What are common installation techniques used in glazing?

All of the mentioned techniques—setting blocks, glazing gaskets, and sealant application—are commonly used in glazing installations.

Setting blocks are crucial for supporting the glass in the frame and ensuring that it is positioned correctly and adequately held in place. They also help to manage the weight of the glass and prevent any undue stress on the glazing material, which can lead to cracking or failure.

Glazing gaskets serve as a weatherproof barrier around the glass, providing insulation and protection from moisture infiltration. They also contribute to the structural integrity of the installation by holding the glass in place and enhancing the overall aesthetic appearance of the glazing system.

Sealant application is vital for making joints watertight and ensuring a durable, long-lasting installation. Sealants also serve to accommodate any movement between materials due to thermal expansion or contraction, thereby preventing potential leaks and enhancing the performance of the glazing system.

The combination of these techniques in glazing ensures a proper installation that meets both aesthetic and functional requirements, confirming that "all of the above" is indeed the correct choice.