FIRM-FILL® Gypsum Concrete is a cementitious floor underlayment designed for use in multi-family housing to satisfy acoustical ratings and fire codes, making it the perfect choice for this renovation project. K-Wall pours a large volume of Firm-Fill each year, mostly on commercial projects, due to its exceptional fire ratings and effectiveness in isolating sound between floors.

GYP-SPAN® Radiant is a gypsum concrete floor product specifically designed for use with radiant heating systems. It is ideal over radiant heating tubes for uniform heat transfer, and forms a superior crack-free thermal mass. It encases the tubes or cables without air bubbles, creating a superior thermal mass that provides uniform heat transfer. GYP-SPAN® Radiant floor underlayment is the energy efficient and cost effective way to create a smooth, flat, evenly heated floor surface for the attachment of virtually any finished floor covering.

Radiant heating systems supply heat directly to the floor. Radiant heating is the effect you feel when you can feel the warmth of a hot stovetop element from across the room. Radiant heat transfer delivers heat directly to the people and objects in the room, not just by warming the air in a room like a heat pump. Liquid-based radiant floor systems use little electricity, a benefit for homes off the power grid or in areas with high electricity prices.

Radiant floor heating has numerous advantages: it is more efficient than most electrical systems like baseboard heating and usually cost less to run than forced-air heating because no energy is lost through ducts. Because radiant systems do not use forced air, they can also be advantageous to people with severe allergies. The hydronic systems offer flexibility in that they can be heated with a wide variety of energy sources, including standard gas- or oil-fired boilers, wood-fired boilers, solar water heaters, or some combination of these heat sources.