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Rock Wool Insulation: What It Is And Where To Use It

Apr. 29, 2021

Rock Wool Insulation: What It Is And Where To Use It

Rock wool sandwich panel machine suppliers will share this article with you.

The importance of a well-insulated house cannot be overstated: proper size and installation of insulation can reduce energy use, keep you warmer in winter and cooler in summer, and save you money and lower energy bills.

For homeowners and home builders, fiberglass insulation has been the choice of insulation materials for decades. Although fiberglass is still very popular, a relatively new insulation material is making progress and is making headlines in the insulation industry. This is called rock wool insulation.

What is rock wool insulation?

Rock wool, also known as mineral wool, has cotton wool that is easy to install, similar to fiberglass. But rock wool is not made of fluffy glass fibers, but — you guessed it — rock, which seems impossible. The following is a brief description of the manufacturing process.

The natural rock is heated in a furnace to about 3000 degrees until it melts into a liquid. This magma-like liquid is exposed to high-pressure air or steam and then spins long fiber bundles at ultra-high speeds. These threads are captured and compressed into thick mats, which are then cut into convenient-sized insulating batting.

Rock wool insulation material is a rock-based mineral fiber thermal insulation material made of basalt rock and recycled slag.

The unique composition of rock wool produces high-performance insulation materials with the following characteristics:

Made of natural, sustainable materials

Usually contains up to 75% recycled content

Can well retain heat and retain air, thereby slowing down the transfer of heat

Non-combustible, fire-resistant to about 1400 degrees

Highly waterproof treatment

Good sound insulation

Higher insulation value than glass fiber

Long-term performance rock wool will not degrade over time

Allow moisture to escape(prevent mold and mildew)

Where to use rock wool insulation

Rock wool insulation material can be installed wherever you want to install fiberglass or any other type of insulation material, including walls, floors, ceilings, attics, and crawl spaces. However, it is particularly suitable for rooms on the cold north side of the house and indoor rooms that require soundproofings, such as media rooms or music studios.

Because of its high fire resistance, rock wool is ideal—and usually required by regulations—as a firestop between floors of a house. (In the process of reconstruction or new construction, please ask the local building inspector to determine that a certain area needs rock wool fire prevention.)

Rock wool is also very easy to work with: the firm batts can be cut with a serrated knife or a handsaw so that it fits snugly. If it gets wet, the water beads up and rolls off without penetrating the fiber. The rock wool fibers are tightly combined, and the insulation material will not shift or slip off, which will greatly reduce its insulation value.

3 reasons to use rock wool

Rock wool is fireproof.

Rock wool is waterproof!

Rock wool is sound insulation.

We have a rock wool sandwich panel machine. If you are interested in our products, please feel free to contact us.

Automatic Rockwool Production Line