How Much Slope On A Shed Roof

The minimum slope for lapped non soldered seam metal roofs without applied lap sealant shall be three units vertical in 12 units horizontal 25 percent slope.

How much slope on a shed roof.

If you are only trying to keep a wood pile dry or storing a few outdoor tools and light machinery out of the weather then you might consider a simple single pitch roof since most everything inside will be stored at ground level and pulled out from the outside of the shed. Acceptable flat roof coverings include tin roof sheets and pre fabricated plastic sheets. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.

Much depends on what your intended use for the shed actually is. A roof with a slope of 10 degrees 2 12 or less is generally considered a flat roof. If your roof pitch is greater than 3 your roof is considered pitched. Felt shingle systems can achieve lower slopes down to about 20 degrees.

This means that for every 12 inches of horizontal distance across the shed the roof will rise 4 inches. However an ideal roof drop per foot should be at least one eighth to one quarter of an inch per foot. Roof pitch is used to describe the slope or angle of the roof. This slope works well for sheds that are fairly narrow like 4 to 6 feet but for sheds that are 8 or wider the shed roof becomes unsightly high.

Asphalt shingles typically have a minimum slope rating of 4 in 12. A ratio is the most common way of expressing roof pitch or roof slope but degrees are also possible. The profile is the shape taken by the sheets when you bend them to form panels. So if your roof rises 4 inches for every 12 inches of horizontal length then the pitch of your roof is expressed as 4 12.

The roof pitch measures the steepness of your shed roof and typically takes values from 1 to 12. For slopes below 20 degrees systems such as epdm fibreglass metal roofing can be used. The way pitch also known as roof slope is measured is rise over run. Anything with a slope of some kind will cause water to run off the roof.

The minimum slope of a roof depends on the roof s profile. Read more about roof pitch at wikipedia. Anything less than one eighth of an inch may pool on the roof. Express the slope of a metal roof by a ratio which indicates the pitch of the roof.

You need to consider the slope requirements of each panel to determine this minimum slope. Visit the shed roofing page. For lots more information on which roof finish to use for which slope and indicative costs.