Mendota D30 - Page 25

85-03-01071 D30 DEEP TIMBER Page 25
Suitable Backer Materials R-Ratings
R-Values of common Backer Materials
Material
Thickness
R-Value
Mineral Fiber Board ( Micore 160)
1/2"
1.270
Mineral Fiber Board (Micore 300)
1/2"
1.030
Mineral Fiber Board (Micor SB)
1/2"
1.470
Cearmic Board (Rescor 360)
1/2"
1.110
Cearmic Board (Fiberfrax Duraboard LD)
1/2"
1.100
Skamolex (475, 600, 700, VIP-12, HD)
1”
0.410
Promat Promafour
1”
0.410
Gypsum or Plaster Board
1/2"
0.450
Cement Board (Hardibacker 500)
1/2"
0.200
Cement Board (Hardibacker)
1/4"
0.130
Common Brick
2-1/4"
0.450
Common Brick
4"
0.800
Suitable Finishing Materials R-Ratings
R-Values of Common Facing Materials
Material
Thickness
R-Value
Cement Mortar
1/2"
0.100
Concrete
1"
0.095
Ceramic Tile
1/4"
0.020
Flagstone
1"
0.079
Granite
1"
0.083
Limestone
1"
0.153
Marble
1"
0.090
Sandstone
1"
0.079
Slate
1"
0.100