Hello everyone,
We are planning a basement for our new house, which will be used as a utility basement. The technical room (including the heat pump and mechanical ventilation system, etc.) will be located in the basement. The other rooms are intended for storage, a workshop, and storage areas. Actual living use is not planned; however, I can imagine that our children might later use the space for hobbies (music, party room, foosball, etc.) if the climate there is reasonably comfortable. Also, it should not be freezing cold when working in the workshop during winter.
What about ventilation? I have planned a few basement rooms without light wells and was considering possibly connecting them to the mechanical ventilation system if the humidity gets too high.
Now I wonder, how are utility basements commonly insulated nowadays and what effects does each approach have?
- No exterior insulation at all and only insulating the basement ceiling/stairwell? Is it then acceptable for the heat pump and mechanical ventilation system to be installed in the basement? Can the basement be connected to the mechanical ventilation system, or would that completely negate the heat recovery?
- Exterior insulation but no separate heating in the basement?
- Exterior insulation and underfloor heating in the basement?
What temperatures and humidity levels can be expected with the different options? I would be very interested in your practical experience.
We are planning a basement for our new house, which will be used as a utility basement. The technical room (including the heat pump and mechanical ventilation system, etc.) will be located in the basement. The other rooms are intended for storage, a workshop, and storage areas. Actual living use is not planned; however, I can imagine that our children might later use the space for hobbies (music, party room, foosball, etc.) if the climate there is reasonably comfortable. Also, it should not be freezing cold when working in the workshop during winter.
What about ventilation? I have planned a few basement rooms without light wells and was considering possibly connecting them to the mechanical ventilation system if the humidity gets too high.
Now I wonder, how are utility basements commonly insulated nowadays and what effects does each approach have?
- No exterior insulation at all and only insulating the basement ceiling/stairwell? Is it then acceptable for the heat pump and mechanical ventilation system to be installed in the basement? Can the basement be connected to the mechanical ventilation system, or would that completely negate the heat recovery?
- Exterior insulation but no separate heating in the basement?
- Exterior insulation and underfloor heating in the basement?
What temperatures and humidity levels can be expected with the different options? I would be very interested in your practical experience.
G
Grobmutant6 Jan 2020 14:47The staircase will be a concrete staircase with a landing. It will lead openly from the hallway on the ground floor to the upper floor. The access to the basement will be concealed behind a standard interior door.
Vicky Pedia6 Jan 2020 16:57Grobmutant schrieb:
What exactly does "closed staircase" mean? Isn't it sufficient to have an insulated door to the basement on the ground floor?yesfragg schrieb:
Well, open staircases are currently in style, nice wooden stairs, airy, continuous all the way up. That’s how we have it. How do you plan to install a door to the basement?Not airy and continuous, at least going down.
Or airy and continuous, with the insulating door/wall installed at the bottom.
Although in new builds, utility basements are also insulated from the outside, keyword dew point shift, even if only a few centimeters (inches) thick.
G
Grobmutant7 Jan 2020 09:24guckuck2 schrieb:
In new constructions, utility basements are sometimes insulated from the outside as well, keyword dew point shift, even if only a few centimeters thick.Are they still thermally separated from the ground floor then? So minimal external insulation of the basement plus insulation of the basement ceiling against the ground floor?
In our renovation, the basement will not be included in the thermal envelope. What we need: an insulated basement ceiling (in new construction probably from above, under the underfloor heating), an insulated door to the basement, the stairs above the basement stairs will be insulated from below, and insulated side walls of the basement staircase.
I don’t think you can use a mechanical ventilation system with heat recovery for uninsulated spaces.
I don’t think you can use a mechanical ventilation system with heat recovery for uninsulated spaces.
Grobmutant schrieb:
Are they still thermally separated from the ground floor then? So minimal exterior insulation of the basement plus ceiling insulation of the basement against the ground floor?Yes, absolutely!
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