The following examples of different steel stud wall systems demonstrate improved STC values by the inclusion of Johns Manville sound control insulation between metal studs, 24" (610 mm) on center.

A properly sealed wall assembly with one 5/8 gypsum panel on each side and a 1-1/2 thick sound attenuation blanket installed in the air cavity achieves an STC of 53.

Below are the STC ratings of various wall assemblies, each presented to help illustrate concepts, improvements and rules of thumb. The estimated ratings are based on laboratory test results from …

Find and download resources for STC rated wall assemblies for your construction project. Revit, CAD, and construction details for fire rated wall assemblies can be downloaded for planning and material …

This Acoustics Wall Assemblies Catalog provides a comprehensive list of wall assemblies tested for their acoustic performance. This includes both STC and OITC ratings for steel and wood stud walls, …

Below please find STC rated wall assemblies based on our acoustic lab tests and INSUL models. Lab tests are performed at NVLAP-certified laboratories in accordance with ASTM E90 and ASTM E492.

After entering your selections, the calculator will provide you with an estimated STC rating for your wall assembly, helping you understand how well your wall design will attenuate sound.

STC 3-HOUR SHAFT WALL ASSEMBLIES - METAL FRAME d, C-T or C-H me ... *3” mineral wood insulation is used in lieu of fiberglass insulation.

Jul 19, 2025 · Calculate STC ratings for wall assemblies. Professional tool for estimating sound transmission performance with code compliance checking.

May 19, 2023 · The size and spacing of the studs, the type, thickness and amount of gypsum board or the thickness of the insulation can all be changed to affect the wall assembly’s STC rating.