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Level-Right® Level-Right® Cementitious Underlayments can level any floor challenge. |
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Therma-Floor® Sound Ratings
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| Sound Ratings - Tested Assemblies | Maxxon Underlayments | Insulation | Ceiling Susp. on Chan. | Ceiling Drywall | Floor Covering | Rating | Test Number |
|---|---|---|---|---|---|---|---|
| Wood Joist w/ 5/8" (16 mm) plywood subfloor, 2" x 10" (51 mm - 254 mm) joists |
3/4" (19 mm) 3/4" (19 mm) 1" (25 mm) 3/4" (19 mm) 3/4" (19 mm) 1" (25 mm) 1-3/8" (35 mm) 3/4" (19 mm) 1-3/8" (35 mm) 1-3/8" (35 mm) |
Yes No No Yes No No Yes No Yes Yes |
Yes Yes No Yes Yes No Yes Yes Yes Yes |
1/2" (13 mm) 1/2" (13 mm) 1/2" (13 mm) 5/8" (16 mm) 5/8" (16 mm) 1/2" (13 mm) 1/2" (13 mm) 1/2" (13 mm) 1/2" (13 mm) 1/2" (13 mm) |
None None None Carpet and Pad Carpet and Pad Carpet and Pad Foam-Back Parquet Cushioned Vinyl Vinyl Composition Tile Vinyl |
60-STC 58-STC 50-STC 79-IIC 75-IIC 56-IIC 55-IIC 50-IIC 51-IIC 51-IIC |
TL81-16 TL81-17 TL81-19 5-761-2 5-761-4 IN81-6 IN81-11 IN81-3 IN81-13 IN81-14 |
| Wood Joist w/ 5/8" (16 mm) plywood subfloor, 2" x 10" (51 mm - 254 mm) joists, .4" (10.2 mm) Enkasonic® |
1-1/2" (38 mm) | Yes | Yes | 5/8" (16 mm) | Ceramic Tile | 57-IIC | IN88-2 |
| Wood Joist w/ 3/4" (19 mm) OSB subfloor, 2" x 10" (51 mm - 254 mm) joists |
3/4" (19 mm) | Yes | Yes | 5/8" (16 mm) | Wood Flooring | 53-FIIC | 90-0156.2 |
| TJL® Truss with 5/8" (19 mm) plywood subfloor |
3/4" (19 mm) 3/4" (19 mm) 1" (25 mm) 1" (25 mm) |
No No No No |
Yes Yes No No |
5/8" (16 mm) 5/8" (16 mm) 5/8" (16 mm) 5/8" (16 mm) |
None Cushioned Vinyl None Cushioned Vinyl |
62-FSTC 61-IIC 51-FSTC 52-IIC |
5-905 5-905-2 5-905-1 5-905-3 |
| TJI® Joist with 3/4" (19 mm) T&G OSB subfloor |
3/4" (19 mm) 3/4" (19 mm) 3/4" (19 mm) 3/4" (19 mm) |
Yes Yes Yes Yes |
Yes Yes Yes Yes |
5/8" (16 mm), 2 layers 5/8" (16 mm), 2 layers 5/8" (16 mm), 2 layers 5/8" (16 mm), 2 layers |
None Cushioned Vinyl Cushioned Vinyl Cushioned Vinyl |
59-STC 54-IIC 50-IIC 51-IIC |
TL96-250 IN96-28 IN96-30 IN96-29 |
| Parallel Chord Truss 2" x 4" (51 x 102 mm) 12" deep with 3/4" (19 mm) T&G OSB, .4" (10.2 mm) Enkasonic® |
1-1/2" (38 mm) 1-1/2" (38 mm) |
Yes Yes |
Yes Yes |
5/8" (16 mm) 5/8" (16 mm) |
None Carpet and Pad |
59-FSTC 83-FIIC |
87-729-13 87-729-7 |
| Truss Plate Institute with 3/4" (19 mm) T&G plywood subfloor |
3/4" (19 mm) 3/4" (19 mm) 3/4" (19 mm) |
Yes (blown-in) Yes (blown-in) Yes (blown-in) |
Yes Yes Yes |
5/8" (16 mm) 5/8" (16 mm) 5/8" (16 mm) |
Vinyl Vinyl Ceramic |
57-FSTC 50-FIIC 46-FIIC |
98.67280.10 |
| Precast Concrete | 1/2" (13 mm) 1/2" (13 mm) 1/2" (13 mm) |
No No No |
No No No |
No No No |
None Cushioned Vinyl Direct Glued Carpet |
58-FSTC 66-IIC 75-IIC |
5-896 5-896-1 5-896-2 |
| Metal Joist 9 1/2" (247 mm) w/ 3/4" (19mm) T&G OSB subfloor |
3/4" (19 mm) 3/4" (19 mm) 3/4" (19 mm) |
Yes |
Yes |
5/8" (16 mm) 5/8" (16 mm) 5/8" (16 mm) |
Vinyl Carpet and Pad Carpet and Pad |
49-FIIC 51-FSTC 73-FIIC |
94-2278 94-2168.1 94-2168.2 |
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SpaceJoist® Metal Web Truss |
3/4" (19 mm) |
Yes |
Yes |
5/8" (16 mm) |
Vinyl |
51-FIIC
|
51210-4 |
FSTC - Field Sound Tranmission Class in accordance with ASTM E
336 and E 413.
STC - Sound Transmission Class in accordance with ASTM E 90 and E 413.
IIC - Impact Insulation Class in accordance with ASTM E 492.
FIIC - Field Impact Insulation Class in accordance with ASTM E 1007 and
E 989.
All acoustical testing was done by Riverbank Testing Laboratories; Intest,
Inc.; Twin City Testing Corporation; or D.L. Adams Associates, LTD. For type of floor covering used,
channel spacing and other information, contact Maxxon for test reports by number.
For good acoustical performance, the selection of a floor/ceiling
system attaining a minimum 60 STC and IIC is recommended. Systems attaining
ratings less than 55 STC and IIC provide only marginal acoustical
performance. The Maxxon floor underlayments and Acousti-Mat® are but single
components of an effective sound control system. No sound control
system is better than its weakest component. Care must be taken in the installation
of all components of construction to assure the ultimate
designed acoustical performance.