What is the minimum side lap measurement between joints in adjacent courses for wood shakes?

The minimum side lap measurement of 1-1/2 inches between joints in adjacent courses for wood shakes is important for several reasons. First, this measurement helps to ensure proper water shedding and prevents leaks by providing adequate overlap between the shakes. Without sufficient side lap, water can penetrate through the joints, potentially causing damage to the roof structure and the interior of the home.

Additionally, the 1-1/2 inch measurement is standard in the industry, allowing for consistent installation practices that lead to better overall roof performance. This standard promotes durability and longevity in shake roofing, ensuring that it can withstand various weather conditions.

Using the correct lap measurement also affects the aesthetic appeal of the roof. A consistent appearance promotes a uniform look, which is often desired in residential construction. Thus, adhering to the minimum side lap measurement is essential for both functional and visual reasons in the installation of wood shakes.