1. Seriously observe the decorative layer
From the appearance, the quality is more clear, the entire sheet layout is clear and clear, and the service life is longer, and it will not fall off automatically during use. If it is inferior, the price attracts you, the sound insulation effect is poor, and the lines are messy. Or different sizes.
2. Reasonable judgment of thermal insulation materials
The good or bad insulation material, the first is to check whether the surface appearance is flat, observe whether the bubble holes are uniform. The surface is flat, the skin is intact, and the bubble hole size is uniform. When the heat is kept, the water and moisture are not easy to pass through the material. The effect of thermal insulation seal is good, but it is not good anyway. Secondly, the density and flame retardant performance are tested. Conditionally, the density can be remeasured with a Libra to see if it is within the specified range. The flame retardant performance inspection is the most accurate. If there are no conditions, you can test it to see whether the material is burned in the open fire, whether there is a pungent odor, etc., to judge the flame retardant performance. If the fire is self-extinguishing, it can also be considered a non-flame retardant material.
Be careful when buying a composite wall insulation board. Whether you can buy a good quality product depends on whether you can carefully identify the various materials according to the above.