Roofing Reference Materials

Charts, tables, code requirements, and technical specifications every roofer and homeowner needs. Bookmark these pages for quick access during your project.

Cost & Pricing Materials & Coverage Building Codes & Permits Roof Design & Structure Color & Style

Cost & Pricing

Roofing Cost Index

Regional roofing cost data including material and labor pricing by market. Track price trends and compare costs across different areas of the country.

Warranty Comparison Chart

Side-by-side comparison of manufacturer warranties from GAF, Owens Corning, CertainTeed, and more. Coverage periods, transferability, and what voids a warranty.

Materials & Coverage

Shingle Coverage Chart by Brand

How many square feet does a bundle cover? Reference chart for GAF, Owens Corning, CertainTeed, Tamko, and IKO shingles with bundles per square for each product line.

Roofing Material Weight Chart

Dead load weights for all roofing materials in pounds per square foot and per roofing square. Essential for structural load calculations.

Roof Lifespan Chart

Expected lifespan of every roofing material — asphalt shingles, metal, tile, slate, and more. Factors that shorten or extend roof life and when to plan replacement.

Average Roof Size Chart

Average roof sizes by home square footage, stories, and roof style. Use these benchmarks to estimate material quantities before measuring.

Building Codes & Permits

Building Code Requirements

Key residential roofing code requirements including underlayment, ice barrier, ventilation, and fastener rules from IRC and local amendments.

Roofing Permits by State

State-by-state guide to roofing permit requirements. Which jobs need a permit, typical fees, inspection steps, and penalties for unpermitted work.

Wind Zone Map & Requirements

US wind zone classifications with required shingle ratings, nail patterns, and supplementary fastening requirements for each zone.

Snow Load Map

Ground snow load values (psf) mapped across the US. Structural requirements for roof framing, ice dam protection zones, and minimum slope requirements by region.

Roof Design & Structure

Roof Pitch Multiplier Table

Complete reference table of pitch multipliers from flat (0/12) to extreme (24/12). Use these multipliers to convert footprint area to actual roof area based on your pitch.

Roofing Nail Patterns & Spacing Guide

Nail placement diagrams for shingles, underlayment, and flashing. Includes standard and high-wind zone patterns per manufacturer specifications.

Roofing Terminology Glossary

Comprehensive A-Z glossary of roofing terms. From "apron flashing" to "zinc strip," every term a homeowner or contractor needs to know.

Color & Style

Roof Color Guide

How to choose the right roof color for your home. Covers curb appeal, energy efficiency, HOA rules, and how color interacts with siding, trim, and climate.

Shingle Colors by Brand

Browse shingle color options from GAF, Owens Corning, CertainTeed, Tamko, and IKO. Compare palettes, see popular picks, and find matching accessories.

Need to Run the Numbers?

Use our free calculators alongside these reference materials to plan your roofing project with confidence.

Browse All Calculators