Installed a karndean korlok floating floor in a house for a couple. then the customer rings me up 2 days later and says theres a lump in the floor and sent me these pics.. It's a manufacturer defect and in the middle of the floor. The customers want it replaced and I'm frickign furious. Their an extremely fussy couple (OCD) and want it done perfect, so Im going to cut out the plank and drop a new one in its place but to do that you have to cut the tounge and groove off, if it doesn't sit in securely with the joins lifting up and down when walked on I'll have to move fridge & dishwasher, pull up all the kitchen and half the hallway just to get to it, also taking off skirting, Scotia, and dealing with all the silicon sealing I did around the kitchen, and just to make it more annoying they only had 2 spare planks left at the end of the job so if some of the boards break if I end up taking it up I'll be up for the cost of a new pack plus delivery. I tried to offer a discount even though I already did the job for a dirty cheap price but they just want it fixed(OCD) ! Im always looking out for defects but have just missed this one. Very annoying! You think the manufacturers would have a system other than us, that pics up on defects before selling them to customers. Karndean has an awfully designed L-shaped stairnosing as well that I had to use, you can only glue it on top of the planks over the edge of the step. No screws! No sloting system! And it doesn't even have grip on the top of it, it's as smooth as a baby's butt! Won't be long before someone slips down it in a pair of socks and kills themselves. That's if the trims don't break free first!