For lots more information on which roof finish to use for which slope and indicative costs.
Sloped lean to shed roof pitch.
Some may say it is ugly.
Stor mor s lean to or sidekick storage shed is built with a single sloped roof making it ideal for limited storage requirements.
Lean to shed roofs develop an interesting problem as they get larger.
Thus a 4 12 pitch would be a 33 slope.
More modern tiling and felt shingle systems can achieve lower slopes down to about 20 degrees.
Featuring all four walls this shed is designed to be built up against a house or fence.
A ratio is the most common way of expressing roof pitch or roof slope but degrees are also possible.
In other words if there is a 1 1 2 ridge board nailed into the wall and the width of the lean to is 96 then the run will be 94 1 2 96 1 1 2 94 1 2.
Once installed your lean to style shed can look like an extension of your home.
This ugly design is most often avoided by installing a low slope roof to keep the rise of the roof at a minimum.
You can also divide the rise over run multiply by 100 and get a percentage.
For slopes below 20 degrees systems such as epdm fibreglass metal roofing can be used.
If the roof pitch is very steep at all then it will rise to a height that becomes unsightly.
A 4 12 pitch is around 18 5 degrees but not exactly.
A relatively steep pitch in excess of 40 degrees to be waterproof.
Another widely used method is to follow the house s roof pitch on one side building the ridge off center then sloping down more drastically on the shorter side which will be closer to the house.