Just noticed in the kingspan storage / site instructions:
Ideally, boards should be stored inside a building. However, if outside storage cannot be avoided, the boards should be stacked clear of the ground, and covered with a polythene sheet or weatherproof tarpaulin. Boards that have been allowed to get wet should not be used.
So are you supposed to scrap them then ! And if you are pouring a slab over it, it will get wet ! They do not give a reason, which makes me suspicious in the first place. The foam does not seem to be very absorbent to me. The boards I have laid out have got soaked in the rain, not much I can do about that.
Anyone know *why* they say this - I mean its just not practical in many cases.
Simon.