Roofing Glossary

Roof Pitch

Roof pitch is the measure of your roof's steepness, expressed as the inches of vertical rise for every 12 inches of horizontal run. A 6/12 pitch rises 6 inches over a foot — a moderate slope. A 12/12 pitch is a steep 45 degrees.

Pitch determines almost everything about a roof: which materials are appropriate, how water drains, how safe it is to walk on, and how much it costs to work on. Very low-slope roofs (below about 4/12) cannot rely on shingles alone to shed water and need specialized low-slope systems. Steep roofs shed water and snow beautifully but cost more in labor because crews must use safety equipment.

Pitch also affects curb appeal and attic space — steeper pitches give more usable attic volume.

Why It Matters

When comparing quotes, pitch is a major cost driver: steep roofs take longer and require more safety setup. Knowing your pitch helps you understand why two seemingly simple replacements can be priced very differently.

A Maryland Note

Maryland's mix of snow, heavy rain, and humidity favors moderate to steep pitches that shed water quickly — flat and very low-slope sections need extra attention here.

Questions about your own roof? Request a free estimate or call Nucci Brothers Roofing at (301) 458-1003.