What is मृत्तिका खपरैल (Clay Tile)?

Mr̥ttikā Khaparaila (Clay Tile), or मृण्मय खपरैल (Mr̥ṇmaya Khaparaila) in Sanskrit, are ceramic roofing elements prevalent across the Indian subcontinent [1]. These terracotta products, known as कौलू (Tamil) or ఓട് (Malayalam), derive from alluvial clays sourced from riverbeds and lateritic soils [2]. Firing temperatures between 900-1100 °C impart compressive strength (15-30 MPa) and reduce water absorption (5-15%) [3]. Traditional processing involves clay levigation (शोधन - śodhana), molding, sun-drying (आतपन - ātapan), and kiln firing (अग्नि-संस्कार - Agni-saṃskāra) [4]. The Chola Dynasty, Vijayanagara Empire, and Travancore Kingdom extensively utilized these tiles in temple architecture and domestic dwellings [5]. Density ranges from 1.8-2.2 g/cm³, with flexural strength between 5-20 MPa [6]. Conservation necessitates addressing bio-deterioration and salt efflorescence. Restoration involves replacing damaged tiles with those of similar composition and firing characteristics to maintain structural integrity and aesthetic coherence [7]. Durability depends on clay mineralogy and firing process [8].

What type of material is मृत्तिका खपरैल (Clay Tile)?

मृत्तिका खपरैल (Clay Tile) is classified as Ceramic, Clay Product, Roofing Material, Earthenware, Terracotta. Key properties include Water absorption: 5-15%, Flexural strength: 5-20 MPa, Density: 1.8-2.2 g/cm³.

Where is मृत्तिका खपरैल (Clay Tile) used?

मृत्तिका खपरैल (Clay Tile) is commonly used in Kerala, Tamil Nadu, Goa, Karnataka. It is sourced from Local clay deposits, Tile factories, Local clay pits.

How is मृत्तिका खपरैल (Clay Tile) used in heritage architecture?

मृत्तिका खपरैल (Clay Tile) is used for Roofing, Flooring, Cladding, Paving in heritage architecture. It is found in 1 heritage sites.

मृत्तिका खपरैल (Clay Tile) | Inheritage Foundation Art & Architecture Thesaurus | Inheritage Foundation

Name: मृत्तिका खपरैल (Clay Tile)
Rating: 4.5 (1 reviews)
Author: Inheritage Foundation

Title	मृत्तिका खपरैल (Clay Tile) 4.5/5(Based on 1 heritage site) Rare Mr̥ttikā Khaparaila Clay Tile 4.5/5(Based on 1 heritage site)
Description	Mr̥ttikā Khaparaila (Clay Tile), or मृण्मय खपरैल (Mr̥ṇmaya Khaparaila) in Sanskrit, are ceramic roofing elements prevalent across the Indian subcontinent [1]. These terracotta products, known as कौलू (Tamil) or ఓട് (Malayalam), derive from alluvial clays sourced from riverbeds and lateritic soils [2]. Firing temperatures between 900-1100 °C impart compressive strength (15-30 MPa) and reduce water absorption (5-15%) [3]. Traditional processing involves clay levigation (शोधन - śodhana), molding, sun-drying (आतपन - ātapan), and kiln firing (अग्नि-संस्कार - Agni-saṃskāra) [4]. The Chola Dynasty, Vijayanagara Empire, and Travancore Kingdom extensively utilized these tiles in temple architecture and domestic dwellings [5]. Density ranges from 1.8-2.2 g/cm³, with flexural strength between 5-20 MPa [6]. Conservation necessitates addressing bio-deterioration and salt efflorescence. Restoration involves replacing damaged tiles with those of similar composition and firing characteristics to maintain structural integrity and aesthetic coherence [7]. Durability depends on clay mineralogy and firing process [8].
Also Known As	Clay Tile Mr̥ttikā Khaparaila Clay Tile Roof Tile Earthen Tile Terracotta Tile मिट्टी की खपरैल ग्राम्य खपरैल मृण्मय खपरैल खपरा कौलू (Tamil) పెంకు (Telugu) ಹೆಂಚು (Kannada) ഓട് (Malayalam)
Tags	Clay Tile Khaparaīla Roofing Ceramic Firing मिट्टी की खपरैल Khaprail Roof Terracotta मृतिका खपरैल Mritika Khaprail Roof Tile मृत्तिका खपरैल Mr̥ttikā Khaparaila Kerala
Material ID	`INHFMAT-054520709-20-11-25-MA`
URI	https://www.inheritage.foundation/aat/material/clay-tile
API Endpoint	`https://inheritage.foundation/api/v1/aat/materials/clay-tile`
Total Sites	1
Primary Sites	1
Created	November 20, 2025
Last Updated	November 28, 2025

External References

View on Getty AAT

Material Types

Types	Ceramic Clay Product Roofing Material Earthenware Terracotta

Regions

Regions	Kerala Tamil Nadu Goa Karnataka

Historical Context

Time Periods	Ancient Period Medieval Period Colonial Period
Dynasties	Chola Dynasty Vijayanagara Empire Portuguese Empire Travancore Kingdom

Geographic Sources

Sources	Local clay deposits Tile factories Local clay pits Tile manufacturing units in Kerala

Properties

Properties	Water absorption: 5-15% Flexural strength: 5-20 MPa Density: 1.8-2.2 g/cm³ Thermal conductivity: 0.8-1.2 W/mK Thermal resistance: Moderate Compressive strength: 15-30 MPa Firing temperature: 900-1100 °C

Common Uses

Uses	Roofing Flooring Cladding Paving

Related Materials

Materials	काष्ठ - Kāṣṭha (Timber) चूना - Chunā (Lime Mortar) कंकड़ - Kankar (Lime Nodules)

Related Styles

Styles	Kerala architecture Goan architecture Mangalore tile roof

Related Categories

Categories	House Temple Church Residential buildings Public buildings Temples Churches Residential Buildings Palaces

Conservation Notes

Notes	Susceptible to cracking Requires proper installation Algae growth Susceptible to cracking due to freeze-thaw cycles Requires periodic inspection and replacement Vulnerable to moss and lichen growth Vulnerable to damage from tree roots

Recommended Sources

Title	Type	Notes
Traditional Roofing Materials of India	Article	Clay tile production
Traditional Roofing Systems of South India	Technical Report	Tile types and installation
Traditional Roofing Materials of India	Technical Report	Performance characteristics
Traditional Building Materials of India	Book	Clay tile manufacturing

Heritage Sites (1)

Site Name	Status	Usage	Confidence
Hill Palace Tripunithura	Primary		100%

Frequently Asked Questions

Title	मृत्तिका खपरैल (Clay Tile) 4.5/5(Based on 1 heritage site) Rare Mr̥ttikā Khaparaila Clay Tile 4.5/5(Based on 1 heritage site)
Description	Mr̥ttikā Khaparaila (Clay Tile), or मृण्मय खपरैल (Mr̥ṇmaya Khaparaila) in Sanskrit, are ceramic roofing elements prevalent across the Indian subcontinent [1]. These terracotta products, known as कौलू (Tamil) or ఓട് (Malayalam), derive from alluvial clays sourced from riverbeds and lateritic soils [2]. Firing temperatures between 900-1100 °C impart compressive strength (15-30 MPa) and reduce water absorption (5-15%) [3]. Traditional processing involves clay levigation (शोधन - śodhana), molding, sun-drying (आतपन - ātapan), and kiln firing (अग्नि-संस्कार - Agni-saṃskāra) [4]. The Chola Dynasty, Vijayanagara Empire, and Travancore Kingdom extensively utilized these tiles in temple architecture and domestic dwellings [5]. Density ranges from 1.8-2.2 g/cm³, with flexural strength between 5-20 MPa [6]. Conservation necessitates addressing bio-deterioration and salt efflorescence. Restoration involves replacing damaged tiles with those of similar composition and firing characteristics to maintain structural integrity and aesthetic coherence [7]. Durability depends on clay mineralogy and firing process [8].
Also Known As	Clay Tile Mr̥ttikā Khaparaila Clay Tile Roof Tile Earthen Tile Terracotta Tile मिट्टी की खपरैल ग्राम्य खपरैल मृण्मय खपरैल खपरा कौलू (Tamil) పెంకు (Telugu) ಹೆಂಚು (Kannada) ഓട് (Malayalam)
Tags	Clay Tile Khaparaīla Roofing Ceramic Firing मिट्टी की खपरैल Khaprail Roof Terracotta मृतिका खपरैल Mritika Khaprail Roof Tile मृत्तिका खपरैल Mr̥ttikā Khaparaila Kerala
Material ID	`INHFMAT-054520709-20-11-25-MA`
URI	https://www.inheritage.foundation/aat/material/clay-tile
API Endpoint	`https://inheritage.foundation/api/v1/aat/materials/clay-tile`
Total Sites	1
Primary Sites	1
Created	November 20, 2025
Last Updated	November 28, 2025