ROCKWOOL ProRox SL industrial stone wool slab

ROCKWOOL stone wool slabs for insulating equipment walls, boilers, columns, tanks and hot ducts in industry, in six grades by density and service temperature.

Thickness: 25–100 mm
Density: 60–160 kg/m³
Maximum service temperature: 450–850 °C ASTM C411 / C447

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Your selection

ROCKWOOL ProRox SL 950 SA · Thickness 50 mm

Availability: Please enquire

Sheet size: 600 × 1,200 mm60 × 120 cm
Pack: 6 sheets / pack
Area per pack: 4.32 m²
Density: 80 kg/m³
Facing (foil or unfaced)

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Technical values for SL 950 SA

Maximum service temperature: 650 °C
Thermal conductivity (λ)at 50 °C mean: 0.038 W/m·K

See all models and sizes Manufacturer documents Technical specifications

Product details

Industrial and high-temperature insulationStone wool (rock wool)ROCKWOOL

Stone wool slabs for high-temperature work · 6 grades, 60–160 kg/m³

Thickness: 25–100 mm
Density: 60–160 kg/m³
Maximum service temperature: 450–850 °C ASTM C411 / C447
Thermal conductivity (λ): 0.038–0.039 W/m·K at 50 °C mean · ASTM C177

What is it?

ProRox SL is a stone wool slab range for industrial thermal insulation on flat surfaces such as equipment walls, boilers, columns and tanks. Grades: SL 930 SA (60 kg/m³, up to 450 °C), SL 950 SA (80), SL 960 SA (100), SL 970 SA (128) and SL 540 SA (160), rated up to 650 °C, and SL 978 SA (110 kg/m³), rated up to 850 °C, according to ROCKWOOL Thailand data sheets.

What is it made of?

Stone wool (rock wool) · Facing: Unfaced (SL 930 SA: one-side aluminium foil or glass tissue facing on request) · Slab

Which sizes are available?

Thickness 25–100 mm · 60–160 kg/m³ — Choose model and size

Limitations to know

Values here are material properties from the manufacturer's documents. The thickness you need depends on the surface temperature, the target outer-surface temperature and the cladding — have it calculated by the designer.

Where does the data come from?

ProRox SL 950 SA — 200 351TH-08/25 V3 (EN) · ProRox SL 930 SA — 200 349TH-08/25 V3 (EN)

Technical data from the manufacturer's documents ROCKWOOL · Checked 13 Oct 2026

Technical specifications

Technical values for each model from the manufacturer's data sheet. They apply to every thickness of that model unless a condition is given.

SL 930 SA

Density: 60 kg/m³
Maximum service temperature: 450 °C
Densitynominal density: 60 kg/m³
Thermal conductivity (λ)at 50 °C mean: 0.039 W/m·K
Thermal conductivity (λ) at 100 °Cat 100 °C mean: 0.047 W/m·K
Thermal conductivity (λ) at 150 °Cat 150 °C mean: 0.054 W/m·K
Thermal conductivity (λ) at 200 °Cat 200 °C mean: 0.064 W/m·K
Thermal conductivity (λ) at 250 °Cat 250 °C mean: 0.075 W/m·K

SL 950 SA

Density: 80 kg/m³
Maximum service temperature: 650 °C
Densitynominal density: 80 kg/m³
Thermal conductivity (λ)at 50 °C mean: 0.038 W/m·K
Thermal conductivity (λ) at 100 °Cat 100 °C mean: 0.046 W/m·K
Thermal conductivity (λ) at 150 °Cat 150 °C mean: 0.053 W/m·K
Thermal conductivity (λ) at 200 °Cat 200 °C mean: 0.062 W/m·K
Thermal conductivity (λ) at 250 °Cat 250 °C mean: 0.072 W/m·K
Thermal conductivity (λ) at 300 °Cat 300 °C mean: 0.081 W/m·K

SL 960 SA

Density: 100 kg/m³
Maximum service temperature: 650 °C
Densitynominal density: 100 kg/m³
Thermal conductivity (λ)at 50 °C mean: 0.038 W/m·K
Thermal conductivity (λ) at 100 °Cat 100 °C mean: 0.044 W/m·K
Thermal conductivity (λ) at 150 °Cat 150 °C mean: 0.050 W/m·K
Thermal conductivity (λ) at 200 °Cat 200 °C mean: 0.057 W/m·K
Thermal conductivity (λ) at 250 °Cat 250 °C mean: 0.065 W/m·K
Thermal conductivity (λ) at 300 °Cat 300 °C mean: 0.075 W/m·K

SL 978 SA

Density: 110 kg/m³
Maximum service temperature: 850 °C
Densitynominal density: 110 kg/m³
Thermal conductivity (λ)at 50 °C mean: 0.038 W/m·K
Thermal conductivity (λ) at 100 °Cat 100 °C mean: 0.045 W/m·K
Thermal conductivity (λ) at 150 °Cat 150 °C mean: 0.053 W/m·K
Thermal conductivity (λ) at 200 °Cat 200 °C mean: 0.061 W/m·K
Thermal conductivity (λ) at 250 °Cat 250 °C mean: 0.072 W/m·K
Thermal conductivity (λ) at 300 °Cat 300 °C mean: 0.083 W/m·K

SL 970 SA

Density: 128 kg/m³
Maximum service temperature: 650 °C
Densitynominal density: 128 kg/m³
Thermal conductivity (λ)at 50 °C mean: 0.038 W/m·K
Thermal conductivity (λ) at 100 °Cat 100 °C mean: 0.043 W/m·K
Thermal conductivity (λ) at 150 °Cat 150 °C mean: 0.049 W/m·K
Thermal conductivity (λ) at 200 °Cat 200 °C mean: 0.056 W/m·K
Thermal conductivity (λ) at 250 °Cat 250 °C mean: 0.064 W/m·K
Thermal conductivity (λ) at 300 °Cat 300 °C mean: 0.074 W/m·K

SL 540 SA

Density: 160 kg/m³
Maximum service temperature: 650 °C
Densitynominal density: 160 kg/m³
Thermal conductivity (λ)at 50 °C mean: 0.038 W/m·K
Thermal conductivity (λ) at 100 °Cat 100 °C mean: 0.045 W/m·K
Thermal conductivity (λ) at 150 °Cat 150 °C mean: 0.052 W/m·K
Thermal conductivity (λ) at 200 °Cat 200 °C mean: 0.062 W/m·K
Thermal conductivity (λ) at 250 °Cat 250 °C mean: 0.070 W/m·K
Thermal conductivity (λ) at 300 °Cat 300 °C mean: 0.079 W/m·K

All models

Reaction to fire: Euroclass A1 · ASTM E84 passed (flame spread / smoke development) all models (same in each model's data sheet)
Linear shrinkage: less than 2% (at max. service temperature)
Chloride / use over stainless steel: less than 10 ppm · conforms to ASTM C795
Moisture absorption: less than 1% by weight
Water absorption: < 1 kg/m²

Test standards and sources

Maximum service temperature — ASTM C411 / C447 · ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Density (nominal density) — ASTM C303 · ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Thermal conductivity (λ) (at 50 °C mean) — ASTM C177 · ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Thermal conductivity (λ) at 100 °C (at 100 °C mean) — ASTM C177 · ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Thermal conductivity (λ) at 150 °C (at 150 °C mean) — ASTM C177 · ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Thermal conductivity (λ) at 200 °C (at 200 °C mean) — ASTM C177 · ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Thermal conductivity (λ) at 250 °C (at 250 °C mean) — ASTM C177 · ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Thermal conductivity (λ) at 300 °C (at 300 °C mean) — ASTM C177 · ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Reaction to fire (all models (same in each model's data sheet)) — EN 13501-1 / ASTM E84 · ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Linear shrinkage — ASTM C356 · ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Chloride / use over stainless steel — ASTM C871 / ASTM C692 · ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Moisture absorption — ASTM C1104 / C1104M · ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), p. 1
Water absorption — EN 1609 · ProRox SL 950 SA — 200 351TH-08/25 V3 (EN), ProRox SL 930 SA — 200 349TH-08/25 V3 (EN), ProRox SL 960 SA — 200 339TH-08/25 V3 (EN), ProRox SL 978 SA — 200 333TH-08/25 V3 (EN), ProRox SL 970 SA — 200 340TH-08/25 V3 (EN), ProRox SL 540 SA — 200 336TH-08/25 V3 (EN), p. 1
Distributor listing — Sizes with this label come from a Thai distributor's product listing, not from the manufacturer: 3T Insulation (distributor) — ProRox SL product listing
Pack — Pack quantities are based on sales information in Thailand. Please confirm the pack contents before ordering. 3T Insulation (distributor) — ProRox SL product listing

Models and sizes available

Sheet sizes 60 × 120 cm, 90 × 120 cm · thicknesses 25, 50, 75, 80, 100 mm. Sizes differ by model — all are listed below.

SL 930 SA · 60 kg/m³

Semi-rigid slab for general work up to 450 °C

Thickness 50 mm

600 × 1,200 mm60 × 120 cm 6 sheets / pack4.32 m²/packPlease enquire Ask price

Thickness 75 mm

600 × 1,200 mm60 × 120 cm 4 sheets / pack2.88 m²/packPlease enquire Ask price

Thickness 100 mm

600 × 1,200 mm60 × 120 cm 3 sheets / pack2.16 m²/packMade to order / Please enquire Ask price

SL 950 SA · 80 kg/m³

Rigid slab for boilers, columns and vessels at intermediate temperatures

Thickness 25 mm

600 × 1,200 mm60 × 120 cm 12 sheets / pack8.64 m²/packPlease enquireDistributor listing Ask price

Thickness 50 mm

600 × 1,200 mm60 × 120 cm 6 sheets / pack4.32 m²/packPlease enquire Ask price
900 × 1,200 mm90 × 120 cm Please enquire Ask price

Thickness 75 mm

600 × 1,200 mm60 × 120 cm 4 sheets / pack2.88 m²/packPlease enquire Ask price

Thickness 100 mm

600 × 1,200 mm60 × 120 cm 3 sheets / pack2.16 m²/packPlease enquire Ask price

SL 960 SA · 100 kg/m³

Thickness 25 mm

600 × 1,200 mm60 × 120 cm 12 sheets / pack8.64 m²/packPlease enquireDistributor listing Ask price

Thickness 50 mm

600 × 1,200 mm60 × 120 cm Please enquire Ask price

Thickness 75 mm

600 × 1,200 mm60 × 120 cm 4 sheets / pack2.88 m²/packPlease enquireDistributor listing Ask price

Thickness 100 mm

600 × 1,200 mm60 × 120 cm 3 sheets / pack2.16 m²/packPlease enquire Ask price

SL 978 SA · 110 kg/m³

Max. service temperature 850 °C

Thickness 50 mm

600 × 1,200 mm60 × 120 cm 6 sheets / pack4.32 m²/packPlease enquire Ask price

SL 970 SA · 128 kg/m³

Thickness 25 mm

600 × 1,200 mm60 × 120 cm 12 sheets / pack8.64 m²/packMade to order / Please enquireDistributor listing Ask price

Thickness 50 mm

600 × 1,200 mm60 × 120 cm 6 sheets / pack4.32 m²/packMade to order / Please enquire Ask price

Thickness 75 mm

600 × 1,200 mm60 × 120 cm 4 sheets / pack2.88 m²/packMade to order / Please enquire Ask price

Thickness 100 mm

600 × 1,200 mm60 × 120 cm 3 sheets / pack2.16 m²/packMade to order / Please enquire Ask price

SL 540 SA · 160 kg/m³

Thickness 50 mm

600 × 1,200 mm60 × 120 cm 4 sheets / pack2.88 m²/packPlease enquire Ask price

Thickness 80 mm

600 × 1,200 mm60 × 120 cm 3 sheets / pack2.16 m²/packPlease enquire Ask price

Pack quantities are based on sales information in Thailand. Please confirm the pack contents before ordering. Area per pack = sheet size × sheets per pack.

Applications

FactoriesFactory roofs, machine noise and hot pipework

Highlights

Six grades, 60–160 kg/m³
Max. service temperature 450–850 °C by grade
Euroclass A1, non-combustible
Low chloride, suitable over stainless steel (ASTM C795)

Manufacturer documents

Helpful before you choose

Not sure which model suits your job?

Send the area details or site photos — we'll suggest the model and quantity

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ROCKWOOL ProRox SL industrial stone wool slab

Choose model and size

ROCKWOOL ProRox SL 930 SA · Thickness 50 mm

ROCKWOOL ProRox SL 930 SA · Thickness 75 mm

ROCKWOOL ProRox SL 930 SA · Thickness 100 mm

ROCKWOOL ProRox SL 950 SA · Thickness 25 mm

ROCKWOOL ProRox SL 950 SA · Thickness 50 mm

ROCKWOOL ProRox SL 950 SA · Thickness 75 mm

ROCKWOOL ProRox SL 950 SA · Thickness 100 mm

ROCKWOOL ProRox SL 950 SA · Thickness 50 mm

ROCKWOOL ProRox SL 960 SA · Thickness 25 mm

ROCKWOOL ProRox SL 960 SA · Thickness 50 mm

ROCKWOOL ProRox SL 960 SA · Thickness 75 mm

ROCKWOOL ProRox SL 960 SA · Thickness 100 mm

ROCKWOOL ProRox SL 978 SA · Thickness 50 mm

ROCKWOOL ProRox SL 970 SA · Thickness 25 mm

ROCKWOOL ProRox SL 970 SA · Thickness 50 mm

ROCKWOOL ProRox SL 970 SA · Thickness 75 mm

ROCKWOOL ProRox SL 970 SA · Thickness 100 mm

ROCKWOOL ProRox SL 540 SA · Thickness 50 mm

ROCKWOOL ProRox SL 540 SA · Thickness 80 mm

Product details

What is it?

What is it made of?

Which sizes are available?

Limitations to know

Where does the data come from?

Technical specifications

SL 930 SA

SL 950 SA

SL 960 SA

SL 978 SA

SL 970 SA

SL 540 SA

All models

Models and sizes available

SL 930 SA · 60 kg/m³

SL 950 SA · 80 kg/m³

SL 960 SA · 100 kg/m³

SL 978 SA · 110 kg/m³

SL 970 SA · 128 kg/m³

SL 540 SA · 160 kg/m³

Applications

Highlights

Manufacturer documents

Related products

Alternatives

ROCKWOOL ProRox BL

ROCKWOOL ProRox WM

Used together

ASAWA PIN

Helpful before you choose

Not sure which model suits your job?