I've just had 25 sqm of decking done over my patio. It's laid on a concrete slab and some slabs using 3x3 posts for the framework. The reason I used 3x3 is my mate runs a fencing company and he supplied it all. Last night I cleaned it all off and I was going to oil it when I got back from work tonight, when I looked at it tonight I've noticed that 7 of the boards have got sort of splits/cracks running down them intermittently some of them are a foot long but only a couple of mill thick and they're not going towards the screws (SPAX).
My mates said he'd swap them no problem but Im a bit worried about it happening again, has this happened to anyone else? Any preventative measures I can take.
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