Hearth for Narvi 20 with low firebox

  • Active since 1995, Hearth.com is THE place on the internet for free information and advice about wood stoves, pellet stoves and other energy saving equipment.

    We strive to provide opinions, articles, discussions and history related to Hearth Products and in a more general sense, energy issues.

    We promote the EFFICIENT, RESPONSIBLE, CLEAN and SAFE use of all fuels, whether renewable or fossil.
  • Super Cedar firestarters 30% discount Use code Hearth2024 Click here

Mickfromaus

New Member
Dec 5, 2023
2
Australia
I’ve just built a solid timber floored sauna and have purchased a free standing Narvi 20 wood burning heater for it. The firebox is only a mere 25mm (1”) off the floor (no inbuilt stand that raises the firebox). Struggling to find any info on thickness and materials for building the hearth. My presumption is given the lack of distance between firebox and timber floor, it’ll need to be quite thick.

Looking for suggestions.

[Hearth.com] Hearth for Narvi 20 with low firebox
 
The floor needs protection but unfortunately the manual does not provide a specification. They seem to be suggesting to get a Narvi base. Would cement blocks be too rough?

FLOOR MADE OF COMBUSTIBLE MATERIAL OR A TILED FLOOR, UNDERFLOOR HEATING
As the heater has a double bottom, thermal radiation reaching the floor is less than normal in case of wooden heaters. During tests the temperature under the heater is less than 75 °C. But still when the heater is installed without a special Narvi installation base, the heat resistance of materials used in the floor structure has to be verified. If needed a Kota installation base has to be used to protect the floor.