What is the minimum recommended slope for a standard installation of shakes?

The minimum recommended slope for a standard installation of shakes is 4:12. This slope is crucial because it ensures that water drains properly from the surface of the shakes, reducing the risk of water accumulation which could lead to leakage, rot, or mold growth. A slope of 4:12 means that for every 12 horizontal units, there should be a rise of 4 vertical units, providing sufficient incline for effective water runoff.

Using a slope of 4:12 helps to maintain the integrity and lifespan of both the roofing material and the structure beneath. It also falls within industry standards for shake installations, allowing for optimal performance in varying weather conditions typical in areas like Alaska. Other slopes may not guarantee effective drainage and could lead to issues over time.