Industrial rock wool and ceramic fibre insulation for pipes, boilers and furnaces

Vulcanite Armor is a wire mesh stitched rock wool blanket for pipework, vessels and ducts. Three grades, priced per roll, with delivery across South Africa or collection from Centurion.

Rated up to 750°C. Rolls from R1 254,51 incl. VAT (75 mm × 3 m).

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Packed rolls of Vulcanite Armor rock wool blanket stacked in a warehouse
  • Rated up to 750°C hot-surface
  • ASTM C592 Type I and III compliant
  • Flame Spread Index 0 (ASTM E84)
  • Prices published per roll, incl. VAT

Three rock wool grades up to 750°C, plus ceramic fibre to 1050°C

The three rock wool grades come in three or four thicknesses each, 40 to 100mm, all 1200mm wide: 40 and 50mm as 5m rolls (6 m² per roll); 75 and 100mm as 3m rolls (3.6 m² per roll). Vulcanite ProTherm ceramic fibre blanket is supplied in one active size, 25mm × 610mm, 7.32m rolls, sold in bags of 2. Prices are per roll, or per bag for the ceramic fibre blanket, and include VAT.

Compare the range

Datasheet values at each stated mean temperature. Choose the product whose temperature rating covers your application, then check conductivity at the mean temperature of your application. A "not published" cell means the manufacturer does not publish that figure for that product.

Blanket 80, Blanket 100, Blanket 120, Ceramic 96 compared on density, temperature rating, thermal conductivity and shrinkage where published
Property Blanket 80Blanket 100Blanket 120Ceramic 96
Density (EN1602) 80 kg/m³100 kg/m³120 kg/m³96 kg/m³
Hot surface performance (ASTM C411 / ASTM C447) 650 °C700 °C750 °Cnot published
k-value at 50°C mean (ASTM C335) 0.038 W/mK0.039 W/mK0.030 W/mKnot published
k-value at 100°C mean (ASTM C335) 0.045 W/mK0.045 W/mK0.035 W/mKnot published
k-value at 150°C mean (ASTM C335) 0.053 W/mK0.053 W/mK0.053 W/mKnot published
k-value at 200°C mean (ASTM C335) 0.058 W/mK0.057 W/mK0.057 W/mKnot published
k-value at 250°C mean (ASTM C335) 0.069 W/mK0.066 W/mK0.066 W/mKnot published
k-value at 300°C mean (ASTM C335) 0.081 W/mK0.078 W/mK0.078 W/mKnot published
k-value at 350°C mean (ASTM C335) 0.094 W/mK0.089 W/mK0.089 W/mKnot published
Linear shrinkage (ASTM C356) max 0.4 %max 3.5 %max 4 %not published
Working temperature (Vulcanite ProTherm datasheet) not publishednot publishednot published1050 °C
k-value at 400°C mean (Vulcanite ProTherm datasheet, 128 kg/m³ blanket) not publishednot publishednot published0.090 W/mK
k-value at 800°C mean (Vulcanite ProTherm datasheet, 128 kg/m³ blanket) not publishednot publishednot published0.160 W/mK

Full parameters, including smoke developed, water absorption and vapour sorption, are on each grade page and its datasheet. Per roll and per m² prices for every grade are on the price list. Buying for a plant or a contractor? See rock wool and mineral wool supply in South Africa.

Rock wool questions

Which rockwool grade do I need for 700°C?

Choose on the hot-surface temperature. Blanket 80 is rated to 650°C, Blanket 100 to 700°C and Blanket 120 to 750°C, tested per ASTM C411 and C447. For a 700°C surface, Blanket 100 is the lowest grade rated to that temperature.

What is the price of rockwool per roll?

Vulcanite Armor rock wool rolls cost from R1 254,51 (Blanket 80, 75 mm × 3 m) to R2 067,27 (Blanket 120, 100 mm × 3 m), incl. VAT. The price list shows every roll per roll and per m².

Do you deliver rockwool outside Gauteng?

Delivery can be chosen at checkout for all nine provinces: R500,00 Incl. VAT in Gauteng, R1 000,00 Incl. VAT elsewhere. Free over R10 000,00 Incl. VAT subtotal. Collection from Centurion is also available.

How quickly are rockwool rolls dispatched?

Sizes in stock: dispatch within 24 hours, delivery within 72 hours. Sizes on backorder: we confirm the dispatch date by email within one working day of your order. Each grade page shows which sizes are in stock.

Is rockwool the same as stone wool?

Yes. Rock wool, also called stone wool, is the type of mineral wool made from volcanic rock. Vulcanite Armor is a rock wool blanket made from basalt and dolomite.