Close-up of dark gray acoustic foam panels with pyramid-shaped protrusions arranged in a grid pattern.

Class A Walls, Verified for Turnover

Industry:
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Application:
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A construction manager needed newly built Class A demising walls verified to their specified STC 50 to 55 rating before turnover. Memtech field-tested the completed walls with calibrated instrumentation and delivered documented results on an urgent timeline.
Michigan
Corporate conference room with fabric-wrapped acoustic wall panels flanking a wall-mounted display.

Year

2026

Specified Rating

STC 50 to 55

Scope

Demising wall verification

When Tested

Before turnover

Services Provided

Field STC Verification, Construction-Phase Support

A construction manager finishing a Class A commercial office fit-out needed the newly built demising walls verified to their specified rating, STC 50 to 55, before handing the space to the owner. The timeline was urgent.

Memtech Acoustics field-tested the completed walls against the specification with calibrated, NIST-traceable Class 1 instrumentation, following the recognized field standard for airborne sound isolation. We measured each wall as built and reported the achieved rating against the contract requirement.

Testing before turnover meant any shortfall could be corrected while the trades were still mobilized, not chased as a callback against retainage after occupancy. The construction manager received documented results they could hand straight to the owner, closing the acoustic line in the closeout with data, not assurances.

Highlights

  • Class A demising walls tested against the specified STC 50 to 55 target
  • Calibrated, NIST-traceable Class 1 instrumentation, following the recognized field test standard
  • Documented results delivered on an urgent pre-turnover timeline
  • Turnover paperwork the construction manager could hand straight to the owner

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