Please note – Timber is a naturally porous material and as such can absorb or release moisture at any time depending on weather conditions at the time. Some timbers may have knots ,twists,splits,cracks,swelling and shrinkage unfortunately this is out of our control but if returned in the same condition as supplied and fitted by ourselves within 7 days of fitting we will refund or exchange the product. (we only offer a free delivery and fitting service dismantles and returns will incurs a cost upto £200) Unfortunately a bespoke shed made to your own requirements can not be returned or refunded and will only be made at your own risk.