Marine Boiler Casing Insulation Rockwool Blanket – High‑Performance Thermal Shield
Engineers and procurement managers in shipbuilding, offshore platforms, and marine retro‑fit projects demand an insulation solution that tolerates extreme temperature cycles, resists moisture, and complies with strict classification society rules. Our marine boiler casing insulation rockwool blanket delivers exactly that: a lightweight, fire‑resistant, and acoustically dampening layer designed for the harsh marine environment.
Why This Blanket Stands Out
When a boiler casing is surrounded by a high‑temperature rockwool blanket, heat loss drops dramatically, fuel consumption improves, and the surrounding deck structures stay cooler. Our product is engineered to meet IMO and ABS thermal‑efficiency criteria while offering the mechanical flexibility needed for curved casings and confined spaces.
- Superior fire performance: non‑combustible, Class A fire rating, and zero smoke emission.
- Low thermal conductivity: typical λ = 0.038 W/m·K, reducing heat transfer by up to 30 % compared with conventional mineral wool.
- Moisture‑resistant binders: prevent water ingress and maintain insulating value after prolonged exposure to sea spray.
- Mechanical resilience: compressive strength 150 kPa at 100 °C, suitable for high‑pressure boiler environments.
- Easy installation: pre‑cut panels and flexible blankets conform to irregular shapes, cutting time on site by up to 40 %.
How the Blanket Works
The blanket is composed of high‑temperature rockwool fibers bonded with a marine‑grade phenolic resin. The fibrous matrix traps air, the primary insulating medium, while the resin provides structural integrity and shields the fibers from salt‑induced corrosion. When wrapped around a boiler casing, the blanket creates a continuous thermal barrier that limits radiant and conductive heat flow, while also dampening vibration‑generated noise.
Typical Specifications (customizable per order)
| Parameter | Standard Range | Typical Value |
|---|---|---|
| Material | High‑temperature rockwool + phenolic binder | Rockwool 1200 kg/m³ |
| Thickness | 20 mm – 100 mm (custom) | 50 mm |
| Thermal Conductivity (λ) | 0.035 – 0.042 W/m·K | 0.038 W/m·K |
| Compressive Strength | 120 – 180 kPa @ 100 °C | 150 kPa |
| Density | 100 – 140 kg/m³ | 120 kg/m³ |
| Operating Temp. | -30 °C to +650 °C | +600 °C |
| Fire Rating | Class A, EN 13501‑1 | Class A |
Application Scenarios
The blanket is routinely installed in the following marine settings:
- New‑build cargo vessels – insulating main‑propulsion boiler casings to meet energy‑efficiency clauses in SOLAS.
- Offshore platform steam generators – protecting heat‑exposed pipework from seawater corrosion.
- Retro‑fit of existing ferries – replacing deteriorated mineral wool with a lighter, longer‑lasting solution.
- Naval auxiliary boilers – ensuring compliance with naval classification standards for fire safety.
Competitive Advantages
Unlike generic construction‑grade insulation, our marine boiler casing insulation rockwool blanket is engineered for the marine market from the ground up. The product’s moisture‑resistant binder prevents salt crystallization, a common cause of insulation degradation on vessels. Additionally, the blanket’s low density reduces added weight, a critical factor for stability calculations.
Our production facilities are ISO‑9001 certified, and each batch undergoes third‑party testing for fire classification, thermal performance, and mechanical strength. Documentation packages include a Certificate of Conformity, Material Safety Data Sheet, and optional compliance reports for ABS, DNV‑GL, and Lloyd’s Register.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for custom‑cut blankets?
Our standard MOQ is 5 sqm per thickness. For larger projects we can reduce the MOQ to 2 sqm with a short lead‑time surcharge.
Can the blanket be tailored to irregular boiler shapes?
Yes. We offer on‑site cutting services and pre‑fabricated curved panels. Provide CAD drawings and we’ll quote a per‑unit price based on geometry.
What is the typical lead time after order confirmation?
Standard production runs ship within 15‑30 days. For urgent projects, express manufacturing can be arranged in 7‑10 days at an additional cost.
Do you provide warranty or after‑sales support?
All blankets carry a 24‑month warranty against material defects. Our technical team is available 24/7 for installation guidance and troubleshooting.
Get Your Quote Today
Ready to reduce fuel consumption and meet classification‑society requirements? Contact our sales engineering team for a no‑obligation quotation, sample kit, or technical discussion.