Roof Area & Geometry Calculator
1. Select Roof Architecture Style
Gable Roof
Hip Roof
Shed / Lean-To
Flat Roof
2. Base Building Dimensions
FT
FT
True Roof Surface Area
1,502
SQ FT
15.02 Net Squares
Order Squares (With Waste)
16.52
SQUARES
1,652 sq ft (+10% waste)
Footprint
1,200 sf
Multiplier
1.118x
Ridge Length
42 ft
Perimeter
155 ft
Live Roof Geometry Model
Itemized Materials Takeoff
Based on 16.52 Sq
Shingle Bundles
Architectural (3 bundles / Sq)
50
Bundles
Synthetic Underlayment
10-Square Rolls (~9.2 Net Sq)
2
Rolls
Starter Strip Shingles
Perimeter coverage (105 LF/bundle)
2
Bundles (155 LF)
Hip & Ridge Cap Shingles
Ridge & hip lines (31 LF/bundle)
2
Bundles (42 LF)
Drip Edge Flashing
10-Ft metal pieces (5% overlap)
17
Pieces (10')
Ice & Water Shield
Valleys & eave barrier (65 LF/roll)
1
Rolls
Roofing Nails (Coil)
Standard 4-nail pattern
1
Box (5,286 nails)
Need an Official Contractor Takeoff Proposal?
Generate a clean, printable PDF proposal with client information, itemized materials bill, labor breakdown, and contract signatures.