Slab On Grade Floor Heating

Let say we have a space on grade has 4 exterior walls concrete slab floor a ceiling and we need to use a hydronic heating radiators.

Slab on grade floor heating. Insulating a slab on grade depends on at least four factors. This is not the easiest thing to accomplish with a hand made slab but a company that supplies prefab slab on grade kits legalett can easily. A slab on grade floor that is not a heated slab on grade floor. Hvac ductwork in floor slabs.

Martin holladay explains insulating a slab on grade in the energy smart details department. The climate the type of foundation whether the slab includes hydronic tubing for radiant heat and the severity of the local termite problem. A slab on grade is defined as any concrete slab poured over excavated soil. From a radiant heating perspective it doesn t matter if the slab is actually at grade or is poured several feet below grade as part of a full foundation.

Also minimum tubing is required to gain maximum heating results. In 1973 it has a concrete slab foundation with radiant heat water runs thru copper tubing within slab. Yes you can build a slab on grade with a radiant heated floor and have an attached unheated screen porch on the same slab you just need to be sure to insulate between the heated and unheated portions. It is the only cross linked 7 8 pex tubing on the market and its bending diameter is less than 20 making it easy to thread through floor joists.

Heat losses from heated slabs are greater than that of unheated slabs because the temperature is warmer. We were told the only way to go was a wood engineered floor glued down. Radiant heat is a very comfortable heat so as you choose the more affordable fuel source and the system is properly designed to heat the space and the. Heated floors can be done with electric wires hydronic tubes but there is also one company that installs air heated tubes in slab on grade foundations powered either by electricity or gas.

Heated slabs on grade will feature hot water pipes or coils embedded within or beneath the slab to provide space heating. Walls 30000 btu h floor 10000 btu hr we selected a 90000 btu hr boiler to stand this load. Functional troubles such as lack of air flow or collapsed ductwork and environmental problems such as. 14 years later still in good shape and seems to keep house warm and comfortable.

Hvac air ducts located inside concrete slab floors invite a surprisingly broad range of building problems that fall into two broad categories. Slab on grade installation. We ran a load calculation it say ceiling losses 50000 btu hr.