Bamboo parquet with controlled ventilation

We are currently building a prefabricated house with controlled ventilation and want to install bamboo parquet flooring (vertical, solid) throughout the house. The good swelling and shrinking behavior also led us to this decision. The house supplier refuses to install bamboo because there is supposedly too much shrinking behavior. Are there any experiences with this? Bamboo solid? Solid parquet at all with KBE? Which type? If not - what then?

Hi, can you report what has become of it?

The topic is somewhat older, but since it is still found on the first page, I'll give my two cents:

I have read on various supplier websites that, with bamboo, as with other parquet flooring, one should pay attention to a relative humidity of 50-60%. Naturally, this is exceeded in summer and fallen below in winter. Quote from a care instruction

"The preservation of the wooden floor and the well-being of people requires attention to a healthy indoor climate (20°C and about 50-60% relative humidity). If the relative humidity falls below this value, gaps must be expected."

A controlled residential ventilation can cause the air to be too dry in winter. The controlled residential ventilation that I chose has an enthalpy heat exchanger, which not only recovers heat but also to some extent recovers humidity. Possibly, one can counteract this somewhat in winter. But aside from that:

Bamboo parquet does not immediately get damaged by dry air. It shrinks and gaps form. But since the shrinkage behavior of bamboo is significantly better than that of other woods, I see no problem there. At least, I do not see it as more problematic than with other woods.

In winter there were no problems, but now at 70-80% humidity we have slight joint formation on the baseboards.

I always thought that with increasing humidity, parquet swells/expands. How can a gap form there? Could you maybe take a picture?

Regards
Alex

That means the gaps are dependent on the time of year?

Currently, we have a cherry parquet floor (lacquered) in the apartment. I actually only see a difference between summer and winter. In winter, I estimate a maximum gap of 0.75mm in a few places. In summer, almost none of it is visible anymore.