If you're looking for a way to attach acoustic foam to your walls without using pressure-sensitive adhesive, an adhesive spray is a great option. To use this method, start by spraying the back of the acoustic foam and the area of the wall where you will place it. Allow the spray to harden for around 10 seconds, then press the foam panel onto the wall for 30 seconds. Once you have attached the acoustic foam to the wall, it's important to make sure it is properly dried. The best way to do this is to use a fan or air conditioner.
This will help to circulate air around the foam and ensure that it is completely dry. You should also avoid using any heat sources, such as a hairdryer or heat gun, as this could damage the foam. Another way to dry acoustic foam is to use a vacuum cleaner. This method works best if you have a vacuum cleaner with an adjustable suction power. Start by setting the suction power to low and slowly increase it until you can feel air being pulled through the foam.
This will help to remove any moisture from the foam and ensure that it is completely dry. Finally, you can also use a dehumidifier to dry acoustic foam. This method works best in areas with high humidity levels, as it will help to reduce moisture in the air and make sure that your foam is completely dry. Make sure to place the dehumidifier close enough to the foam so that it can effectively remove moisture from the air.