Wood shingles must have a slope of what ratio or greater?

Wood shingles must have a slope of 3:12 or greater to ensure proper water runoff and prevent water from pooling on the roof surface. This slope ratio means that for every 12 horizontal inches, the roof rises 3 vertical inches. A slope of this steepness allows for adequate drainage, which is vital for safeguarding the shingles from water damage, moss growth, and potential leaks. If the slope is less than 3:12, wood shingles may not shed water effectively, increasing the risk of issues such as deterioration, and may not comply with building codes or manufacturer recommendations for wood roofing materials.

Understanding the importance of the slope helps in making informed decisions in both construction and maintenance, as it directly impacts the longevity and performance of the roofing system.