A L‑shaped corner sofa is often the centrepiece of a Bristol living room. It winds around the bay window of a Clifton flat, anchors a family room in Bradley Stoke, or creates a cosy nook in a harbourside apartment. But when the fabric begins to fade under the strong South West light or the cushions carry the marks of a thousand film nights, the search for a sofa cover begins — and that search starts with a tape measure. An L‑shaped suite looks complicated, but measuring it for a stretch sofa cover is simpler than you think. The secret is to treat it not as one giant shape, but as two distinct rectangles. Get these dimensions right, and the cover you choose will slip on smoothly, grip tightly, and stay crease‑free through every film, every sprawl, and every damp dog shaking off the rain from the Downs.
The golden rule: treat your L‑shaped sofa as two separate sofas
An L‑shaped suite has a longer section (the main seating area) and a shorter return (the chaise or corner piece). To measure it correctly, you will need to capture the dimensions of each section individually, then combine them to select the right size sofa cover. All measurements should be taken at the widest points, with the tape measure held straight and taut. Use centimetres for the most accurate match with size charts.
1. Measure the total width of each section
Longer section (Section A).
Measure from the outside edge of the left armrest to the point where the sofa bends to form the corner. If the sofa has no armrest on the corner side, measure to the outermost edge of the seating area at that end. This is your width A.
Shorter section (Section B).
Measure from that same corner point to the outside edge of the right armrest (or the end of the chaise). This is your width B.
Together, width A and width B define the footprint of your suite. A typical UK L‑shaped sofa might have a longer section of 230–280 cm and a shorter section of 160–190 cm, but Bristol homes — with their Victorian proportions and modern open‑plan layouts — can vary enormously.
2. Measure the depth of each section
Depth is measured from the front edge of the seat cushion to the backrest. For both sections, run the tape from the very front of the cushion straight back to the point where the back cushion meets the frame. Do not include the thickness of the backrest itself; the stretch couch cover will wrap around that later.
If your sofa has loose back cushions, press the tape gently against them until you feel the solid frame behind. If the cushions are fixed, measure to the seam where the seat meets the backrest. Record depth A and depth B separately — they are often slightly different, particularly if one section is a chaise.
3. Measure the total height
Height is the vertical distance from the floor to the highest point of the backrest. On an L‑shaped sofa, the backrest is usually the same height across both sections, but measure both to be sure. Run the tape straight up from the floor, keeping it perpendicular. This measurement ensures your sofa covers uk piece will be long enough to tuck securely beneath the frame without riding up.
4. Measure the chaise depth (if applicable)
If your shorter section is a chaise — a long, extended seat without a backrest — measure its depth separately. Run the tape from the front edge of the chaise cushion to the point where it meets the back of the sofa. This dimension can be significantly larger than a standard seat depth, and a stretch splicovers cover needs enough fabric to wrap it smoothly.
Common measuring mistakes to avoid
Measuring around curves or loose cushions. Always measure in straight lines. Let the tape hover over gaps rather than dipping into them.
Forgetting the armrests. Your width measurements must go from the outer edge of one arm to the outer edge of the other. The cover needs to wrap the entire structure, not just the seating area.
Eyeballing. An L‑shaped sofa that looks “about the same size” as a friend’s suite can differ by 20 centimetres or more. That margin is the difference between a crisp, tailored fit and a loose, baggy cover that needs constant re‑tucking.
Why measuring matters for a stretch cover
A precision‑fit sofa cover is designed to work with your measurements, not against them. Our Sofa Covers at sofacoveruk.com are cut from a dense, two‑way stretch polyester jacquard or velvet that moulds to the exact contours of your suite. Deep elasticated hems grip the frame and hold the fabric taut, so the cover stays smooth through every sit‑down and every evening sprawl. But for the stretch to work its magic, the base size must be right. A cover that is too small will strain at the seams; one that is too large will billow and slip. Taking ten minutes to measure carefully is the single most important step you can take toward a living room that looks professionally dressed.
The Bristol L‑shaped sofa, beautifully covered
Once you have your measurements, the right covers for sofa set will slip on in minutes and stay put for years. No custom commission, no waiting list, and no four‑figure bill. Browse our full Sofa Covers Bristol collection and discover the colours, textures, and precision fits that are quietly transforming L‑shaped suites right across the city. Then put your tape measure away, pour yourself a cup of tea, and let the cover do the rest.
