| Title | खपरैल (Khaprail (Roof Tiles))Rare Khaprail Khaprail (Roof Tiles) |
|---|---|
| Description | खपरैल (Khaprail), known regionally as *खप्पर* (Khappar), *कौलु* (Kaulu), *ஓடு* (Odu) [Tamil], are fired clay roof tiles integral to Indic heritage architecture, particularly in Tamil Nadu, Kerala, Karnataka, and Goa. These terracotta or ceramic tiles, dating back to the Chola Dynasty and Vijayanagara Empire, provide weather protection and thermal insulation [2]. The raw material, sourced from clay quarries across the Indian subcontinent, undergoes shaping and firing at 900-1100°C. Material properties include water absorption (5-20%), density (1.8-2.2 g/cm³), and flexural strength (5-20 MPa). High porosity (15-20%) influences durability. Traditional construction methods, employing tools like *tile nippers* [1], ensured precise fitting. Conservation efforts address weathering and material degradation, necessitating careful replacement with tiles of similar composition and firing characteristics to maintain structural integrity and aesthetic harmony. Understanding the *भौतिक गुण* (bhautik gun - physical properties) and *रासायनिक संरचना* (rasayanik sanrachna - chemical composition) is crucial for effective restoration of heritage sites. Thermal conductivity ranges from 0.8-1.2 W/mK. |
| Also Known As | Khaprail (Roof Tiles) Khaprail Roof Tiles Terracotta Tiles Clay Roof Tiles Khaprail खप्पर खपरा कौलू नळे (Marathi) ஓடு (Tamil) పెంకులు (Telugu) ಹೆಂಚು (Kannada) ഓട് (Malayalam) |
| Tags | Tiles Roofing Clay Terracotta Ceramic खपरैल Khaprail Roof Tiles |
| Material ID | INHFMAT-084010430-20-11-25-KT |
| URI | https://www.inheritage.foundation/aat/material/roof-tiles |
| API Endpoint | https://inheritage.foundation/api/v1/aat/materials/roof-tiles |
| Total Sites | 3 |
| Primary Sites | 2 |
| Created | November 20, 2025 |
| Last Updated | November 28, 2025 |
| Types | Terracotta Fired Clay Ceramic |
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| Regions | Tamil Nadu Kerala Karnataka Goa |
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| Time Periods | Ancient Medieval Colonial |
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| Dynasties | Chola Dynasty Vijayanagara Empire Nayaka Dynasty |
| Sources | Local clay deposits Tile manufacturing units Local clay pits (Udupi) |
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| Properties | Water absorption: 5-20% Density: 1.8-2.2 g/cm³ Flexural strength: 5-20 MPa Firing temperature: 900-1100°C Porosity: 15-20% Thermal conductivity: 0.8-1.2 W/mK |
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| Uses | Roofing Cladding Paving Weather protection Thermal insulation |
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| Materials | लकड़ी - Lakadi (Wood) चूना - Chunā (Lime Mortar) |
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| Styles | Kerala architecture Konkani architecture Tamil architecture Dravidian architecture Goan architecture Mangalore tile roof style |
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| Categories | House Temple Community Buildings Houses Church |
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| Notes |
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| Title | Type | Notes |
|---|---|---|
| Traditional Tile Manufacturing Techniques | Technical Report | Firing and composition |
| Traditional Indian Roofing Systems | Technical Report | Tile manufacturing and application |
| Site Name | Status | Usage | Confidence |
|---|---|---|---|
| Sri Krishna Temple Udupi | Primary | 100% | |
| Viceroy's Palace Panaji | Primary | 100% | |
| Chilkur Balaji Temple Hyderabad | Secondary | 100% |