I have had the bed for about four months now. If bigger people are on the top bunk, it will squeak a lot when they are moving. If the bigger people are on the bottom and the smaller on top, its doable. Still squeaks, but not as bad. I have not tried tightening the bolts yet but I am sure that would help along with some squirts of wd/40. I am happy with the purchase because it gives us so much more sleeping space as well as floor space underneath the bed. Well made, easy to assemble and useful.
Be gentle with the bed and you should be fine.
I have had the bed for about four months now. If bigger people are on the top bunk, it will squeak a lot when they are moving. If the bigger people are on the bottom and the smaller on top, its doable. Still squeaks, but not as bad. I have not tried tightening the bolts yet but I am sure that would help along with some squirts of wd/40. I am happy with the purchase because it gives us so much more sleeping space as well as floor space underneath the bed. Well made, easy to assemble and useful.