* Water absorption: Shale is a sedimentary rock that tends to be porous. This means it absorbs water readily, which can lead to several problems:
* Frost damage: In freezing climates, water absorbed into the shale can freeze and expand, causing cracks and weakening the material.
* Mold and mildew: Moisture trapped within the shale can create a breeding ground for mold and mildew, leading to health issues and structural damage.
* Deterioration: Constant exposure to moisture can accelerate the breakdown of the shale, weakening it over time.
* Durability: While some types of shale may be harder and more durable than others, it generally doesn't hold up as well to the constant weathering and erosion caused by rain and humidity.
Alternatives for Wet Climates:
* Bricks: Fired clay bricks are much more water-resistant and durable than shale.
* Concrete: Concrete is a strong and water-resistant material that is commonly used in wet climates.
* Stone: Certain types of stone, like granite or limestone, are naturally more resistant to water damage than shale.
Exceptions:
* Shale may be used in specific applications: In some cases, shale may be used in limited applications like landscaping or decorative features, where its exposure to moisture is minimal.
* Proper treatment: With proper treatment, such as waterproofing coatings or sealing, shale can be used in some cases.
Overall, shale is not generally recommended for building materials in wet climates due to its porous nature and susceptibility to water damage.
