows measurable quote inputs and separates them from conditions that still need confirmation.
1. Length Measurements: The "Skeleton" of Your Roof
What This Is
A map of every linear foot of your roof’s edges and junctions, including eaves, ridges, and valleys.
Sample Data: This sample roof requires 530 feet of drip edge.
Impact on Your Quote
Every linear foot of drip edge, valley, or hip requires specific metalwork and labor. A high number here (like the 530 ft in this example) means a larger investment in perimeter protection to prevent rotting wood and fascia damage.
2. Pitch & Steepness: The "Safety & Labor" Factor
What This Is
The angle (steepness) of each roof surface.
Sample Data: While the main pitch is 8/12, 21% of this roof is a very steep 16/12.
Impact on Your Quote
Steeper roofs require specialized safety harnesses, staging, and significantly more labor time because workers cannot walk on them freely. If your report shows a high percentage of "Vertical" pitches (like the 16/12 here), your labor cost will be higher than a standard flat-pitched roof.
3. Roof Facets: The "Complexity" Score
What This Is
The total number of individual planes that make up your roof.
Sample Data: This complex roof has 36 distinct facets.
Impact on Your Quote
A "36-facet" roof is highly complex. Each facet requires a junction—a valley, ridge, or hip—which can affect flashing, water-shedding details, labor, and waste planning. High complexity means the quote should account for precision flashing and waterproofing intersections upfront.
4. The Summary Table: No More Guesswork
What This Is
A consolidated "Bill of Materials" that tracks every single piece of hardware needed.
Sample Data: This report tracks exactly 115 pieces of step flashing.
Impact on Your Quote
When these counts are vague, quotes can miss important scope inputs. Tracking items down to the piece (like the 115 flashing pieces here) helps the proposal document material quantities and identify conditional items before the project begins.
5. Waste Factor: Planning for Perfection
What This Is
The extra material needed to account for overlapping shingles and cutting around gables or chimneys.
Sample Data: For this 36-facet sample roof, the report shows a 20% waste factor.
Impact on Your Quote
Complexity creates waste because shingles must be cut around facets, hips, valleys, and transitions. In this sample report, the higher waste factor reflects measured roof complexity and helps the proposal account for material planning before the project begins.
6. Ventilation: The "Longevity" Engine
What This Is
The airflow system (Static or Powered) that keeps your attic cool and prevents shingle "cooking."
Sample Data: With a total area of 6,445 sq ft, this roof requires significant airflow.
Impact on Your Quote
Net Free Area calculations use roof and attic context to compare ventilation options. For larger or more complex roofs, the right ventilation scope can affect heat, moisture, and shingle-performance planning, but savings and performance depend on the home, installation, and system design.