We place our wooden walls straight on the concrete foundation, and then, between our walls, the cement & concrete guys add a few extra layers:
- floor heating
- chape, or cement
- optionally: tiles, or a wooden floor.
In this house we don’t do layer 4. No tiles, no wood, just cement on top. Looks cool and modern, and contrasts nicely with the wooden walls. Just a matter of preference. The combination of floor heating and a wooden floor is a little unusual, but we have wooden floors that are specially engineered to be combined with floor heating.
The main problem with this floor? Layer 3: the cement. We need to bring a 35 tonnes cement mixer to the island, on a pontoon. Today was pontoon day.
We start with a floor like this: concrete load bearing base, then insulation, floor heating (that’s the yellow lines), steel grid.
Here comes the pontoon with the cement mixer:
The cement mixer can’t drive on the island as it would disappear into the soft soil immediately, so we run a tube from the mixer to the house, thirty meters.
Time to flip the switch and pump the concrete into the house. Note that all walls are protected with temporary plastic foil.
The cement guys use a laser to measure the height. After two hours they are done and we have a flat top layer.
Flat, but not flat enough. The cement dries for about two hours, and then another team shows up with a special machine to finish the top and make it absolutely flush and polished.