Rock wool sandwich panels are sandwich panels made from rock wool. They fully utilize the unique properties of rock wool core material, offering significant benefits in fire resistance, thermal insulation, and sound absorption. They are suitable for roofs and walls of steel structure workshops and simple prefabricated houses, as well as ceilings and partitions in cleanrooms.
So how do we choose high-quality rock wool sandwich panels?
- Tap the surface of the color steel plate of the rock wool sandwich panel with your finger or a hard object. If the sound is dull and the metallic sound is not obvious, be careful, as this rock wool sandwich panel may be of poor quality. A good quality color steel plate will produce a loud and crisp metallic sound.
- If possible, try to visit the sandwich panel manufacturer in person. Check the company’s environment and whether it is legitimate. See if there are test reports from professional testing institutions and whether the test results are qualified. Inquire about the company’s reputation in the market. Choose rock wool sandwich panels produced by qualified and reputable companies that meet relevant national industry standards.
- The surface of the rock wool sandwich panel should be flat and smooth, without wrinkles, cracks, peeling, or other defects.
- Observe the exposed parts of the rock wool sandwich panel. When you get a sandwich panel, first observe the exposed steel material, such as the cross-section, to see if the crystals are fine and dense, and whether it is grayish, dark, or contains impurities. If the cut surface has a fine, dense crystal structure, it indicates superior quality.
- Rock wool sandwich panels consist of a base plate and rock wool. First, we need to consider the density of the base plate and the rock wool. Commonly used color-coated steel base plates are 0.2~0.5mm thick, and the density of rock wool is generally 80~130kg/m³. Based on cost and different requirements, 80kg is more commonly used, but rock wool with a density of 100kg or higher has very strong waterproof and fireproof properties.