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Suitable Backer Materials R-Ratings
Mineral Fiber Board ( Micore 160)
Mineral Fiber Board (Micore 300)
Mineral Fiber Board (Micor SB)
Cearmic Board (Rescor 360)
Cearmic Board (Fiberfrax Duraboard LD)
Skamolex (475, 600, 700, VIP-12, HD)
Promat Promafour
Gypsum or Plaster Board
Cement Board (Hardibacker 500)
Cement Board (Hardibacker)
Common Brick
Common Brick
Suitable Finishing Materials R-Ratings
85-03-01071
R-Values of common Backer Materials
Material
R-Values of Common Facing Materials
Material
Thickness
Cement Mortar
1/2"
Concrete
1"
Ceramic Tile
1/4"
Flagstone
1"
Granite
1"
Limestone
1"
Marble
1"
Sandstone
1"
Slate
1"
D30 DEEP TIMBER
Thickness
R-Value
1/2"
1.270
1/2"
1.030
1/2"
1.470
1/2"
1.110
1/2"
1.100
1"
0.410
1"
0.410
1/2"
0.450
1/2"
0.200
1/4"
0.130
2-1/4"
0.450
4"
0.800
R-Value
0.100
0.095
0.020
0.079
0.083
0.153
0.090
0.079
0.100
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