All You Need To Know About Rockwool RWA45 100mm


RWA45’s Euro class A1 non-combustibility rating delivers the best fire protection. By using RWA45 in ceilings, walls, and flooring, fire damage can be mitigated. Insulation slabs constructed with RWA45 material have a 45 kg/m3 density and seven standard thicknesses from 25 to 100 mm.

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Rockwool RWA45 100mm is thermal, acoustic, and fire-resistant. In addition to boiler rooms and floors, these materials can insulate walls, ceilings, and roofs. Rockwool Slabs are effective sound absorbers due to their unique fiber structure. High-frequency coefficients make slabs perfect for this usage.

Applications For Rockwool Include The Following:

  • A wide variety of building types require different floors, walls, roofs, and other kinds of ventilation systems.
  • ceilings and walls that absorb sound and acoustical partition panels,
  • It is also possible to employ minute gaps, such as those beneath pitched tile roofing in homes, to fire-stop smaller regions.


• Resistant to water and condensation

• Economical

• Insulation against heat and sound

• Insulation against fire

• Withstands high temperatures

• Requires no maintenance

• Can have black or white tissues or aluminum foil facings

• Does not produce ozone

• Insulation against heat and sound

• Insulation against fire Possibility of resource depletion or contribution to climate change.

The Benefits That Rockwool Insulation Possesses

Effectiveness in the management of one’s use of energy

High R-value mineral wool insulation saves energy in construction. Mineral wool insulation can pay for itself in five months, according to experts. Rock wool insulation saves as much energy as it uses after five months. After five months, further energy savings are coincidental.


Mineral wool insulation lasts long because it’s made from steel slag and volcanic rock. This material’s R-value doesn’t degrade with sagging or settlement. Rock wool has a long lifespan and air holes in its stone strands. Air gaps keep the material breathable and prevent moisture build-up. Organic components are eliminated when basalt is heated at 1,600 degrees Celsius. Mold, mildew, and fungus can’t grow in Rockwool insulation because it’s inorganic.

Stopping the fires from getting worse

It’s unharmed by 1,000°C temperatures. Mineral wool insulation doesn’t catch fire in severe heat or flames and doesn’t emit smoke or other toxic by-products. Rock wool is used to keep fires from spreading between floors of a house or between homes in a neighborhood. It can limit a wildfire’s spread, providing firefighters more time to extinguish the flames and saving lives.


Install rock wool insulation in the bedroom and other noise-prone areas of the house. Sound waves are slowed by an insulating medium, which imprisons them. It’s used for insulating single-family homes and multi-family structures in noisy locations. Rock wool batts are noise-reducing due to their density.

Simple and Low-Cost to Establish

Rock wool is a great insulator because it’s dense and brittle. This material’s greater rigidity makes it easier to cut around electrical outlets and other obstructions. Rock wool insulation can be used and installed in several ways. You can buy it in rolls or batts that have been pre-cut. Compressing Rockwool into firm boards makes it easier to erect walls. Finally, ceilings, patios, and attics can be insulated with Rockwool loose-fill insulation.

A sharp knife makes cutting any form easy.

Rockwool RWA45 100mm known initially as ROXUL, is a fantastic substance that may be utilized to insulate buildings and residences. Even though this material may make it challenging to work with, it is pretty simple to shape using a sharp knife.

There are few options available for the blade, but you should have no issue fashioning it into your chosen form. You will discover that the finest tool to use with this material is a very sharp knife. The adaptability of Rockwool RWA45 is undoubtedly one of the product’s many strengths.

It is possible to cut the RWA45 acoustic insulation slab into any shape, including a semi-right angle. RWA45 is the ideal choice for any situation in which you require a more comfortable alternative to using a foam board. Using a sharp knife, Rockwool RWA45 can be easily fashioned into any desired form. In addition, Rockwool RWA45 is an attractive option for insulation purposes, whether you want to insulate a ceiling or any other space.


As can be seen, there are a significant number of benefits associated with using RWA45 Rockwool100mm insulation. You can get assistance determining whether or not this material is suitable for your house from professionals who specialize in insulation, architects, and other homeowners who have installed Rockwool insulation in their homes.

Sandy Jensen
Sandy Jensen, a celebrated writer in the home and garden niche, boasts over 12 years of hands-on experience. Her educational background includes a Bachelor’s in Landscape Architecture from Cornell University. Before joining our team in 2016, she worked as a landscape designer, combining her love for nature and design. Sandy's expertise shines through her articles, offering readers practical and aesthetically pleasing gardening tips. Off the clock, she enjoys hiking and nature photography, further nurturing her connection with the outdoors.

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