Recommendations for application of asphalt shingles on steep slopes and mansard construction asphalt shingles on slopes greater than 21 12 defines the maximum slope for normal shingle application and suggests different installation methods for slopes beyond that maximum.
Steep pitch roof shingles.
In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep.
So a roof with four inches of rise every 12 inches horizontally run would have a slope of 4 12 sometimes displayed as 4 12.
Follow the simple steps belsow to reroof your own steep roof.
Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle.
You can reroof a steep roof but you will need to take extra safety precautions.
This is my last video about shingles installations we do about 2 shingle jobs per week this week we started this house on tuesday removal.
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Determine your roof s pitch.
With the proper tools and materials this home improvement job will probably take a minimum of 2 days to complete providing the weather is clear.
A roof with x rise 12 run slope means that for every 12 inches horizontally run it rises x inches.
Steep slope roofing the slope of a roof is often referred to as the pitch.
The slope of a roof often referred to as the pitch is determined by rise over run the roof s vertical rise in inches for every twelve inches of horizontal length the run.
High and low pitch examples two examples at each end of the spectrum.
The slope of the roof is known at the pitch.
If you happen to have an extremely steep roof you will have an even greater challenge.
The possibility of slipping and falling makes working on any roof dangerous but it s especially so if the roof rises more than 4 feet for every 12 feet of horizontal span.
Roof pitch roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.
Step 1 safety.