New cushion foam can make a tired sofa feel supportive again, but simply choosing the firmest option is rarely the best approach. Cushion size, cover construction, body weight and the support beneath the cushion all affect the finished feel.

Firmness is not the same as quality

Firmness describes how the cushion feels under load. Density relates more closely to the amount of material and often to durability. A very firm foam can still be unsuitable for the cushion, while a softer specification can perform well when correctly chosen.

The fit matters

Replacement foam normally needs to fill the cover neatly without straining seams or leaving loose corners. The shape may include curves, tapers or wrapped edges. Accurate measurements and the existing cover help establish the correct profile.

Check the support below

If webbing, springs or the frame have failed, new foam may still sink or feel uneven. Remove loose cushions and gently inspect whether the platform beneath them is level and supportive. Avoid dismantling fixed upholstery yourself.

Seat and back cushions need different thinking

Seat cushions carry more weight and usually require resilient support. Back cushions often need a softer, more yielding construction. Using the same material everywhere can make the sofa feel wrong.

Information that may help later

You do not need photographs or measurements to request a visit. If useful after our first conversation, we may ask about:

  • Photographs of the sofa and each cushion.
  • Cushion width, depth and thickness.
  • Whether the covers are removable.
  • How the cushions currently feel.
  • Your preferred comfort level and postcode.

A short conversation about use and comfort is as important as the measurements. The goal is not merely to fill the cover—it is to make the sofa feel right again.

For advice about a specific piece, request a free quotation visit and we will call to arrange a suitable time to view it.