Roth panel – Cost $3.40 a square foot. This is a board of polystyrene with an aluminum top.

How thick is Warmboard?

Warmboard Panels Warmboard-S is a structural radiant panel that is 1 1/8″ thick, made of Douglas Fir 7 ply plywood, and is sold in full-faced tongue and groove 4′ x 8′ sheets.

How do you heat a radiant floor?

There are two types of radiant floor heating, electric and water-based systems. Both provide heating in a room from the floor up for consistent, efficient warmth. Warm water systems run hot water through pipes to create heat, whereas electric underfloor heating heats wiring beneath the floor to generate heat.