Roofing & Gutters

Roofing materials, pitch, gutters, and downspout sizing.

Calculators

(3)

Roofing Calculator

Squares, shingle bundles, underlayment, ridge cap, drip edge and cost, with the true pitch multiplier and waste

Gutter Cost Calculator

Estimate gutter cost, materials, downspouts, and hardware for your home

Rain Gutter & Downspout Sizing

Size gutters and downspouts based on roof area and rainfall

Cheat Sheets

(3)

Roof Pitch to Angle Conversion

Table converting common roof pitches into angles and surface area multipliers

Gutter Installation Cheat Sheet

Complete gutter installation guide with parts list, sizing charts, slope requirements, step-by-step installation, and maintenance tips

Asphalt Shingle Roofing Cheat Sheet

Code rules by pitch and climate, nailing, underlayment, flashing sequence, vent math and a material list for your roof

Explore other topics

Painting & Finishes Flooring & Tile Drywall & Insulation Framing & Carpentry Trim, Molding & Cabinets Concrete & Masonry Decks, Fences & Patios Electrical Plumbing HVAC & Climate Landscaping & Outdoor Tools & Workshop Doors & Windows Energy & Efficiency Home Maintenance & Safety Smart Home & Low-Voltage Appliances & Fixtures

Use this on a project

Reroof with asphalt shingles

Start a project

What are you building?

Pick one for a step-by-step plan with tools, materials and costs, or tell us in your own words.