Installation Guide

30 SOUND CONTROL
6.625"
1.625"
8.625"
9"
8.625"
Test Results
Test results of assemblies with DITRA-HEAT-DUO and porcelain tile over concrete are listed in the table below. DITRA-HEAT-DUO with
porcelain tile received a rating of ΔIIC 20, a significant contribution to sound rated floor-ceiling designs. To further improve IIC ratings, sound
rated ceilings can be installed below the subfloor. Wood construction sound tests are in progress.
DH-C-TS
Ceramic, porcelain
or stone tile
Schluter SET
®
, Schluter ALL-SET
®
, Schluter
FAST-SET
®
, or unmodified
thin-set mortar
DITRA-HEAT or DITRA-HEAT-DUO
uncoupling membrane and heating cables
Schluter SET
®
, Schluter ALL-SET
®
,
Schluter FAST-SET
®
, or unmodified
thin-set mortar
Concrete
No. Report Test Floor Ceiling Results
Schluter
®
-DITRA-HEAT-DUO
1 NGC 7016078 ASTM E2179 8" Concrete N/A ΔIIC = 20
2 IN17-007 ASTM E492 8" Concrete N/A IIC = 50
3 IN18_001 ASTM E492 8" Concrete 9" wire suspended ceiling with gypsum board IIC = 67
4 IN17_059 ASTM E492 6" Concrete RSIC-1 clips with gypsum board IIC = 60
No. Report Floor-Ceiling Sketch
Schluter
®
-DITRA-HEAT-DUO
1
• 8" concrete slab
• No ceiling
2
3
• 8" concrete slab
• 9" wire-suspended ceiling
with cold rolled steel and 7/8"
furring channel
• R-11 unfaced fiberglass batt
insulation
• 5/8" gypsum board
4
• 6" concrete slab
• RSIC-1 clips with 7/8" furring
channel
• R-11 unfaced fiberglass batt
insulation
• 5/8" gypsum board
*All assemblies featured 12" x 12" porcelain tile over DITRA-HEAT-DUO installed with cement based thin-set mortars and grouts
Tile and underlayment
Floor-ceiling thickness = 8.625"
Floor-ceiling thickness = 17.625"
Floor-ceiling thickness = 8.25"
RSIC-1 Clips
Concrete slab
Steel Wire
Furring
Channel
Concrete slab
Concrete slab
Installation Considerations
In laboratory testing, sound energy transmission is directed through the test specimen only, with negligible transfer through other paths.
The values provide an accurate picture of the sound control characteristics of the test specimen itself. However, floor/ceiling assemblies
may not perform as expected in the field if they are not isolated from adjacent walls to prevent sound energy transfer. Thus, perimeter joints
are not only necessary to accommodate expansion of the tile assembly, but to also prevent “flanking” sound transfer. Schluter
®
-Systems
provides a range of prefabricated movement joint profiles that can be used for these purposes.
Tile and underlayment
Tile and underlayment
Gypsum Board
Gypsum Board