स्लेट - Slet (Slate) | Inheritage Foundation Art & Architecture Thesaurus | Inheritage Foundation

Title	स्लेट - Slet (Slate) स्लेट Slet
Description	स्लेट - Slet (Slate) is a fine-grained, foliated metamorphic rock derived from shale. It is characterized by its excellent cleavage, allowing it to be split into thin sheets. Density ranges from 2.6 to 2.8 g/cm³.
Tags	शैलखटी Shailakhaṭī Slate Roofing Metamorphic स्लेट Kangra Temple Quarry Chamba Stone Metamorphic Rock Slet
Material ID	`INHFMAT-941539446-20-11-25-SA`
URI	https://www.inheritage.foundation/aat/material/slate
API Endpoint	`https://inheritage.foundation/api/v1/aat/materials/slate`
Total Sites	1
Primary Sites	0
Created	November 20, 2025
Last Updated	November 20, 2025

Material Types

Types	Metamorphic Rock Roofing Material Foliated Rock

Regions	Himachal Pradesh Uttarakhand Kullu Valley

Time Periods	Medieval Period CE Colonial Period 18th Century CE 16th Century CE 10th-11th century CE 17th Century CE 19th Century CE 20th Century CE
Dynasties	Katoch dynasty Local Rulers Local Rulers of Kullu Valley Chamba Kingdom Kullu Kingdom Rajput British

Sources	Himalayan slate quarries Local slate quarries in Kangra Valley Local slate quarries in Himachal Specific quarries near Kinner Kailash Local slate quarries near Manali Local slate quarries near Chamba Local slate quarries in Kullu region Kangra Valley quarries specific geographic sources

Properties	Density: 2600-2800 kg/m³ Water absorption: <0.4% Flexural strength: 40-60 MPa Thermal expansion: Low Density: 2.7-2.8 g/cm³ Flexural strength: 30-50 MPa Water absorption: 0.1-0.5% Thermal conductivity: 2.8 W/mK Density: 2700-2800 kg/m³ Flexural strength: 30-60 MPa Water absorption: 0.1-0.4% Flexural Strength: 30-60 MPa Water Absorption: <0.5% Thermal Expansion Coefficient: 8-10 x 10^-6 /°C Density: 2.6-2.8 g/cm³ Mineral composition: Quartz, Muscovite, Chlorite Water absorption: <0.3% Thermal expansion coefficient: 8-10 x 10⁻⁶ /°C Thermal conductivity: 2.5-3.0 W/mK

Density: 2600-2800 kg/m³

Water absorption: <0.4%

Flexural strength: 40-60 MPa

Thermal expansion: Low

Density: 2.7-2.8 g/cm³

Flexural strength: 30-50 MPa

Water absorption: 0.1-0.5%

Thermal conductivity: 2.8 W/mK

Density: 2700-2800 kg/m³

Flexural strength: 30-60 MPa

Water absorption: 0.1-0.4%

Flexural Strength: 30-60 MPa

Water Absorption: <0.5%

Thermal Expansion Coefficient: 8-10 x 10^-6 /°C

Density: 2.6-2.8 g/cm³

Mineral composition: Quartz, Muscovite, Chlorite

Water absorption: <0.3%

Thermal expansion coefficient: 8-10 x 10⁻⁶ /°C

Thermal conductivity: 2.5-3.0 W/mK

Uses	Roofing tiles Paving stones Wall cladding Paving Cladding Roofing Paving (less common) Flooring Blackboards

Materials	लोहा - Lohā (Iron) (for fasteners) काष्ठ - Kāshtha (Timber) (for roof structure) लोहा - Lohā (Iron) काष्ठ - Kāshtha (Wood) चूना - Chunā (Lime Mortar) लकड़ी - Lakadi (Wood)

Styles	Kath-Kuni architecture Colonial architecture in hill stations Vernacular architecture Nagara architecture style Himalayan architecture style Pahari architecture Colonial architecture Colonial architecture style Victorian architecture style

Categories	Residential buildings Government buildings Temple Residential Buildings Fort Roofing Palace House School Church

Notes	Susceptible to delamination Requires careful handling Replacement with similar material Susceptible to delamination due to weathering Requires periodic replacement of damaged tiles Potential for moss and lichen growth Requires periodic replacement Vulnerable to acid rain Susceptible to weathering and delamination over long periods Requires periodic replacement of damaged slates Biological growth on surface Algae growth on surface Potential for water ingress if improperly installed Susceptible to delamination due to freeze-thaw cycles Algae and lichen growth can be a problem Vulnerable to freeze-thaw damage

Notes

Title	Type	Notes
Geological Survey of India Reports	Geological Survey	Slate deposits in India
Building Materials Evaluation Reports	Technical Report	Slate properties and durability
Building Stones of India	Book	Slate properties
Geological Survey of India Reports	Technical Report	Slate deposits and properties
Building Materials Handbook	Textbook	Slate properties

Site Name	Status	Usage	Confidence
ISKCON Toronto Hare Krishna Temple	Secondary	Walls	100%