Minimum Roof Pitch For Wood Shingles

Roofing material or system.

Minimum roof pitch for wood shingles.

The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span. Coal tar built up roofs can be installed on a roof pitch of 1 8 12 or greater. If your home features a low slope roof you can still install the cedar roof of your dreams. Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run.

5 12 to 12 12 pitch. Normal shingle installation is allowed for all roofs with a pitch of 4 12 and above. However it is regrettable that many installers usually ignore this requirement due to the desire for a quick installation process. Wood and slate shingles are used in many of the same types of roofs as asphalt composite shingles but may not be appropriate for roofs near the lower end since they are more susceptible to leaking.

Built up roofs require a minimum roof pitch of 1 4 12 or greater. We do install shingles on these in between pitches but special application measures must be taken in this middle ground. 18 43 asphalt shingles with special underlayment requirements 2 in 12. At these pitches there is a possibility of some water penetration.

Low sloped roof shingle installation. Slate and slate type shingles require a minimum roof pitch of 4 12 or greater. The minimum sidelap for both shakes and shingles is 1 inches. Minimum required roof slope for roofing materials.

Wood shingles require a minimum roof pitch of 3 12 or greater. Wood and slate shingles do not lock together as tightly as other types of shingles. At these low pitches 14 22 degrees care must be taken and a water impermeable vapour permeable underlay must be used underneath with a ventilated space between the membrane and the shingles. Wood shingles are more susceptible to leaks than composite or asphalt shingles because they don t lock as tightly or lay as flat as traditional shingles.

Wood shakes require a minimum roof pitch of 3 12 or greater. If 4 12 and above is normal and 2 12 is minimum what about properties with roofs in between the two such as a 3 12 pitched roof. Wood shingles are installed on roofs with a slope of 6 in 12 for best performance but may be on a slope as low as 4 12. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12.

So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. Wood shingle nails need to be long enough to penetrate 1 2 3 4 for the ubc into the roof wood decking or nailing boards. The minimum roof pitch for shingles and shakes is 14 degrees. 9 46 built up roof asphalt.

This means that you shouldn t see any shake or shingle joints in adjacent courses within 1 inches of each other or within 1 inches of a knot or similar defect. In 12 0 25 in 12 1 19 built up roof coal tar pitch.