How Much Is Rock Wool Board Per Square Metre? Key Factors Affecting Rock Wool Board Quotation
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Many purchasers of insulation engineering projects enquire about the price of rock wool board per square metre. Here is a unified explanation: rock wool board has no fixed unit price. The cost per square metre is determined by density, thickness, water repellency, vertical or horizontal fibre orientation, order quantity, tax and freight terms and other factors. Langfang Haochen Insulation Materials Co., Ltd explains key pricing points of rock wool boards to help clients quickly calculate project budgets.
Rock wool board is Class A non-combustible insulation material made from melted basalt. Standard stock dimension is 1200mm×600mm, with density ranging from 80–200kg/m³ and thickness from 30–200mm. With identical dimensions, higher density and greater thickness consume more raw materials, leading to a higher price per square metre. Vertical-fibre water-repellent rock wool boards of 140kg/m³ and 160kg/m³ are widely selected for external wall thermal insulation projects; horizontal-fibre rock wool boards are commonly used for roof insulation, machine room sound absorption and equipment insulation.
Core factors influencing the price of rock wool board per square metre
1. Density
80kg/m³ and 100kg/m³ grades are mostly used for indoor sound absorption and simple enclosures; 120–140kg/m³ is the common specification for external walls; high-density rock wool boards of 160–180kg/m³ are applied to curtain walls and steel structure fire protection with markedly higher costs.
2. Board Thickness
50mm, 80mm, 100mm, 120mm and 150mm are widely used in engineering. Increased thickness raises raw material consumption per unit area, which pushes up the price accordingly.
3. Manufacturing Type: Vertical-fibre vs Horizontal-fibre Rock Wool Board
Vertical-fibre rock wool board features vertically arranged fibres, meeting tensile strength requirements for external thin-coat rendering systems. Its complex production process makes it more expensive than ordinary horizontal-fibre rock wool board.
4. Water Repellent Performance
Ordinary rock wool board has no waterproof treatment; water-repellent rock wool board is blended with water repellent agent, suitable for external walls, roofs and humid environments at a higher unit price.
5. Order Quantity & Delivery Terms
Large bulk orders for engineering projects qualify for volume discounts from manufacturers; small scattered orders carry higher unit prices. Quotations also differ between ex-factory price, tax-inclusive price and price including logistics freight. Transport expenses for remote projects will be included in the overall project cost.
6. Requirements for Test Documentation
Engineering orders requiring manufacturers to supply combustion performance reports and type inspection certificates for fire acceptance differ in quotation from regular stock orders.
Purchasing Reminder
Low-cost rock wool products on the market vary greatly in quality. Some low-priced boards fail to meet the acidity coefficient standard, prone to fibre pulverisation and insufficient tensile strength, bringing risks of falling off in later service. External wall insulation is a critical fire and energy-saving sub-project. It is recommended to choose qualified products with complete documentation from formal manufacturers.
Langfang Haochen Insulation Materials Co., Ltd supplies a full range of fire insulation materials including rock wool boards, rock wool blankets, rock wool strips, rock wool pipe sections, rock wool composite panels, mesh cloth and insulation anchors. Custom rock wool products of various specifications are available with sufficient stock. We can calculate accurate per-square-metre quotations for rock wool boards according to project drawing parameters and deliver one-stop supply services. Engineering firms are welcome to send thickness, density, required quantity and delivery address to obtain accurate ex-factory quotations.
