We recently moved to a new house, which has a sun room built on as an extension. There's a little gap between the living room floor and the door frame of the sun room... I've attached a photo of what it looks like from above; you can see the white door frame and the gold edge of the living room floor. The second photo shows the little gap.
The gap seems to just lead to the foundations; although it's small, it's big enough for us to keep losing little bits of Lego and things like that.
Would there be a reason for the gap? Like ventilation or something? Or could I get some sealant or something and just block it up?
Anyone had similar?