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Fabric Special
Take Advantage of Our Outdoor Canvas Special
Due to a bulk purchase of UV Resistant...
Thermal Resistance of Expanded Polystyrene ('R' Values)
|
Required ' R' Values |
||||||
|
Thickness |
L Grade |
SL Grade |
S Grade |
M Grade |
H Grade |
VH Grade |
|
10mm |
0.20 |
0.23 |
0.23 |
0.24 |
0.25 |
0.26 |
|
13mm |
0.26 |
0.29 |
0.30 |
0.31 |
0.33 |
0.33 |
|
20mm |
0.40 |
0.45 |
0.47 |
0.48 |
0.50 |
0.51 |
|
25mm |
0.50 |
0.57 |
0.59 |
0.60 |
0.63 |
0.64 |
|
30mm |
0.60 |
0.68 |
0.70 |
0.72 |
0.75 |
0.77 |
|
40mm |
0.80 |
0.90 |
0.94 |
0.96 |
1.00 |
1.02 |
|
50mm |
1.00 |
1.13 |
1.17 |
1.20 |
1.25 |
1.28 |
|
60mm |
1.20 |
1.36 |
1.40 |
1.44 |
1.50 |
1.54 |
|
70mm |
1.40 |
1.58 |
1.64 |
1.68 |
1.75 |
1.79 |
|
75mm |
1.50 |
1.70 |
1.76 |
1.80 |
1.88 |
1.92 |
|
80mm |
1.60 |
1.81 |
1.87 |
1.92 |
2.00 |
2.05 |
|
90mm |
1.80 |
2.03 |
2.11 |
2.16 |
2.25 |
2.30 |
|
100mm |
2.00 |
2.26 |
2.34 |
2.40 |
2.50 |
2.56 |
|
Required Thickness in mm |
||||||
|
R Value |
L Grade |
SL Grade |
S Grade |
M Grade |
H Grade |
VH Grade |
|
1.0 |
50 |
45 |
45 |
45 |
40 |
40 |
|
1.5 |
75 |
70 |
65 |
65 |
60 |
60 |
|
2.0 |
100 |
90 |
85 |
85 |
80 |
80 |
|
2.5 |
125 |
115 |
110 |
110 |
100 |
100 |
|
3.0 |
150 |
140 |
130 |
130 |
120 |
120 |
| 30mm Thickness | 50mm thick | 75mm thick | 100mm thick |
| 1.00 | 1.66 | 2.5 | 3.33 |
Note : This is K value at 24 degrees celcius.
To increase R value we can laminate an albar foil sheet to the polystyrene. Each layer will increase R value by .20. Lamination is available on top and bottom of the sheet only