Typical R-Values of Flooring Materials
|
Material
|
Typical R-Value
|
R-Value Per Inch
|
Typical Thickness
|
|
Plywood
|
0.825
|
1.10
|
0.750
|
|
Plywood Underlayment 1/4
|
0.275
|
1.10
|
0.250
|
|
Softwood
|
0.825
|
1.10
|
0.750
|
|
Sheet Vinyl
|
0.200
|
1.60
|
0.125
|
|
Vinyl Composition Tile (VCT)
|
0.200
|
1.60
|
0.125
|
|
Linoleum
|
0.400
|
1.60
|
0.250
|
|
Dense Rubber Flooring
|
0.250
|
1.30
|
0.325
|
|
Recycled Rubber Flooring
|
1.100
|
2.20
|
0.500
|
|
Cork
|
1.125
|
3.00
|
0.375
|
|
Cork/MDF/Laminate
|
1.175
|
2.35
|
0.500
|
|
Brick
|
3.375
|
2.25
|
1.500
|
|
Marble
|
0.400
|
0.80
|
0.500
|
|
Ceramic Tile
|
0.250
|
1.00
|
0.250
|
|
Thinset Mortar
|
0.050
|
0.40
|
0.125
|
|
MDF/Plastc Laminate
|
0.500
|
1.00
|
0.500
|
|
Laminate Floor Pad
|
0.300
|
1.92
|
0.160
|
|
Engineered Wood
|
0.250 to 0.750
|
1.00
|
0.250 to 0.750
|
|
Engineered Wood Flooring Pad
|
0.200
|
1.60
|
0.125
|
|
Engineered Bamboo
|
0.720
|
0.96
|
0.750
|
|
Oak
|
0.638
|
0.85
|
0.750
|
|
Ash
|
0.750
|
1.00
|
0.750
|
|
Maple
|
0.750
|
1.00
|
0.750
|
|
Pine
|
0.975
|
1.30
|
0.750
|
|
Fir
|
0.900
|
1.20
|
0.750
|
|
Carpet Pad/Slab Rubber 33lb
|
0.320 to 0.640
|
1.28
|
0.250 to 0.500
|
|
Carpet Pad/ Waffle Rubber 25 lb
|
0.620 to 1.240
|
2.48
|
0.250 to 0.500
|
|
Hair Jute
|
1.250 to 1.940
|
3.88
|
0.325 to 0.500
|
|
Prime Urethane
|
1.400 to 2.150
|
4.30
|
0.325 to 0.500
|
|
Bonded Urethane
|
1.400 to 2.100
|
4.30
|
0.325 to 0.500
|
|
Carpet
|
0.700 to 1.050
|
2.80
|
0.250 to .750
|
|
Wool Carpet
|
1.575 to 2.100
|
4.20
|
0.375 to 0.5
|
|
