rock wool
Rockwool Pipe Insulation for Steam Pipes
Pre-formed rockwool pipe insulation sections for steam pipes, HVAC and industrial piping. Rigid pipe insulation material rated 750C, Class A1 non-combustible.
Rockwool Insulation Slabs
High-performance stone wool boards for building envelope, industrial, and HVAC applications. A1 fire-rated, thermally efficient, and acoustically superior. Available in densities from 40–200 kg/m³, thicknesses 25–200mm.
A1 Fire Rated (EN 13501-1)
Exported to 50+ Countries
certificate
Factory-Direct Wholesale Pricing
PROVEN IN THE FIELD
Rockwool Across Every Application
Building envelopes, HVAC, industrial piping, and passive fire protection — explore real installation scenes of our rockwool insulation boards, blankets, and pipe sections. Factory-direct,ISO-certified, shipped to 50+ countries.
Rock wool pipe section for heating copper pipes
Rock wool insulation for industrial duct elbows
Basalt rock wool board for storage tank insulation
Rock wool fire protection for steel beam, cross‑section diagram
Rock wool cladding for chemical plant pipe elbow
Rock wool board for partition wall fire‑acoustic insulation
Basalt rock wool board building exterior wall installation
rock wool external wall insulation scaffold construction
ROCKWOOL BOARD FORMS
Rockwool Board in Every Form & Density
Explore our rockwool insulation boards (slabs) across densities 40–200 kg/m³ and thicknesses 25–200mm — standard slabs,high-density boards, sandwich-panel cores, and custom-cut shapes for walls, roofs, and equipment. Request a quote.
Multi‑size rock wool board samples display
Rock wool board cutting on production line
Stacked rock wool insulation board in factory warehouse
Export packed basalt rock wool board
Textured rock wool slab on production conveyor
packed basalt rock wool board
Bulk packaged rock wool rolls in factory warehouse storage
Product Deep Dive
What Are Rockwool Insulation Slabs?
Rockwool insulation slabs — also known as stone wool boards or mineral wool panels — are rigid, high-density thermal insulation products manufactured from natural basalt rock and recycled slag. The raw materials are melted at over 1,450°C and spun into fine fibers, then compressed into boards of precise density and thickness.
Unlike flexible blankets or loose-fill insulation, rockwool slabs offer structural rigidity while maintaining exceptional thermal, acoustic, and fire-resistant properties. This makes them the preferred choice for:
- External wall insulation systems (ETICS/EIFS)
- Sandwich panel cores for cold storage and clean rooms
- Flat roof insulation with high compressive strength
- Partition walls requiring fire-rated separation
- Industrial equipment and high-temperature piping
Our slabs are available in densities from 40 to 200 kg/m³ and thicknesses from 25mm to 200mm, ensuring a perfect match for every application — from lightweight residential cavity walls to heavy-duty industrial furnace linings.
Performance & Compliance
Engineered to outperform
Every rockwool slab we ship is backed by third-party lab testing, ISO 9001 traceability, and on-site QC sampling. Here's what sets our stone wool apart.
Thermal Conductivity
λ ≤ 0.036–0.046 W/mK (depending on density and temperature)
Service Temperature
Up to 650°C (standard), 1,000°C (high-temperature grade)
Fire Classification
Euroclass A1 per EN 13501-1, ASTM E136 non-combustible
Compressive Strength
10–80 kPa at 10% deformation (density-dependent)
Rockwool insulation by the numbers
- 1,000°C
- Max Service Temperature
- 0.036 W/mK
- Thermal Conductivity
- 40–200 kg/m³
- Density Range
- 50+
- Exported Countries
- 80,000 Tons
- Annual Production Capacity
Need a specific density or thickness?
Tell us your project requirements — operating temperature, load conditions, and target R-value — and our engineers will recommend the optimal slab specification.
Why choose Rosetexwool?
We deliver industrial-grade thermal solutions trusted by engineers worldwide.
Non-Combustible A1 Rating
Withstands temperatures up to 1,000°C. Does not contribute to flame spread or smoke development — critical for passive fire protection in commercial and industrial buildings.
Superior Thermal Performance
Thermal conductivity as low as 0.036 W/mK. Reduces HVAC energy consumption by 25–40% in building envelopes, paying for itself within 2–3 years.
Excellent Acoustic Absorption
Open fiber structure delivers NRC values up to 1.0. Ideal for partition walls, cinema halls, recording studios, and mechanical room soundproofing.
Water-Repellent & Vapor-Permeable
Hydrophobic treatment prevents moisture absorption while allowing walls to breathe. Maintains thermal performance even in high-humidity environments.
Sustainable & Recyclable
Made from abundant basalt rock — a virtually inexhaustible natural resource. 100% recyclable at end of life with no loss of performance.
Custom Dimensions Available
Standard slabs: 600×1200mm, thickness 25–200mm. Custom cutting service for non-standard sizes. High-density options (up to 200 kg/m³) for load-bearing applications.
Products
Solutions for your needs
Explore our recommended products tailored to your application requirements.
rock wool
Rockwool Insulation Slabs — Rock Wool Board
Basalt rockwool insulation slabs (also rock wool board) — Class A non-combustible rockwool material. Fire-safe, water-repellent, sound-absorbing.
rock wool
Rockwool Insulation Blanket (Rock Wool Blanket)
Flexible rockwool insulation blanket (also rock wool blanket) for large area coverage, pipe and equipment thermal insulation.
Support
Frequently asked questions
What is the difference between rockwool and rock wool?+
They refer to the same material — stone wool insulation made from molten basalt rock. "Rockwool" (one word) is the common brand-derived term, while "rock wool" (two words) is the generic industry name. Both describe mineral wool insulation produced by spinning molten rock into fine fibers.
What density of rockwool slab should I choose?+
It depends on your application:
40–60 kg/m³: Lightweight thermal insulation for cavity walls and timber frames 80–100 kg/m³: General-purpose building insulation, partition walls, sandwich panel cores 120–150 kg/m³: High-compressive-strength applications, flat roof insulation, load-bearing floors 160–200 kg/m³: Industrial high-temperature insulation, furnace linings, marine applications Contact our engineers with your project specifications for a precise recommendation.
What certifications do your rockwool slabs have?+
Our rockwool insulation products are tested to:
EN 13501-1 Euroclass A1 — Non-combustible (highest fire classification) ASTM E136 — Non-combustibility for North American markets ISO 9001 — Quality management system CE Marking — European conformity ASTM C612 — Mineral fiber block and board thermal insulation Additional certifications available upon request (FM, UL, DNV, etc.)
Can rockwool slabs be cut to custom sizes?+
Yes. Standard slab dimensions are 600×1200mm (or 600×1000mm), but we offer custom cutting services for any non-standard size. Simply provide your cutting specifications — including thickness (25–200mm), length, width, and edge profile requirements — and we'll deliver precision-cut slabs ready for installation.
Is rockwool insulation waterproof?+
Rockwool is water-repellent (hydrophobic) but not fully waterproof. Our slabs are treated with a hydrophobic agent that repels surface moisture and prevents water absorption under normal conditions. For applications with prolonged water exposure (e.g., underground, submerged), we recommend additional waterproofing measures or our specialized high-density water-resistant grade.
How does rockwool compare to fiberglass insulation?+
Rockwool outperforms fiberglass in several key areas:
Fire resistance: Rockwool is A1 non-combustible (up to 1,000°C); fiberglass melts at ~540°C Acoustic performance: Rockwool's denser fiber structure provides ~30% better sound absorption Water resistance: Rockwool repels moisture; fiberglass absorbs it, losing R-value Dimensional stability: Rockwool won't sag or shrink over time Cost: Rockwool is ~20–40% more expensive upfront but offers better long-term value
What is the minimum order quantity (MOQ)?+
Our standard MOQ is 1,000 m² per specification. For trial orders or sample requests, we offer smaller quantities — typically 50–100 m². Contact our sales team for current MOQ and pricing based on your required density, thickness, and delivery destination.
What is the typical delivery time?+
Standard orders ship within 15–25 days after order confirmation. For urgent requirements, we can arrange partial shipments within 7–10 days. Delivery time to your port depends on the destination — typically 15–30 days by sea freight. Door-to-door delivery is also available.