What to Look for in a Sofa: A UK Buyer's Guide to Frames, Fillings and Fabrics

A sofa takes more punishment than anything else in the house. It gets sat on, slept on, jumped on and spilled on, and it has to look decent while it happens. Most people choose one on colour and shape alone, then wonder why it feels tired three years later. The things that decide whether a sofa lasts a decade or a drizzle are almost entirely hidden: the frame, the fillings, the weave. Here is what to look at before you hand over a deposit.

Start with the frame, because you cannot replace it

Everything else on a sofa can be reupholstered, re-stuffed or recovered. The frame is the one component you are stuck with. A good one is made from kiln-dried hardwood — beech, birch, ash and similar — because drying the timber properly stops it warping and shrinking once it is in a warm room.

Ask how the joints are put together. The best frames are dowelled, screwed and glued, with corner blocks reinforcing the load-bearing angles. A frame held together mainly with staples is a warning sign, as is structural particleboard or MDF in the arms and seat platform. Pine is cheap and light, but softwood frames tend to flex, and flexing eventually turns into creaking.

There is a simple test you can do in the showroom. Lift one front corner about 15cm off the floor and watch the opposite corner. On a solid frame, it lifts at the same time. If it stays put while the rest of the sofa twists, the frame is moving — and it will only get looser.

Cushions: what is inside decides how it feels in year five

A sofa can feel wonderful for twenty minutes and awful for twenty years. Cushion interiors are where that is decided.

Seat cushions

• High-resilience foam. Density matters more than firmness. A soft foam can still be dense and long-lasting; a firm one can be cheap and collapse. Ask what the foam is and be suspicious of a vague answer.
• Feather and down. Wonderfully soft and sink-in, but they need plumping almost daily and they flatten over time. They are also not the best choice if anyone in the house has a dust allergy.
• Feather-wrapped foam. A foam core with a feather jacket — the usual compromise, and the most common premium option. You get the softness of feather with the support of foam.
• Pocket-sprung seats. Springs inside the cushion, sometimes wrapped in foam. Supportive and comfortable, heavier to move, and usually more expensive.

Back cushions

Hollow fibre and ball fibre make lovely back cushions: light, soft and easy to reshape. Foam-backed fibre holds its shape longer, which matters if you are the sort of person who never plumps anything. Fixed backs look tidier but cannot be rotated or replaced, so check whether the maker sells replacement interiors — good ones do, and that alone is worth paying a little more for.

Once it is home, treat the cushions as maintenance rather than decoration. Plump them when you get up, rotate seat cushions front to back, and turn reversible ones over occasionally. If covers are removable, wash them to the maker's instructions, not to your instinct.

Fabrics: durability is about weave as much as fibre

Fabric durability is usually described with a Martindale rub count — a measure of how much abrasion a cloth withstands before it shows wear. Higher numbers are better, and domestic upholstery is commonly sold in bands from general domestic use up to heavy domestic. If a retailer cannot tell you the rating of a fabric, that tells you something about the retailer.

The weave matters just as much. Hold the fabric up to the light. If plenty of daylight comes through, it is loosely woven and more likely to snag on a zip, a claw or a watch strap. Tight, dense weaves cope better with busy rooms.

On fibre: linen creases beautifully and eventually wears, cotton softens with age, wool is hard-wearing and resists dirt, and velvet shows every handprint and pile direction — gorgeous, but not for everyone. With leather, the finish decides the personality. Aniline leather is natural and marks easily; pigmented or corrected leather is more uniform and much more forgiving.

If there are children, dogs or cats in the house, aim for a tight weave, a mid-tone colour that hides everyday grubbiness, and covers you can remove. Avoid pale loose weaves unless you enjoy living with a lint roller.

Measurements to check before you buy

Nobody regrets measuring twice. Work through these before you fall in love with something online:

1. Seat height, from the floor to the top of the seat cushion. As a rough guide, 40–45cm suits most adults; lower feels loungier, higher is easier on the knees.
2. Seat depth, front edge to the back of the seat. Around 50–55cm sits you upright; 60cm and over is a slouch. If you are shorter, a deep seat leaves your feet dangling.
3. Overall width and depth, including the arms. A chaise or an open end adds a surprising amount of floor space.
4. The footprint in the room. Mask it out on the floor with tape and live around it for a few days. You will spot the awkward walkway immediately.
5. Delivery access. Measure the front door, the narrowest part of the hallway, any tight turn, the stair width, the headroom at the turn, and the lift if you use one. Then check the sofa's diagonal, not just its width — a sofa tips on its side to get through, and the diagonal is what usually jams.

Questions worth asking before you pay

Frame material and joint type. Foam density or filling specification. Fabric rub rating. Whether covers are removable and cleanable. Whether legs unscrew for delivery. What the frame guarantee actually covers, and for how long. Whether the delivery team will take the packaging away. If you are ordering online, read the returns policy carefully, including who pays if the sofa does not fit through the door.

Looking after it once it is in

Lift rather than drag it into position, and keep it out of direct sunlight and away from radiators, which dry out leather and can shrink covers. Vacuum with an upholstery attachment, blot spills rather than rubbing them, and check the legs and any bolts after the first month or so, tightening anything that has worked loose. A sofa looked after this way should see you through several redecorations.

Photo: Didgeman / Pixabay