When planning a roofing project, accurate measurements and material calculations are crucial for both budgeting and execution. Our roofing calculator helps you determine the exact quantities needed, taking into account important factors like roof pitch and overhangs.

The calculator uses standard industry measurements:
• 1 Square = 100 square feet of roof area
• 1 Bundle of Shingles ≈ 33.3 square feet coverage
• 1 Roll of Underlayment = 1 Square (100 sq ft)
• Nails: 4 nails per shingle, about 360 per bundle

Remember that it's always wise to add 10-15% extra material for waste, cuts, and mistakes.

Different roof pitches serve various purposes and are suited to different climates and architectural styles:

Pitch	Angle	Common Uses
2/12	9.5°	Sheds, porches, modern homes
4/12	18.4°	Most residential roofs
6/12	26.6°	Traditional homes
8/12	33.7°	Tudor, Victorian styles
12/12	45.0°	Gothic, steep designs

Steeper pitches (>6/12) provide better water drainage and snow shedding but require more materials and are more challenging to install.

The durability of your roof depends heavily on material quality and proper installation:

• Asphalt Shingles: 20-30 years
• Architectural Shingles: 25-30 years
• Metal Roofing: 40-70 years
• Slate Tiles: 75-100+ years

Factors affecting lifespan include:
• Local climate and weather conditions
• Proper ventilation
• Regular maintenance
• Installation quality
• Material grade

Investing in higher quality materials often results in better long-term value despite higher initial costs.

While DIY roofing can save money, it's important to consider several factors:

Pro Installation Benefits:
• Warranty protection
• Expert workmanship
• Safety equipment and insurance
• Faster completion
• Code compliance

DIY Considerations:
• Personal safety risks
• Potential warranty issues
• Learning curve
• Tool investments
• Time commitment

For most homeowners, professional installation is recommended due to the complexity and safety requirements of roofing work.