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Calculate how many shingles you need for your roof
West Virginia receives about 44 inches of rain annually.
Climate Zone
5
Electricity
$0.12/kWh
Labor Costs
85% avg
Estimate your roof size and replacement cost in your area.
Annual rainfall: 40" — affects material recommendations
Multiplier: 1.12x ground footprint
Expected lifespan: 25-30 years
Ground Footprint
1,500
sq ft
Total Roof Area
1,680
sq ft
Roofing Squares
17
squares (100 sq ft each)
Shingle Bundles
57
bundles needed
Estimated Replacement Cost
Architectural Shingles • Includes tear-off and labor
$9,775 - $14,025
$575 - $825 per square
Materials Estimate
Shingle Bundles
57
Underlayment Rolls
5
Ridge Cap Bundles
5
This is an estimate based on standard calculations. Actual costs vary based on roof accessibility, existing damage, local material costs, and contractor rates. A professional inspection is required for accurate pricing.
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West Virginia is in Climate Zone 5 - Cool-Humid/Cold (significant heating, moderate cooling). Homes here typically have higher heating demands than cooling.
Roofing is measured in 'squares'—each square equals 100 square feet of roof area. Here's what goes into our calculation:
DIY roofing can save money, but some situations definitely call for professionals:
Most architectural shingles require 3 bundles per square (100 sq ft). Some premium shingles need 4-5 bundles per square. 3-tab shingles also use 3 bundles per square but are less common now.
Place a level against your roof and measure how many inches the roof rises over 12 inches of horizontal run. That gives you your pitch (e.g., 6/12 means 6 inches of rise per 12 inches of run). You can also measure from inside the attic.
Removing old shingles is almost always better. It lets you inspect the deck, install new underlayment, and results in a longer-lasting roof. Most codes allow only two layers of shingles—if you already have two, tear-off is mandatory.
Architectural (dimensional) shingles are thicker, more durable, and have a multi-dimensional appearance. They typically last 25-30 years vs. 15-20 for 3-tab. They cost more but offer better warranties and wind resistance.