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- 2 Jan 2019
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So I have never done plastering and am a complete novice. I'm looking at soundproofing a party wall. Building a stud wall an inch from the party wall to create a cavity. During my research I found soundcoat plaster which is suppose to make the wall airtight. Now can i apply this straight on top of the existing plaster? Their is a few crack in the existing. Nothing major. But with this plaster being described as air tight I'm assuming it will help block out sound. Anyone had any experience with this? The wall is solid brick as well. The house was built late 30s early 40s