Roof pitch refers to the slope which the rafter creates.
Shed roof pitch uk.
There are advantages and disadvantages to having a steep pitch versus a shallow or low pitch the most obvious of which is the roof s ability to shed or withstand heavy snow rain or wind.
Beyond that you re free to choose whatever slope best fits your plans for your shed.
In roofing it is expressed in inches of vertical rise over inches of horizontal run.
There is no single recommended pitch for a shed roof so the slant you choose for your shed depends on several factors including the size of the shed weather conditions and local council planning guidelines.
A flat roof has a pitch of 10 degrees or lower.
Read more about roof pitch at wikipedia.
While house building is governed by stringent regulations in the uk these do not extend to the pitch of a shed roof.
A 4 12 pitch being 4 inches of vertical rise over one foot or 12 inches of horizontal run.
The flat roof pitch 0 to 10 degrees.
Remember that pitch is calculated as the height or rise of a roof pitch over 12 inches of horizontal run.
Whichever roof pitch you choose make sure that you select a roof covering that is designed to be waterproof at the angle that you eventually select.
Roofs can be classified into three broad groups according to roof slope.
Often you express roof pitch as the ratio between the rise and the run in the form of x 12.
You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof.
The main materials option used for a shed with a flat roof is bitumen mineral felt on top of sheet metal or plywood decking.
For a gothic style the rafters must equal the span 60 while an elizabethan style requires the rafters to be longer than the span.
The roof pitch measures the steepness of your shed roof and typically takes values from 1 to 12.
If your roof pitch is greater than 3 your roof is considered pitched.
In snowy areas your roof should be at least 10 12 40 to allow snow to shed while the safest roof pitch in very windy areas is between 4 12 6 12 18 5 26 5.
If choosing a flat roof keep in mind this will most likely require more frequent maintenance to prevent leaking.
Your shed roof pitch may also be influenced by your project specific requirements to let light into the building through the roof or create storage space in the roof void.
Constructing a new shed roof at the desired pitch is as easy as knowing how to use a speed square.
As stated in the video speed squares have useful markings on them from 0 to 12.
Therefore if your roof rises 4 inches over the course of 12 inches of horizontal run then your roof pitch is 4 12.
