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Soundproofing tip: ceiling to wall seam intersection

Ceiling to Wall Seam Intersection

Above is a ceiling to wall assembly illustrating how a ceiling and the wall’s drywall layers should intersect to provide a good seal. Note that we want solid drywall to drywall contact.

Don’t try and leave a gap. The illustration shows a gap that is 1/32 of an inch. Most drywall installers do not hang drywall to this tolerance, but the point is you are not trying to leave a gap on purpose. After drywall is hung, seal the seam tight with acoustical sealant.


Applying acoustical sealant reduces the risk of seal failure, as the remaining gap is small and easy to maintain over time. We are also maintaining mass in the gap area but sealing it tight like a fish tank. Nice and tight, be have now removed the possibility of a sound leak.

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The Soundproofing Company wants to make sure your job is done right the first time; that's why it's so important that we talk before you purchase anything. These consultations are part of our service and are offered at no cost to you.

We have the lab reports, materials, diagrams, SIMS (Soundproofing Installation Manuals) and experience and you need.


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