insulation of light plasterboard wall 5-10 decibels, However, in actual projects, the installer often can not accurately install the plate on the flexible horizontal effect of the wall being very limited. Therefore, in recent years, the United States has gradually abandoned such wall noise technology and means. 4, the thickness and weight of the noise insulation board There are some common noise insulation board on the market, in order to improve the noise insulation effect, are to increase the thickness and weight of the wallboard to achieve, although this method can improve the sound insulation effect to a certain extent, but with A lot of shortcomings: A, noise efficiency (that is, the amount of sound insulation increase) is low, because according to the laws of physics, sheet metal surface density doubled, the sound volume can only theoretically increase up to 6 dB; wall panel density increased four times, The maximum amount of noise can only increase 12 dB. B, the thicker the wallboard, the more space it occupies, and the more valuable space people will lose. C, the heavier the wall, the more difficult the installation; and the wall is too heavy, but also need to consider the floor can
my patio gazebo alternative floorcustom interior door panelsoutside dampproof flooring suppliers
