Fireproof Rock Wool Board Price Per Cubic Metre-Quotation Explanation Per Square Metre
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When engineering purchasers enquire about fireproof rock wool board, they often ask for both price per cubic metre and price per square metre. Many buyers are unclear about the conversion between cubic metre price and square metre price. Langfang Haochen Insulation Materials Co., Ltd explains the quotation logic here to help clients calculate project budgets.
Fireproof rock wool board is a Class A non-combustible inorganic insulation material. Manufacturers in the industry often quote by cubic metre or tonne, while construction budgets are mostly calculated by square metre. There is no fixed unified price. Quotation mainly depends on density, thickness, water repellency, vertical or horizontal fibre orientation, order quantity, tax and transport conditions.
I. Conversion between cubic metre price and square metre price
Cubic metre price: unit price for boards measuring 1m × 1m × 1m under fixed density
Formula for price per square metre: Price per cubic metre × board thickness (metres)
Example: 140kg/m³ water-repellent rock wool board, price 320 CNY/m³; thickness 0.1m (100mm)
Price per square metre = 320 × 0.1 = 32 CNY/㎡.
It can be seen that for rock wool boards of identical density, thicker boards bring higher cost per square metre.
II. Core factors affecting quotations of fireproof rock wool board
1. Density
Common grades: 80kg/m³, 100kg/m³, 120kg/m³, 140kg/m³, 160kg/m³, 180kg/m³. Under identical conditions, higher density means higher cubic metre price. Vertical-fibre water-repellent rock wool boards of 140kg/m³ and 160kg/m³ are widely adopted for external wall thermal insulation.
2. Board Thickness
Stock thickness ranges from 30–200mm. 50mm, 80mm, 100mm and 120mm are commonly used for engineering. Thickness directly determines material consumption per square metre.
3. Product Type
Vertical-fibre rock wool board meets tensile strength requirements and suits external thin-coat rendering systems, priced higher than ordinary horizontal-fibre rock wool board. Water-repellent rock wool board is suitable for humid environments such as external walls and roofs, with a higher unit price than standard rock wool board.
4. Fire Grade & Test Documentation
Both A1 and A2 fire rated rock wool boards are available. Orders requiring full test reports for fire acceptance will be quoted differently from regular stock orders.
5. Order Quantity, Transport & Taxation
Large-volume engineering orders qualify for ex-factory discounts; small sporadic purchases carry higher unit prices. Quotations distinguish net price, tax-inclusive price and price including freight.
III. Purchasing Tips to Avoid Pitfalls
Low-cost fireproof rock wool boards available on the market vary greatly in quality. Some products feature high shot content, unqualified acidity coefficient and are prone to pulverisation and falling off. External wall insulation is a critical fire protection component. Do not compare price alone; prioritise qualified products with complete documents from formal original manufacturers.
Langfang Haochen Insulation Materials Co., Ltd specialises in manufacturing Class A fireproof rock wool boards. We also supply a full set of supporting insulation materials including rock wool blankets, rock wool strips, rock wool pipe sections, rock wool composite panels, mesh cloth and insulation anchors. Non-standard custom specifications are supported, offering one-stop supply for various building insulation projects in Beijing, Tianjin, Hebei and surrounding regions.
For quotation enquiries, please provide board thickness, density, required quantity and delivery address to obtain accurate ex-factory prices.
