1. Can Sound-Insulation Sponges Be Directly Pasted on the Wall?

They can be directly pasted, but attention should be paid to the construction method and base layer treatment. The wall surface must be kept dry, flat and free of loose dust, otherwise the adhesive cannot adhere firmly and the sponge is prone to falling off. It is recommended to use environment-friendly special glue or double-sided adhesive tape for spot pasting or strip pasting, instead of applying glue on the entire surface, so as to avoid difficulty in cleaning when replacing the sponge in the later period. For large-area installation, it is recommended to first install a wooden keel or light steel keel frame, then embed the sponge into the frame, and finally cover it with sound-absorbing fabric or decorative panel, which is both aesthetically pleasing and convenient for later maintenance. When directly pasted with the sponge surface exposed, it is easy to accumulate dust and difficult to clean.

2. What Should I Do If the Sound-Insulation Sponge Falls Off After Installation?

Falling off is usually caused by the following reasons: unclean wall base layer treatment, unqualified adhesive quality, excessive environmental humidity leading to adhesive failure, and excessive self-weight of the sponge exceeding the bearing capacity of the adhesive. There are different solutions for different causes: if the problem lies in the adhesive, replace it with a special adhesive with higher viscosity; if the humidity is too high, solve the wall moisture-proof problem first before reinstallation; if the self-weight is excessive, it is recommended to add more fixing points or switch to the frame installation method. Before re-pasting, the residual old adhesive on the wall and sponge surface needs to be completely cleaned, to ensure the pasting surfaces are dry and free of oil stains.

3. Can Sound-Insulation Sponges Be Installed Outdoors?

Ordinary sound-insulation sponges are not suitable for outdoor use. Ultraviolet rays, rainwater and temperature fluctuations in the outdoor environment will accelerate the aging of the sponge, causing it to harden, break rapidly and lose sound absorption performance. If sound absorption treatment is required outdoors, dedicated exterior wall sound-absorbing materials such as rock wool boards and glass wool boards should be selected. These materials have undergone waterproof and anti-ultraviolet treatment, and can adapt to harsh outdoor environments. Alternatively, the sound-insulation sponge can be installed in sheltered outdoor spaces, such as under a canopy or inside a ventilation duct, where direct contact with rainwater and sunlight can be avoided.

4. What Should I Do If There Is an Odor in the Room After Installing the Sound-Insulation Sponge?

It is normal for newly installed sound-insulation sponges to have a slight odor, which is released by the residual volatile organic compounds during the sponge production process. Under normal circumstances, the odor will dissipate naturally after 3-7 days of continuous ventilation in the room. If the odor is pungent or does not fade for a long time, there may be quality issues with the sponge, which uses inferior raw materials or has excessive additives. In this case, it is recommended to stop using it and contact the supplier for handling. When purchasing, try to choose products with environmental test reports to ensure that the VOC emission meets the indoor usage standards.