What should be noted when using rock wool boards?

In the market of thermal insulation materials, the energy-saving materials that can meet the requirements in terms of apparent density, service temperature, compressive strength, thermal conductivity, water absorption and other properties and are used for external insulation of buildings mainly include polystyrene foamed plastic board (EPS and XPS), rock wool board, glass wool felt, and ultra light polystyrene particle thermal insulation slurry. The common feature of the above materials is that they all have a large number of closed pores inside the material, and their apparent density is relatively small, which is also essential as insulation materials.

matters needing attention

1. Pay attention to rain protection and do not carry out construction on rainy days.

2. When used for cold insulation, a moisture-proof layer must be added. In special low temperature conditions, non resin rock wool should be used for insulation, and the moisture-proof layer must also be fire-resistant

3. When the temperature exceeds a certain level, such as 200 ℃, appropriate external protection must be added to the insulation, so as not to cause changes in the thickness and bulk density of the rock wool board.

4. Regarding the insulation of large-diameter and flat wall equipment using rock wool products, when the temperature exceeds 200 ℃, it is important to remember the instructions from the rock wool board manufacturer: add insulation nails (with a spacing of about 400mm) and the outer protection should be tightly attached.

5. Equipment, insulation nails, and pipelines that require insulation can be coated appropriately to facilitate corrosion prevention. Also, there should be no leaks. This can achieve better results.

6. For finished rock wool board products that are prone to mechanical wear and tear under outdoor insulation, metal or plastic wrapping should be used. Then, attention should be paid to the joints and the sealing of the joints. If necessary, adhesive sealing strips should be added, and the stacking of wrapping layers should not be less than 100mm locally

When the insulation object is placed at a 90 degree angle and has a certain height, the insulation layer of the rock wool board must have positioning pins or support rings, with a spacing of no more than 3 meters, to prevent the insulation material from sliding down in the presence of vibration.

In order to achieve the goal of minimizing heat loss, the joints between rock wool board and felt must be tightly connected. If there are multiple layers of insulation, the cross joints need to be interwoven to avoid forming a thermal bridge. During cold insulation, the cold bridge must be completely isolated.