Colour
The good or bad of cork flooring is to see if more cork is used. The cork bark is divided into several levels: the outermost surface is the black skin, which is also the hardest part. The black skin is white or light yellow under the black skin. It is very soft and is the essence of cork. If cork flooring is more of a softwood extract, the quality will be higher. Of course, since the floor is subject to weight and pressure, it is normal to use black skin on the floor back, which improves the impact resistance.
Density
The density of cork flooring is divided into three levels: 400-450 kg/m3; 450-500 kg/m3; and more than 500 kg/m3. Generally, 400-450 kg/m3 is enough for households. If there are heavy objects in the room, you can choose a little higher. In short, you can choose the floor with low density and choose the density as small as possible because it has better elasticity, heat preservation and sound absorption. Vibration absorption.
Surface
When selecting, first look at whether the sanding surface of the floor is smooth, whether there are bulging particles, and whether the cork particles are pure. Whether the length of the side is straight, the method is: take 4 pieces of the same floor, spread on the glass or the flat ground, and assemble it to see if it is seamed. Inspect the bending strength of the board surface by closing the two diagonal lines of the floor and seeing whether the curved surface is cracked or not. Finally, the glue strength test is carried out, and the small piece of cork floor is placed in the boiling water bubble, and it is found that the smooth surface of the sanding becomes uneven, which is a non-conforming product, and the surface of the high quality product should have no obvious change.
