I had new laminate flooring laid 6 months ago. I found someone on Gumtree who said he would lay flooring in 2 rooms and a hallway for £220. Anyway he came here and laid it and I paid him, about 3 months after this the flooring started to go funny, it has 'raised' in several places and now over lapped on itself. It's so bad that if you step on one bit of it another bit pops up! It's tripped me up and others a few times. I've actually never seen flooring like it! Anyway after googling it turns out the man who laid it has not left an expansion gap and that it is needed for laminate flooring as it expands. So it has expanded and has had nowhere to go other than to overlap on itself. Basically the whole flooring is now unusable and all needs to be ripped up and replaced. It cost £600 in total to get the flooring and have it laid. A friend has suggested I ask the man to come back pretend I have more work for him then when he gets here tell him he has to sort the whole thing out a relay new flooring for free. I'm not sure, wibu to do that? He is obviously not going to come back out of the kindness of his heart as I don't know anything about him or where he lives so he doesn't need to.