Hello,
My wife and I live in a house with a basement that covers about 25% of the building area. The basement is divided into 2 parts with a door in between: 1 hall of about 6 sqm with an exit to the back of the property, and from there, there is a door to an area transitioning into a crawl space.
We are planning to install a staircase from the living area of the house down to the basement hall. We would like to do this without separating these spaces with a door as it's difficult to find space for it. There are about 20cm thick concrete blocks of some kind in the outer wall of the basement. No insulation. There is also a hole into the crawl space where cold air flows in. Moreover, the bedrock protrudes from the concrete floor in one spot (about 50x50cm).
Currently, cold air flows up from the basement through the hole already made and which we have covered with a temporary OSB board. If we
1) seal the hole to the crawl space and
2) lay electric underfloor heating loops on the floor (the slab is insulated and prepared) and
3) seal the door to the other room in the basement
Do you think this will be sufficient to maintain around 15C in the basement hall without breaking the bank on electricity, and prevent cold air from coming up to the living area? Or will we need to frame the walls and insulate to make it good?
I understand that it is impossible to give any definite answers just from the information above, but I am interested in hearing about your experiences with similar problems and/or ideas for alternative solutions.
