Thank you good people for responding to my sofa dilemma. Most of you suggested a plywood insert. I understand your reasoning and that has been tried and it’s not as comfortable as this foam is. Plywood feels like you are sitting on a cushion on wood……. Problem: new foam cannot be added to cushions.they are fine and completely stuffed. I need to find a way to insert this foam under the cushions in one piece. Should I open the lining under the cushion after I have trimmed the foam? Or should I just trim the foam in front, back far enough so that it doesn’t show? Have I gone over the edge and have lost my mind?
if I could find a way to slip this foam on the top of the springs……that’s what the sofa needs. But, I’m afraid I won’t be able to put it back together if I remove the fabric covering the springs. Has anybody ever tried this? Don’t be afraid to admit that you did and tell me how it worked.