What topcoats are used on the TSGB as of December 2021?

Interthane is recognized for its high performance and durability, making it an excellent choice as a topcoat for the TSGB. This product belongs to a range of high-quality coatings designed for industrial applications, known for their resistance to weathering, UV light, and chemical exposure. Interthane typically offers a smooth finish, enhances gloss retention, and provides long-lasting protection for surfaces exposed to harsh environments.

The other options, while being valid types of coatings in various contexts, do not meet the specific performance standards required for the TSGB as of December 2021. Alkyd coatings, for instance, are less durable compared to Interthane and may not provide the necessary resistance to environmental factors. Acrylic paints, while versatile, often lack the chemical resistance and longevity seen in higher performance coatings. Polyester finishes can be excellent for certain applications but are typically not utilized in the same contexts as Interthane due to differences in durability and adhesion properties. Thus, Interthane stands out as the most suitable choice for the requirements at hand.