No, it is not common for Lull mattresses to sag, but sagging is among the more common complaints found about Lull mattresses online. This is especially true of their cheaper, all-foam models compared to their more expensive, hybrid ones.
Excessive sagging over 1.5″ is protected by Lull’s warranty. This warranty lasts a lifetime, with a full replacement offered to customers whose claim is accepted.
Outside of manufacturing defects, the number one cause of sagging is the use of an improper foundation. In fact, using the wrong base or foundation will void any warranty claim. To help reduce sagging, Lull recommends a solid foundation or one with slats no wider than 3″ apart.
