Which type of mortar is recommended due to controlled unhydrated oxides and plasticity?

Type S mortar is recommended due to its controlled unhydrated oxides and plasticity, making it suitable for various structural applications. This type of mortar possesses a higher compressive strength compared to Type N and Type O mortars, which allows it to be used in load-bearing walls and applications that require enhanced tensile strength. Its plasticity also enables better workability, which is critical during installation, allowing for easier shaping and application.

The controlled unhydrated oxides in Type S mortar contribute to its durability and performance under various environmental conditions. This characteristic helps maintain the integrity of masonry structures over time, particularly in regions with fluctuating weather conditions. The combination of strength and flexibility provided by Type S mortar makes it a preferred choice for structural applications in residential buildings.