Sound-Pruf™ Sound Transmission Class (STC) Assemblies

American Fireproofing, Inc.
Office: 219-794-1495
Fax: 219-756-0636
Email: allen@americanfireproofing.com

Test #

Description

STC

RAL-TL87-106	Single wood studs 24" o.c., single layer 1/2" type X gypsum board each side, 1 1/2" Sound-Pruf™ in stud cavities.	45

RAL-TL87-107	Single wood studs 24" o.c., Single layer 1/2" type X gypsum board on one side, single layer 5/8" type X gypsum board on opposite side, stud cavities filled with Sound-Pruf™.	48

RAL-TL87-108	Single Steel studs 16" o.c., Single layer 1/2" type X gypsum board on one side, single layer 5/8" type X gypsum board on opposite side, stud cavities filled with Sound-Pruf™.	47

RAL-TL87-109	Single wood studs 16" o.c., Single layer 1/2" type X gypsum board on one side, single layer 5/8" gypsum board on opposite side, stud cavities filled with Sound-Pruf™.	48

RAL-TL87-110	Single steel studs 16" o.c., Single layer 1/2" type X gypsum board on one side, single layer 5/8" type X gypsum board on opposite side, 11/2" Sound-Pruf™ in stud cavities	38

RAL-TL87-111	Single wood studs 16" o.c., Single layer 5/8" type X gypsum board each side, stud cavities filled with Sound-Pruf™.	42

RAL-TL87-112	Single steel studs 16" o.c. Single layer 1/2" type X gypsum board each side 11/2" Sound-Pruf™ in stud cavities.	43

RAL-TL87-113	Single steel studs 16" o.c., Single layer 1/2" type X gypsum board on one side, double layer 1/2" type X gypsum board on opposite side, 11/2" Sound-Pruf™ in stud cavities.	45

RAL-TL87-114	Single wood studs 16" o.c., Single layer 5/8" type X gypsum board on one side, double layer 1/2" type X gypsum board on opposite side, stud cavities filled with Sound-Pruf™.	47

RAL-TL87-115	Floor Panel, single 2" x 10" floor joists 16" o.c., 1/2" waferboard sub-floor, 1/2" particle board main floor, carpet, pad, single layer 5/8" type X gypsum board mounted on resilient channels, 2" Sound-Pruf™ sprayed in joist cavities.	54

RAL-TL87-116	Floor Panel, single 2" x 10" floor joists 16" o.c., 1/2" waferboard sub-floor, 1/2" particle board main floor, carpet, pad, single layer 5/8" type X gypsum board mounted on resilient channels, 1" Sound-Pruf™ sprayed in joist cavities.	45

RAL-TL87-117	Double wall, single layer 1/2" type X gypsum board on each side of single wood studs 24" o.c., 11/2" Sound-Pruf in stud cavities, 1" air gap, single wood studs 24" o.c., Single layer 1/2" type X gypsum board on one side, single layer 5/8" type X gypsum board on opposite side, stud cavities filled with Sound-Pruf™.	61

RAL-TL87-118	Single wood studs 24" o.c., Single layer 1/2" type X gypsum board on one side, single layer 5/8" type X gypsum board on opposite side, stud cavities filled with Sound-Pruf™.	54

RAL-TL87-119	Single wood studs 24" o.c., Single layer 1/2" type X gypsum board on resilient channels on one side, single layer 1/2" type X gypsum board on opposite side, 11/2" Sound-Pruf™ in stud cavities.	52

RAL-TL87-120	Single steel studs 16" o.c., Single layer 5/8" type X gypsum board on one side, single layer 1/2" type X gypsum board mounted on resilient channels on opposite side, stud cavities filled with Sound-Pruf™.	53

Riverbank Acoustical Laboratories - STC results on 1/4" steel panels
	Thickness	Density	STC
RAL-TL96-101	4"	6 / 12 / 6	53
RAL-TL96-102	3"	12 / 6	45
RAL-TL96-103	3"	6 / 12	52
RAL-TL96-104	0"	N/A	39
As requested by the client, transmission loss values were calculated at additional test frequencies. Although the measurements were made in accordance with the procedures described in ASTM E90-90, they do not qualify as part of the standard. Since the results are representative of the test environment only, they are unofficial and intended for research and development guidelines rather than for commercial purposes. The data at the additional frequencies were as follows:
Sound Transmission Loss (dB)
Reference Test Number 1/3 Octave Center Frequency (Hz) 50 63 80 6300 8000 10000 RAL-TL96-101 21 23 26 67 69 68 RAL-TL96-102 27 29 30 64 64 60 RAL-TL96-103 28 26 24 66 65 62 RAL-TL96-104 25 24 24 46 48 49