They do look sturdy and I love the white finish. 13 yo is nearing 6ft already so I was starting to worry that bunks weren't an option. Thanks for the link, the high sleeper with a separate bed underneath could be an option for us too.
We are about to move house which will mean that my 10 and 13 yo sons will share a room. The room isn't very big and although it will take two single beds it would be better to have bunk beds. The problem is that the boys would need a bunk bed safe for adult use but I can't seem to find anything suitable. Nor do any of the beds stipulate max weight limit. Does this mean that most people use single beds as the kids get older or is there a suitable bunk bed you can recommend.