Thermal Mass At Basement Floor

Concrete slab floors should be 100 200mm thick for the best performance while thermal mass walls should be 100 150mm thick.

Thermal mass at basement floor.

Concrete foundation walls in finished rooms areas shall be furred out and insulated with a minimum of r 8 insulation extending down to the basement floor slab on basement walls less than 50 above grade and a minimum of r 13 insulation on basement walls that are more than 50 above grade. Even an inch or two in elevation for your subfloor will make a noticeable difference. Thermal mass and floors. Provide the recommended level of insulation under floors above unheated spaces around walls in a heated basement or unventilated crawl space and on the edges of slabs on grade.

The way thermal mass relates to floors is important because most times the floor won t be exposed to the most direct source of thermal energy the sun. 2 insulation priorities it is most important to. Dark slates are good solar absorbers though they are not massive enough to store much heat. A 1980 s study by industry researchers concluded that any floor covering whose thermal conductance exceeded about 10 btu hr ft 2 would not impair the thermal storage capability of the concrete slab.

I ve also looked at superseal s subfloor and may go with that in case no one knows of a thermaldry knock off. Full 8 foot tall basement ceilings in older homes are rare with 7 footers more the norm. If the latter then it can still serve as a thermal mass floor if it s not too shiny. Thermaldry basement floor tiles dry basement floor i love the product but refuse to pay 8 sq foot and the company doesn t sell the tiles to diyers.

Most of the thermal energy will come from internal heating. If it is highly reflective then it will deflect solar energy to the walls. Yes you can build a 12 inch high basement subfloor and stay dry above everything but basement ceilings tend to be low. Darker colors are ideal for absorbing heat but within the confines of a home the heat collection advantage of darker floors is not that pronounced.

Yes i ve looked at dricore but i don t want to put osb on my basement floor. Even if you put a floor covering on a concrete slab floor you will still get the temperature balancing effects of thermal mass as long as it is insulated below and therefore kept inside your building envelope. Very thick thermal mass walls and floors may take too long to heat while those that are too thin won t store enough heat. Is the basement floor hardwood over a wooden frame or hardwood over concrete.

Insulate your attic to the recommended level including the attic door or hatch cover. This eliminates using even the thinnest floor carpeting whose conductance c is about 0 8 btu hr ft 2 and some vinyl floor coverings.