Description
Rockwool Blanket 75mm (Size 3m × 1m) delivers high-performance thermal and acoustic insulation for buildings, plants, and equipment where heat control, sound reduction, and fire safety matter. Manufacturers produce this blanket from dense, non-combustible mineral wool fibers engineered to trap air within a stable structure. That trapped air becomes the “working layer” that slows heat transfer and helps absorb noise. With a 75mm thickness, this blanket provides a stronger insulation barrier than thinner options, making it a smart choice for projects that face harsh sun exposure, temperature fluctuations, or strict performance requirements.
Rockwool Blanket Roll Reliable Thermal Insulation for Roofs, Ducts, and Equipment
The 75mm Rockwool blanket reduces heat gain and heat loss by forming a consistent insulating layer around surfaces. When you install it above ceilings, under roofing systems, or around HVAC ducts, it helps stabilize indoor temperatures. That means rooms feel cooler during hot days and retain warmth more effectively during cold periods. In commercial buildings, this performance supports better energy efficiency by reducing the workload on air conditioning and heating systems. In industrial settings, the blanket helps protect workers by reducing surface temperatures on hot equipment and pipework, while also lowering energy waste in process systems.
The 75mm Rockwool Blanket: Effective Noise Reduction in Busy Spaces
Rockwool fibers also excel at sound absorption. The blanket dampens airborne noise by converting sound energy into tiny vibrations within its fiber network. You can use it in partitions, ceilings, and service ducts to reduce echo, soften harsh sound, and limit noise transfer between rooms. It suits studios, churches, offices, schools, hospitals, workshops, generator rooms, and plant rooms where noise control improves comfort and productivity. If you pair it with a proper lining system—such as gypsum boards, acoustic panels, or metal cladding—you improve the total acoustic performance of the assembly even further.
Fire-Resistant Insulation that Adds Safety
Rockwool blanket improves fire safety because mineral wool does not support combustion. When installed correctly, it helps slow heat spread and adds an extra layer of protection to building elements and service runs. This feature makes it ideal for areas where fire performance matters, such as ducting, risers, plant rooms, and ceiling voids carrying electrical and mechanical services. While no insulation replaces a full fire-rated system on its own, Rockwool plays a strong supporting role in multi-layer fire safety designs.
Easy Handling, Fast Installation, and Clean Finishing
The 3m × 1m format makes this Rockwool blanket practical for installers who want quick coverage with minimal joins. You can measure, mark, and cut it to size using a sharp insulation knife or a serrated blade. The flexible blanket shape allows it to wrap around ducts and fit into irregular spaces more easily than rigid boards, while still delivering consistent coverage when you compress it lightly into place. Installers commonly secure it with mechanical pins, straps, wire mesh, or adhesive systems depending on the surface and application. For ducting or pipes, you can wrap and band it, then finish it with aluminum foil facing, cladding, or protective jacketing where needed.
Durable Performance in Real Jobsite Conditions
Rockwool blanket maintains its structure across a wide range of temperatures, and it resists sagging better than many light fiberglass alternatives when installed properly. It does not rot, and it does not encourage mold growth because the fibers themselves do not serve as food for fungi. In dusty or service-heavy environments, you can protect the insulation with proper facing or cladding to extend service life and maintain a clean finish. For best results, keep the blanket dry during storage and installation, and seal the system where moisture ingress could occur.
Common Uses for Rockwool Blanket 75mm
This product fits both residential and heavy-duty projects. Contractors and engineers frequently use Rockwool blanket 75mm for:
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Roof and ceiling insulation to reduce heat transfer
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HVAC duct wrapping for thermal control and noise reduction
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Pipe lagging and equipment insulation in plants and factories
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Generator rooms and compressor rooms to manage sound
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Acoustic improvement in halls, churches, studios, and offices
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Partition and ceiling void insulation in commercial buildings
Why Choose 75mm Thickness?
A 75mm blanket gives you a stronger insulation layer than 25mm or 50mm options. Choose 75mm when you want noticeable performance improvement, when you face intense roof heat, when you need better acoustic absorption, or when you want added safety margin for service insulation. It also works well where you aim to meet more demanding project specifications without increasing complexity—just install one thicker layer instead of layering multiple thinner products.
Available in bulk at Insulation Materials Kenya






