The tools required will be a contractor s level at least 24 inches long and a tape measure.
Safe roof pitches in pa.
Low slope roof 4 12 slope or less 29 cfr 1926 501 b 10.
Any pitch higher than 9 12 is considered a steep pitch.
A flat roof would have a 2 12 pitch while the average roof pitch would be between 4 12 and 9 12.
But since there is still a wide variety of slate roofing systems there are occasions when the minimum pitch can go down to as low as 15 0 depending on the uniqueness of the roof.
Ideally you will have safe access to your roof from inside the building.
If you want to build a shed garage or other similar type of building then 4 to 6 is a preferable pitch type.
A roof pitch of 6 12 26 5 or less is considered easily walkable and no extra precautions are required.
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.
Contractors and employers who perform construction.
Some sources consider low slope to include 3 12 pitch roofs.
Ways to work on a steeply pitched roof.
Low slope roofs are from 0 to 3 12 in pitch.
A roof of pitch 7 12 30 is manageable but caution should be taken.
The pitch of the roof is determined by the vertical rise in inches for every horizontal twelve inch length.
The roof pitch would be described as a 6 12 pitch.
The pitch of your roof also helps determine the type of materials that can be used on your roofing system.
An average person can easily and safely walk upon these roofs without need of additional equipment.
The primary reason roof pitch exists in the first place is to redirect water.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
If not you will need to make your measurement from on top of the roof itself or at the edge of the roof with a ladder.
Most roofs in america follow these dimensions where pitch range is kept between 3 to 7 1 2.
Measuring a roof pitch.
They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.
Notes to the table above.
Pitch is a measure of the steepness of a roof.
With regards to the pitch the building standard code bs 5534 recommends a minimum pitch of 200 for slate roofs.
The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
If asphalt shingles are to be installed on a low slope roof special steps are required to avoid short roof life and roof leaks.
It is an essential element to ensure water drains properly off of your roof.
