China's Calcium Silicate prices moved higher in May 2026, with Calcium Silicate prices increasing by 3.13% as rising feedstock costs, tighter spot availability, and improving downstream demand supported bullish market sentiment.
The increase in Calcium Silicate prices was primarily supported by higher production costs. During May, industrial silica sand prices increased by 4.0%, raising manufacturing expenses for Calcium Silicate producers. In contrast, calcium carbonate prices eased marginally during the month, partially offsetting cost pressure.
Supply conditions also contributed to the strengthening market. Environmental inspections conducted across several manufacturing regions led to temporary operating restrictions for smaller rotary and autoclave units, reducing spot market availability. At the same time, social inventories gradually declined, making low-priced Calcium Silicate cargoes increasingly difficult to secure. Traders responded by maintaining elevated offers, supported by tighter inventories and stronger cost fundamentals.
Demand conditions improved compared with previous months. Downstream production activity continued to recover during May, and essential orders were released steadily into the market. Manufacturers reported an increase in new orders compared with the previous month, indicating an improvement in overall manufacturing demand and providing additional support to Calcium Silicate consumption.
The construction sector remained the primary demand driver. Demand for Calcium Silicate from building boards, ceiling systems, wall partitions, and insulation applications remained moderate across China during May. The residential property market continued to recover, supported by ongoing government stimulus measures aimed at urban development and housing market stabilization.
Market data highlighted this improvement. The transaction area of newly built commercial residential properties in 50 key cities reached approximately 13.62 million square meters, increasing by 2% month-on-month. The improvement reflected stable construction-related activity and healthier procurement from downstream buyers. Government initiatives involving urban renewal projects, financial support measures, and public service development further strengthened market sentiment.
Additional support came from the real estate sector. Typical property developers achieved sales of approximately 227.3 billion yuan during May, while secondary housing inventories continued to decline. In Shanghai, listed secondary-home inventory fell to approximately 309,200 units, more than 70,000 units lower than the same period last year, highlighting improving market absorption and confidence.
Export inquiries for Calcium Silicate remained consistent throughout May, allowing suppliers to maintain regular shipment schedules and balanced inventory levels.
According to Chemanalyst data, the Calcium Silicate market may face moderate pressure from seasonal slowdowns and warmer weather conditions. However, improving construction activity, stable export demand, and elevated feedstock costs are expected to provide underlying support for Calcium Silicate prices in the near term.
