Slate
Some of the oldest buildings in the world are covered with slate, which is a natural stone. In some parts of England, hand-carved slate is still used.
Advantages: A slate roof is charming. This material is immortal (relative to human time) as long as the structure resists. Slate does not burn and it allows the roof to breathe.
Disadvantages: A local Denver roofer confirms that this type of roof is very expensive and requires a strong resistance structure, because slate is the heaviest roofing material.
Ceramic tiles
Ceramic tiles are made of natural clay, sand and water and baked to remove the moisture and make them solid and resistant.
Advantages: This roof is energy efficient and ensures very good ventilation. Ceramic tiles are non-toxic, very resistant in any type of climate and require minimal maintenance. They do not burn.
Disadvantages: A ceramic roof is expensive and heavy. A lot of energy is consumed to manufacture the tiles.
Wood shakes
Advantages: A wood roof has a particular charm and is a very good thermal insulator. Wood shakes cope with all weather conditions, being practical in any area and at any altitude.
Disadvantages: This roof needs regular maintenance, and the wood must be treated for protection against water and fire.