Roofing For Roof With 4 12 Slope

A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance.

Roofing for roof with 4 12 slope.

Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter. This forms an angle of 18 5 between the horizontal section and the roof and creates a gentle incline that is seen as a midpoint between a low pitch and medium pitch roof. The pitch of the roof is the rise over a 12 inch run. This means for every 12 horizontal units the roof must rise a minimum of 4 vertical units.

The slope of the roof provides the rise and the run to be plugged into the equation. 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. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. It is often compared to slope but is not exactly the same.

For example a 4 12 pitch roof that is 100 square feet. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. For example if you measure 4 inches the pitch of your roof is 4 12.

100 1 054 105 4ft 2. Minimum roof slope roof pitch r905 6 2 slate shingles can only be installed on roof slopes of 4 12 or greater 33 slope. Outside of the u s a degree angle is typically used. That means the roof doesn t shed water as easily as steeper roofs which is why choosing the right type of roofing material is so important.

High and low pitch examples two examples at each end of the spectrum. Simply put it s a shallow roof. The roof pitch factor is also used to calculate the length of common rafters. Most roof s have a pitch in the 4 12 to 9 12 range.

Use our roof pitch calculator to find the pitch of your roof. Roofs require slope for adequate drainage and even so called flat roofs must have some incline. For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep. A 4 12 is a roof slope that rises by 4 inches for every 12 inches across.

This will give you the rise over run or pitch. Roof pitch area multipliers. The table below shows common roof pitches and the equivalent grade degrees and radians for each.