Hello
I am pondering over materials for the walls. We are extending the house and building a garage at the basement level. The garage is not really much below ground, at the garage door it is obviously at ground level, otherwise maybe there is ground up half a meter along the walls at most.
Regardless, I want to consider the space as very damp in all constructional aspects and we live quite near a lake, so if the water level should rise significantly at some point, we want to minimize the damage if water were to reach the garage floor.
So, what should we ideally make the walls out of? I am currently deciding between laying walls with leca blocks or building forms and casting the walls, possibly with some insulation inside, or on the outside of the cast wall. If so, you would cast about 120mm + the insulation or something like that. In any case, they should be quite substantial walls and energy-efficient, that's important. We’re not planning on building a passive house, but the closer, the better. The wall can be 50 cm thick, as we've designed in the plan.
What do others say? Are there other good alternatives?
Thanks
I am pondering over materials for the walls. We are extending the house and building a garage at the basement level. The garage is not really much below ground, at the garage door it is obviously at ground level, otherwise maybe there is ground up half a meter along the walls at most.
Regardless, I want to consider the space as very damp in all constructional aspects and we live quite near a lake, so if the water level should rise significantly at some point, we want to minimize the damage if water were to reach the garage floor.
So, what should we ideally make the walls out of? I am currently deciding between laying walls with leca blocks or building forms and casting the walls, possibly with some insulation inside, or on the outside of the cast wall. If so, you would cast about 120mm + the insulation or something like that. In any case, they should be quite substantial walls and energy-efficient, that's important. We’re not planning on building a passive house, but the closer, the better. The wall can be 50 cm thick, as we've designed in the plan.
What do others say? Are there other good alternatives?
Thanks
I have a similar construction where I chose to build with Leca. On the part of the wall that is backfilled, I have 20 cm of Isodrän on the outside (plus geotextile), and on the part that faces the air, I have foam insulation and plaster. This way, the lower construction is completely open and can dry out in both directions, while the upper part is properly insulated and sealed (but can dry inwards if needed, provided that you paint with the right type of paint on the inside).