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Galle Fort coral-stone wall conservation: slaked shell lime mortar vs modern Portland cement?

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C
Claire Bawa•920 rep

What materials does the Central Cultural Fund mandate for restoring 18th-century Dutch colonial coral-stone ramparts and townhouses inside Galle Fort?

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5 Answers from travellers

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Restoration work within the UNESCO World Heritage Galle Fort is overseen by the Central Cultural Fund and Archaeology Department. Modern Portland cement is prohibited on historical walls; its rigidity and low vapor permeability traps moisture within the porous coral stone and kabook (laterite) masonry, accelerating structural decay. Masons must use traditional lime mortar formulated from slaked shell lime, fine river sand, and traditional organic additives like jaggery water and bael fruit mucilage to ensure breathability.

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Prof Gamini•1890 rep

Replacing original Dutch timber roof frames requires sourcing mature calamander, teak, or jak wood; using cheap pinewood or steel trusses violates preservation guidelines.

19
C
Claire Bawa•920 rep

Original Dutch terracotta half-round tiles (sinhala ulu) must be retained or re-laid over waterproof membranes to preserve the historic streetscape aesthetics.

15
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Minoli Bawa•1880 rep

Property modifications carried out without prior written archaeological permits can lead to stop-work injunctions and municipal utility disconnections.

14
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Senaka•1820 rep

Installing visible rooftop solar arrays on street-facing elevations is denied by heritage conservation committees; panels must be recessed behind parapet lines.

12
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Pradeep•1690 rep

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