Doug Mossbrook is president of Eagle Mountain HVAC in Canandaigua, N.Y., specializing in radiant heating applications. He has installed more than 100 successful systems with hardwood flooring.
Q: Before installing a thin concrete or gypcrete floor over a plywood subfloor, what kind of membrane should be installed over the plywood?
Q: When designing a radiant floor, can there be such a thing as too much thermal mass? Here in Alaska, we sometimes see the temperature jump from -10°F up to 40°F above in just a few hours.
Q: How do you go about using sand instead of concrete for thermal mass in a radiant floor, as mentioned in the Sept. ’98 article "Hardwood Flooring Over Radiant Heat"?
Hardwood floors can perform well over radiant heat, but it takes careful hvac design, good job-site moisture control, and careful coordination between the heating sub and the flooring contractor. Here’s what you need to know.