My New Sofa Has Gone Flat After 6 Months. Here's Why — and What to Do

You spent £800. Maybe £1,000. You waited 12 weeks. It arrived and it was fine.

And now, six months later, the cushions are flat. The seat base has lost its shape. It looks tired and it feels worse. And you're still paying for it.

You're not imagining it. And it's not bad luck.


Why New Sofas Go Flat So Quickly

Most mid-market sofas — DFS, SCS, Next, Argos — use standard polyurethane foam in the seat cushions. This type of foam has a relatively short lifespan under regular use. It compresses, loses resilience, and doesn't recover.

The density of the foam matters enormously. Budget and mid-market sofas typically use foam with a density of around 1.5–1.8 lb/ft³. High-quality sofas use foam at 2.0 lb/ft³ or higher. The difference in longevity is significant — often the difference between a sofa that lasts 2 years and one that lasts 10.

The retail price tells you almost nothing about the foam density. A £900 DFS sofa can use cheaper foam than a £300 sofa bought from a higher-end brand three years ago.


Can You Fix a Flat Sofa?

Sometimes. Options include:

Refilling the Cushions

You can buy replacement foam and re-cover existing cushions. A reasonable DIY job if you're handy. Cost: £40–£100 depending on the number of cushions.

Adding a Sofa Topper

A cushioned topper sits over the seat area and improves comfort without replacing the cushions. A short-term fix rather than a solution.

Professional Reupholstering

Expensive and usually not worth it on a budget sofa. Makes sense only for high-quality frames worth saving.

The honest answer: if a mid-market sofa has gone flat within a year, the frame and the rest of the materials are probably not worth investing in. You'll spend money extending the life of something that was never built to last.


What to Replace It With

Here's the counterintuitive truth: a preloved sofa from a quality original brand will outlast a new sofa from a budget retailer.

A John Lewis, Barker and Stonehouse or Furniture Village sofa from five years ago — properly cared for — still has better quality foam, better frame construction and better fabric durability than a new DFS sofa today.

These sofas appear preloved because someone moved, redecorated or upgraded — not because they wore out.

At Revived Sofas we specifically look for quality original pieces when we source stock. We check the frame, the cushion recovery, the fabric condition. If it's not genuinely good we don't list it.


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