Noise from kitchen appliances, loud music or children playing can be a nuisance in the home. Interior walls that have no sound insulation allow noise to travel through the house and can make your life stressful. You can reduce the amount of noise travelling through your house even if existing walls have no sound insulation. Materials are available to purchase that can either be applied directly to the wall surface or, if you have good do-it-yourself skills, can be used to fill the air gap between stud walls.
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Add an extra drywall panel to the wall to increase overall thickness and improve its sound absorption qualities. Apply caulking to the wall and then screw the new drywall sections to the existing wall studs. This thicker "drywall sandwich" makes it harder for sound to penetrate.
Remove one side of the wall's drywall panels and fill the gap between the walls with mineral wool. The mineral wool should be tightly packed with no spaces around the wall studs. Re-fit the drywall panels to the wall studs.
Fill the wall void with soundproofing foam using a specialist spray kit. These kits are used to spray a special coating between the drywall. Cut a hole into the drywall and insert the feeder tube then inject foam between the drywall. The foam expands to fill the void and provides sound insulation.
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