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12" Inch Joist Spacing

Designed to be installed between the joist bays under an existing floor, UnderFloor mats can be used to add heat to a floor that has already been installed. UnderFloor mats are manufactured for joists that are either 12” or 16” on center. They are very DIY friendly. Simply staple the mats up into the joist bay and add insulation under them. These mats are available in both 120v (the most commonly used voltage) and 240v (used for very large areas).

We noticed you put items with 2 different voltages in your cart.
You probably already knew that; this is a friendly reminder…
Voltage rating of floor heating system MUST ALWAYS MATCH power supply voltage of circuit,
even if a Dual 120/240 Voltage Thermostat is selected. Please double check before ordering.

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