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What does Roof Pitch Mean?

What does Roof Pitch Mean?

StarterBaffles are recommended for every rafter bay to ensure airflow from the eave/soffit area. They are designed to work with both 16″ and 24″ on-centers rafters. A simple and quick install will prolong the life of your roof and help validate your shingle warranty. To learn more about StarterBaffles click here

SmartVent Attic Intake and Exhaust
SmartVent is recommended for pitches that are 4/12 or higher. Now that you understand how to calculate your pitch, you will know if SmartVent attic Intake ventilation is right for your home or project. SmartVent is a patented roof and attic ventilation product that provides the best passive
attic ventilation available. Using a unique design and installation method, SmartVent eliminates the problems and inefficiencies found in roof construction using ridge and soffit venting, namely inadequate vent openings in the soffit. To learn more about SmartVent click here.

Understanding Roof Pitch

One of the most commonly used terms in roofing. So what does it mean?
Roof pitch (or slope) tells you how many inches the roof rises for every 12 inches in depth.

An Example of a roof pitch would be a “6/12 pitch” which means that the roof rises 6 ” for every 12″ inward towards the peak (or ridge).

There are two suggested ways to measure a roof pitch.
The first is from the top of the roof. Simply mark a level at 12″. Keeping the level balanced measure the distance from the level to the roof surface. If a roof has many layers of shingles your measurement could be slightly inaccurate using this method

The second is to measure from the bottom of the rafters. Measuring the pitch is still the process but you you can measure the roof pitch from three different locations using this preferred method. The underside of a rafter on an overhang at the bottom of the roof, the underside of a barge rafter on the gable end, and the underside of the rafter in the attic.

Exampl images of variouis roof pitches
Converting roof pitch to degrees is easy by using this chart below.
Degree equivalents for roof pitches
Pitch to degree conversions



FasciaVent for Flat to Steep roofs
SmartVent Shed and Off-Wall application

Before using insulation, ensure proper attic ventilation. SmartBaffle attic insulation baffles create clear airspace for your attic ventilation to help prevent mold and provide proper airflow to reduce heat that builds in the attic of your home.