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.

sm_jamieson wrote:
> 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.
I suspect because they will cause damp in timber structures if sodden..

Don't worry: screed dries out in time..a long time..like a month or two. 
The water, if it migrated in, will eventually migrate out again.

On 20 Aug, 21:42, sm_jamieson  wrote:
> 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.

Simply de-humidify if you are in any doubt
It sounds like a cover my a*** caveat from a manufacturer bordering on
an unfair contract term!
Chris G