What's the best underlayment to put under hardwood floors over radiant heat?
I am installing an engineered hardwood floor over a subfloor with radiant heat tubes installed already. The radiant heat tubes have been covered with 1 1/2" of gypcrete. I will be installing this in a floating floor application and would like to find an underlayment which has a low R-value so as to not provide too much resistance to the flow of heat from the floor below. Any suggestions as to brand, thickness or place to find information on this would be very much appreciated.
A thin construction paper is what you are looking for. You can get this at any building supply. Don't use felt paper because it stinks. A floating floor may shrink from heat, check on this before buying
 |
 Resistance Bands 4 FIT CORD Covered Exercise Tube Cable  US $24.95
|
 Resistance Bands L M H FIT CORD Covered Exercise Tubes US $22.95
|
 10 LIGHT FITCORD Resistance Bands COVERED Exercise Tube US $59.95
|
 5 Resistance Bands VL VH FIT CORD COVERED Exercise Tube US $39.95
|
 4 Resistance Bands L VH FIT CORD COVERED Exercise Tube US $33.95
|
 Resistance Bands 5 FIT CORD Covered Exercise Tube VL VH US $39.95
|
 3 Resistance Bands M VH FIT CORD COVERED Exercise Tube US $31.95
|
 3 Resistance Bands L H FIT CORD COVERED Exercise Tube US $22.95
|
 Gaiam Covered Resistance Cord Workout Kit MEDIUM US $11.98
|