The answer is Slate. It is similar to Shale. It is still used but much less than 80 years ago.
Slate is used in upscale roofing applications.
Slate is a common metamorphic rock used for roofing material due to its durability, water resistance, and natural beauty. It is formed from the metamorphism of shale or mudstone.
Slate is a foliated metamorphic rock that can be used for flooring, roofing, and as a material for chalkboards due to its durability, low water absorption, and smooth surface that can be easily written on and wiped clean.
Slate is a type of metamorphic rock that does not have the ability to change or adapt to weather conditions. It is a durable material often used in roofing or as a writing surface due to its resistance to weathering.
Slate is a fine-grained, foliated, homogeneous metamorphic of silt. It is able to be cleaved into sheets which can be used as roofing slates, or left thicker to form hard wearing paths, in house building, ornamental fireplaces, and so on.
Slate is a relatively soft metamorphic rock. It falls between the hardness of a soft rock, like talc, and a medium hardness rock, like marble. It is commonly used for roofing, flooring, and other construction purposes due to its durability and resistance to staining.
Slate
granite is your answer
Slate is a common metamorphic rock used for roofing material due to its durability, water resistance, and natural beauty. It is formed from the metamorphism of shale or mudstone.
Slate is a foliated metamorphic rock that can be used for flooring, roofing, and as a material for chalkboards due to its durability, low water absorption, and smooth surface that can be easily written on and wiped clean.
It has been, but limestone is prone to weathering, and is easily damaged by air pollution.
Slate is a common type of rock used for roofing material due to its durability, resistance to weathering, and natural beauty. It is formed from shale or clay deposits that have been subjected to high pressure and heat over time. Slate roofs can last for many decades when properly installed and maintained.
LEAD
It was a divot.
Plywood is primarily used as a sheathing material in roofing applications to provide a stable base for roofing materials such as shingles or tiles.
An argillite is a fine-grained sedimentary rock, sometimes used as a building material.
Slate is a sedimentary rock that can be split horizontally to produce smooth flat surfaces that is often used as a roofing material.
Slate is commonly used as a roofing material for houses due to its durability, water resistance, and aesthetic appeal. It is a metamorphic rock that can be easily split into thin sheets, making it ideal for roofing applications. Additionally, slate roofs can last for many decades, adding to their popularity in both historical and modern architecture.