What tool is used to layout angles such as 45° and 90° for roofing purposes?

The tool specifically designed to layout angles, including 45° and 90°, for roofing purposes is known as a rafter angle. This tool is commonly used by roofers and carpenters to create precise cuts for rafters, ensuring that the angles align correctly for the structural integrity of the roof.

Rafter angles are typically triangular in shape, allowing for easy measurement and marking of both common and hip rafters. This versatility is crucial in roofing projects where achieving accurate angles can determine the success of the installation and overall aesthetics of the roof.

While a carpenter's square, framing square, and speed square can also assist in laying out angles, the rafter angle is specifically designed for roofing applications and provides unique features tailored for that purpose, such as specific markings for common angles used in rafter construction.