Radiant Floor Output Calculator
Scroll to align scales in the windows
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| Add all layers = Total R-Value of floor |
| FLOOR COVERING TABLE |
|
FLOOR EQUIVALENT R-VALUE |
| Floor Covering |
Depth |
R-Value |
|
Floor |
Tube |
Tube Spacing |
| Type |
Depth |
12" |
9" |
6" |
4" |
| carpeting (synthetic) |
1/8" |
0.6 |
| carpeting (synthetic) |
1/4" |
1.0 |
| carpeting (synthetic) |
1/2" |
1.4 |
| carpeting (synthetic) |
3/4" |
1.8 |
| carpeting (synthetic) |
1" |
2.2 |
| carpeting (wool) |
|
x1.5 |
| rubber Pad |
1/4" |
0.3 |
| rubber Pad |
1/2" |
0.6 |
| urethane Pad |
1/4" |
1.0 |
| urethane Pad |
1/2" |
2.0 |
| vinyl or tile |
|
0.2 |
| hardwood |
3/8" |
0.5 |
| hardwood |
5/8" |
0.8 |
| hardwood |
3/4" |
1.0 |
| softwood |
1/2" |
0.6 |
| softwood |
3/4" |
0.8 |
| softwood |
1" |
1.2 |
|
|
| concrete floor |
2" |
.4 |
.3 |
.2 |
.2 |
| concrete floor |
4" |
.5 |
.4 |
.3 |
.3 |
| concrete floor |
6" |
.6 |
.5 |
.4 |
.4 |
| gypsum floor |
1" |
1.6 |
1.3 |
.9 |
.7 |
| gypsum floor |
2" |
1.7 |
1.4 |
1.0 |
.9 |
| gypsum floor |
3" |
1.8 |
1.5 |
1.3 |
1.1 |
staple-up
with aluminum plates
|
3.0 |
2.5 |
2.0 |
1.7 |
staple-up
without aluminum plates |
3.5 |
2.9 |
2.3 |
1.8 |
|
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