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I have a really small soffit that I built for my kitchen to hide some HVAC. Is it ok to attach drywall directly to the 2x4 framed soffit or do I have to cover it in plywood or OSB first?

  • why would it not be okay to do it on a soffit when it's how it's always done on regular framing? what makes the soffit any different? – amphibient Jun 9 '14 at 22:02
  • I don't know. I just see a lot of soffit how-to guides and many of them mention covering the soffit with plywood or osb. – Shane Wealti Jun 9 '14 at 23:02
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There is no problem attaching drywall directly to the framing. Drywall is more heat resistant than wood and the temperatures in conventional HVAC are not extreme enough to be an issue.

The only other consideration is whether you want insulation around the ductwork to improve the efficiency of the system. If you do, either fiberglass batts or foam panels could be inserted between the 2x4s before you install the drywall.

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