Hello, I recently found some problems with the wood boards under my balcony. There is a gap between the wood boards, which appears to be a result of wood decaying (see the picture below, taken top down). The balcony extends out from the main bedroom and is about 7 meters above the ground, which means it is possibly not the type of DIY job. I put some extra nails into the board and they do not close the gap. I do not know the structure supporting the balcony as it is all hidden. I also...

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