True or False: A cast-in-place chimney flue liner is made of a lightweight, cement-like product.

A cast-in-place chimney flue liner is indeed made of a lightweight, cement-like product. This material is specifically designed for use within chimneys to improve the efficiency and safety of the flue system. The lightweight nature of the product facilitates easier installation compared to traditional clay or ceramic liners, enabling it to be poured directly into the chimney space to create a smooth, seamless lining.

This method not only enhances the chimney's structural integrity but also helps in preventing the escape of flue gases, while offering better resistance to corrosion and heat. Moreover, the cement-like composition contributes to the durability and longevity of the flue liner, making it suitable for permanent application in residential and commercial properties. Thus, the assertion that it is made of a lightweight, cement-like product is accurate.