Is there a way to tighten up support for mattress on a sofa bed? Mine
by
Jeannette
Mine says in middle. Bought a good memory foam mattress but no help.
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That has always been a problem with most convertible sofa/beds, sagging in the middle. With the structure/style of your couch, it would be hard to give a specific answer. Click on the links below to find a solution for your sofa/bed.
https://www.hunker.com/13403847/how-to-fix-a-sagging-sofa-bed
https://www.youtube.com/watch?v=KOO8Oy_v9Ls
This will sound crazy but we purchased strapping that had a buckle. They are actually intended for use to hold pieces of wood together while glue is drying. Home Depot or Lowe's should carry them. Any strap with buckle that can be tightened would do. Add several across the span and see if it helps. Over time the springs will sag. If the strapping sags over time, you can tighten it at the buckle.