Sound Rating Guides

Sound Rating Guide SF

Steel Frame Drywall Partition

Code	Framing	Facing	Sound Transmission Coefficient
SF 5	1 5/8" studs at 16" o.c.	5/8" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	46
SF 10	1 5/8" studs at 24" o.c.	2 layers 1/2" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	55
SF 15	2 1/2" studs at 24" o.c.	1/2" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	47
SF 20	2 1/2" studs at 24" o.c.	5/8" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	51
SF 25	2 1/2" studs at 24" o.c.	2 layers 1/2" drywall one side, 1 layer 1/2" drywall other side and 1.5" Monoglass Spray-On between studs, one side.	52
SF 30	2 1/2" studs at 24" o.c.	2 layers 5/8" drywall one side, 1 layer 5/8" drywall other side and 1.5" Monoglass Spray-On between studs, one side.	54
SF 35	2 1/2" studs at 24" o.c.	2 layers 5/8" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	57
SF 40	3 5/8" studs at 24" o.c.	1/2" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	48
SF 45	3 5/8" studs at 24" o.c.	5/8" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	50
SF 50	3 5/8" studs at 24" o.c.	2 layers 1/2" drywall one side, 1 layer 1/2" drywall other side and 1.5" Monoglass Spray-On between studs, one side.	53
SF 55	3 5/8" studs at 24" o.c.	2 layers 5/8" drywall one side, 1 layer 5/8" drywall other side and 1.5" Monoglass Spray-On between studs, one side.	54
SF 60	3 5/8" studs at 24" o.c.	2 layers 1/2" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	55
SF 65	3 5/8" studs at 24" o.c.	2 layers 5/8" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	56

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Sound Rating Guide SJ

Steel Joist Ceiling

Code	Joist & Floor	Facing	Sound Transmission Coefficient
SJ 5	12" steel joists 6 lb./ft. at 24" o.c. 2" - 3000 PSI concrete floor	5/8" drywall on drywall furing channel at 24" o.c. and 1" Monoglass Spray-On to concrete slab ceiling.	49
SJ 10	12" steel joists 6 lb./ft. at 24" o.c. 2" - 3100 PSI concrete floor	1/2" drywall on drywall furing channel at 24" o.c. and 1" Monoglass Spray-On to concrete slab ceiling.	48
SJ 15	10" steel joists 4.8 lb./ft. at 24" o.c. 2 1/2" - 4000 PSI concrete floor	1/2" drywall on drywall furing channel at 24" o.c. and 1" Monoglass Spray-On to concrete slab ceiling.	50
SJ 20	12" steel joists 6 lb./ft. at 24" o.c. 2" - 3500 psi concrete floor	2 layers 5/8" drywall on nailing channel at 24" o.c. and 1" Monoglass Spray-On to concrete slab ceiling.	50
SJ 25	Hambro steel joists 10" deep 5.5 lb./ft. min. 2.5" or 3.5" - 3500 PSI concrete floor, air duct, firestop flap, electrical outlets.	51/2" drywall on drywall furing channel at 24" o.c. and 1" Monoglass Spray-On to concrete slab ceiling.	55

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Monoglass Sound Rating Guide STC charts

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Sound Rating Guide WF

Wood Frame Drywall Partition

Code	Framing	Facing	Sound Transmission Coefficient
WF 5	2 rows 2 x 3 studs 1" apart at 16" o.c.	5/8" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	49
WF 10	2 x 4 studs at 16" o.c.	2 layers 1/2" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	45
WF 15	2 x 4 studs at 16" o.c.	2 layers 5/8" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	48
WF 20	Staggered 2 x 4 studs at 8" o.c. on 2" x 6" plate	5/8" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	51
WF 25	Staggered 2 x 4 studs at 8" o.c. on 2" x 6" plate	2 layers 1/2" drywall both sides and 1.5" Monoglass Spray-On between studs, one side.	54
WF 30	Staggered 2 x 4 studs at 8" o.c. on 2" x 6" plate	2 layers 5/8" drywall both sides and 1.5" Monoglass Spray-On between studs, one side	56
WF 35	2 rows 2 x 4 studs 1" apart at 16" o.c.	5/8" drywall both sides and 1.5" Monoglass Spray-On between studs, one side	52

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Sound Rating Guide WJ

Wood Joist Ceiling

Code	Ceiling Joist	Facing	Sound Transmission Coefficient
WJ 5	2 X 8 joists at 16" o.c.	1/2" drywall and 1.5" Monoglass Spray-On between joists and drywall resilient channel.	45
WJ 10	2 X 8 joists at 16" o.c.	5/8" drywall and 1.5" Monoglass Spray-On between joists and drywall resilient channel.	46
WJ 15	2 X 8 joists at 16" o.c.	2 layers 1/2" drywall and 1.5" Monoglass Spray-On between joists and drywall resilient channel.	50
WJ 20	2 X 10 joists at 16" o.c.	1/2" drywall and 1.5" Monoglass Spray-On between joists and drywall resilient channel.	47
WJ 25	2 X 10 joists at 16" o.c.	5/8" drywall and 1.5" Monoglass Spray-On between joists and drywall resilient channel.	48
WJ 30	2 X 10 joists at 16" o.c.	2 layers 1/2" drywall and 1.5" Monoglass Spray-On between joists and drywall resilient channel.	53
WJ 35	2 X 10 joists at 16" o.c.	2 layers 5/8" drywall and 1.5" Monoglass Spray-On between joists and drywall resilient channel.	54

View the complete Sound Rating Guide in PDF format here:

Monoglass Sound Rating Guide STC charts