Maximum Roof Pitch For Shingles

One of the many advantages of using cedar shingles is that they can be used on roof pitches as low as 14 degrees.

Maximum roof pitch for shingles.

The chief reason for having a roof pitch is to redirect water and snow away from the roof. Nrca s recommended minimum roof slope guidelines for steep slope roof systems generally are greater at steeper inclines than those in the building code. Flat roofs form the bulk. Here s the thing a low slope roof will start to lose its ability to shed water at slopes lower than a 4 12 pitch.

Roof pitch is another term for the inclination of your roof and how steep it is. The maximum weather exposure for wood shakes or wood shingles depends on the shingle size and the slope or pitch of the roof. 9 46 built up roof asphalt. Allowable shingle exposure may also vary by the shingle grade something that you might infer by visual inspection of the shingles matching against wood shingle grade definitions or if a shingle identification label can be located.

So even though the minimum roof pitch for shingles is a 2 12 pitch you want to be really careful how you go about your job if your slope is betwer en a 2 12 and a 4 12 pitch. These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12 pitch. Shingle exposures for wood roofs. What is the minimum slope for an asphalt shingle roof.

Asphalt shingles continue to be the most widely installed roof covering option in north america. While a low pitch roof may not show the aesthetic qualities of cedar shingles to full advantage they provide a lightweight durable solution where a pitched roof is required. The minimum roof slope for metal roofs is dependent upon the roof profile. Traditional 3 tab shingles made with asphalt composite are the most popular type of shingle and are the most flexible in terms of adapting to many roof pitches.

Minimum pitch for metal roof. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. In 12 0 25 in 12 1 19 built up roof coal tar pitch. For individuals who are not well versed with roofing and architecture the slant of a roof seems like a trivial matter to worry about but it does play an important role in planning out and installing the right material and parts for your roof.

To achieve a sound watertight roof the gauge of the shingle assuming the standard 5x or 400mm shingle must be closed to 95mm giving a 4 ply roof. 18 43 asphalt shingles with special underlayment requirements 2 in 12. Minimum required slope x in 12 minimum required slope degrees asphalt shingles. What is the roof pitch for asphalt shingles on a house.

Roofs with a pitch lower than 4 12 require a. Referring to slopes of 18 rise in 12 of run 150 or more note that this is more cautious than bliss s advice found at asphalt shingle installation the nrca flickinger points out that there are differing views within the roofing industry about the maximum slope on which asphalt shingles may be applied using typical methods. Minimum roof slope importance of a roof pitch. The roofing materials most often used for these pitches include asphalt composite shingles.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.