Originally Posted by GerriJ
... We overcame this , for the most part, by installing a 1" sheet of Styrofoam (the pink stuff - 3 pieces as they are only 2' wide) under the mattress.
If it was pink, it wasn't Styrofoam™
(Dow's trademark colour is blue); the same material (extruded polystyrene foam) in pink is likely FoamularŪ
. Another brand is Kingspan's GreenGuard (yes, it's green). Having mutiple brand names can make it easier to find a suitable product.
Any brand of this extruded
polystyrene foam board would be greatly preferable to expanded polystyrene beadboard (the cheap white stuff).