ul-stc ratings-matrix v6 160203 - prescientco.com€¦ · stc iic stc iic 57 70 57 55 stc iic ......
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Sound RatingsWall Assembly ‐ UL W428 STC
Prescient 16‐18 ga. metal studs with (2)
layers of 5/8" Type X GWB, 3.5" batt
insulation, 1/2" RC Deluxe 24" OC, and (1)
layer of 5/8" Type X GWB
57
Floor/Ceiling Assembly ‐ UL G592*
STC IIC STC IIC
57 70 57 55
STC IIC STC IIC
61 54 61 54
1" cementitious board on 18" deep
Prescient trusses, 1/2" RC Deluxe 12" OC, (1)
layer 5/8" Type C GWB
*An underlayment is required with all floor finishes in order to reach code minimum IIC levels. Per IBC 1207.2, assemblies separating
dwelling units must have STC and IIC ratings of not less than 50 (45 if field tested). STC & IIC ratings are based on field tests (ASTC & AIIC
standards).
VCT Vinyl Plank
Carpet Hardwood