The floor is damp because it is too close to the concrete base and there is garden soil leaves accumulating round. It needs to be lifted, the base cleared and put on blocks to ventilate and dry the wood.
Difficult job putting concrete slabs under shed in a corner of the garden and clearing surround. First of all we had to postpone a couple of times due to weather. Arrived on time with colleague, polite, determined, completed the job well and made adjustments as requested. Very happy with the work and would recommend.