Standard Medium Firm RX36 (Beige)
Most Popular, Premium High Firm: RX39 (Blue)
Most Popular! Premium Reflex 40h
RG50 Firm High Density (White)
High Density Medium Firm Reflex 50 (Pink)
If your DFS sofa cushions have gone flat, lumpy, soft or uncomfortable, replacing the old fibre filling with made to measure foam is one of the most effective ways to restore your sofa. Square and rectangular cushion interiors are the most common sofa cushion shape, making this product ideal for replacing worn seat cushions on DFS sofas, armchairs, corner units and chaise-style furniture.
Many DFS sofas use fibre-filled cushion interiors. These can feel comfortable when new, but over time the fibre can flatten, clump together and lose support. Once this happens, the cushions often need constant plumping and still never quite sit right. A foam replacement cushion gives the seat a firmer, more stable structure and helps the cover look fuller and neater.
Old fibre cushion interiors can make a sofa look tired long before the frame or cover has worn out. If the cushion cover is still in good condition, replacing the inner filling can be a much more cost-effective option than buying a new sofa.
This square and rectangle foam cushion option is ideal for replacing:
DFS sofa seat cushion interiors
Flat fibre-filled DFS cushions
Sagging square sofa cushions
Rectangular sofa cushion foam inserts
Armchair cushion interiors
Corner sofa seat cushions
Loose, baggy or misshapen cushion fillings
Worn cushion interiors from DFS and other UK sofa brands
Foam gives better structure than loose fibre and helps reduce the daily plumping and reshaping that fibre cushions often need.
Although this product is designed for DFS replacement cushion foam, it can also be used for similar square and rectangular cushions from many other UK sofa suppliers.
This may include cushions from ScS, Sofology, Furniture Village, Next, Barker and Stonehouse, Oak Furnitureland, M&S, IKEA and other sofa retailers, provided the cushion shape and measurements are suitable.
The brand name is helpful, but the key details are the cushion shape, cover size and depth. If your existing sofa cushion is square or rectangular, this page is usually the correct option for ordering a replacement foam cushion interior.
Each cushion interior is cut to the measurements you provide. For the best result, measure the cushion cover rather than the old fibre filling. Old fibre interiors can spread, collapse or distort, so they are often a poor guide to the correct finished size.
Measure the length, width and thickness carefully. The thickness should normally match the border depth of the cushion cover. Getting this right helps the new foam fill the cover correctly without leaving it loose and baggy.
If you are unsure, you can choose the customer-sending-covers option and use the free cushion fitting service. This is often the best route when replacing old fibre interiors because the cover tells the real story. The old filling usually tells lies for a living.
Sofa seat cushions need proper support. For most DFS replacement seat cushions, a medium-firm or firm upholstery foam is usually the best choice. These grades help restore seat height, improve comfort and give the cushion a more stable feel.
A softer grade may be suitable for back cushions or lighter-use cushions, but for main sofa seats, going too soft can lead to poor support. If the aim is to replace collapsed fibre with something more durable, a supportive upholstery foam is normally the sensible option.
The calculator allows you to choose from foam grades selected for cushion replacement, including popular firm and high-density options. This means you can choose a cushion feel that suits your furniture, your comfort preference and how the sofa is used.
Dacron wrap is strongly recommended when replacing fibre-filled sofa cushions with foam. It adds a soft outer layer around the foam, helping the cushion fill the cover more evenly and giving the finished seat a smoother, fuller look.
That is especially important when changing from loose fibre to foam, because foam has a more defined shape.
Dacron helps soften the edges of the foam, improves the upholstered appearance and gives the cushion a better finished profile inside the cover.
Stockinette helps the foam slide into the cushion cover more easily. This is useful for tight covers, larger cushions and replacement sofa cushions where the foam needs to sit neatly without dragging against the fabric.
It also helps protect the foam during fitting and makes the cushion easier to handle. When combined with Dacron, stockinette can help achieve a cleaner and more professional result.
Our free cushion fitting service allows customers to either order foam to the sizes supplied or send their covers in for fitting. This is particularly useful for DFS cushion replacements because older covers may have stretched or relaxed over time.
Before sending covers, it is worth checking whether the cushion covers are wider than the available space on the sofa. If the covers have stretched badly, the final size may need careful consideration so the cushions sit properly once returned.
Replacing square or rectangular DFS sofa cushions with foam can make a tired sofa feel far more supportive and comfortable. It can improve seat height, reduce sagging, restore shape and make the sofa look better in the room.
Whether you are replacing one cushion or upgrading a full sofa set, our made to measure DFS cushion foam replacements give you a practical way to refresh your furniture without the cost of buying a new sofa.
Enter your cushion measurements, choose your foam grade, and select Dacron and stockinette for the best finished result.

£4.80
£4.80
£4.80



