L-Shaped and Corner Sofa Covers — How to Cover a Sectional Perfectly

If you have tried to cover an L-shaped or corner sofa before, you already know: the corner is where every ordinary slipcover fails. The fabric bunches, pulls tight on one side, or will not reach the other. One arm looks fitted; the chaise hangs loose. Most people try two or three covers, give up, and conclude that their sofa simply cannot be covered. This is an engineering problem, not a fitting problem — and WavyTech™ exists precisely to solve it.

Why Standard Covers Fail on Sectionals

A standard sofa cover is designed for a linear geometry: back, seat, arms. The fabric is cut and structured to handle a rectangular configuration with a consistent width. When applied to a corner or L-shaped sofa, this geometry breaks down at the join. The cover fabric spans the angle rather than contouring it — meaning it either pulls tight across the corner or has excess fabric on one side that it cannot accommodate.

The 90° corner joint in a sectional sofa creates a fundamentally different tension requirement than a straight sofa. The fabric needs to stretch not just in one or two directions, but around a geometric transition. WavyTech™ dual-direction stretch — horizontal and vertical simultaneously, extending to 120% of the base dimension — creates enough adaptive tension to contour this transition cleanly. No other slipcover technology is engineered for this purpose. This is the gap our complete furniture care guide refers to when discussing sectional covers specifically.

Corner Sofa vs L-Shaped Sofa — Which Cover Do You Need?

This is the question most buyers get wrong, and it results in ordering the wrong product. The distinction is structural:

Corner Sofa — a symmetric sectional where both sides are the same length and meet at a 90° angle in the centre. When you face the sofa, both sides look balanced. A Corner Sofa Cover covers this configuration as a single unit. Available in back lengths 180–370 cm, height up to 100 cm.

L-Shaped Sofa — an asymmetric sectional where one side is a full sofa back and the other is an extended chaise section (lower, with no back). The chaise can be on the left or right side of the sofa depending on the room layout. L-Shaped covers are produced in Left Chaise and Right Chaise versions — they are not interchangeable because the internal structure of the cover differs to match the asymmetric geometry.

To determine left vs right: stand facing the sofa from the front. If the chaise extends to your left, order Left Chaise. If it extends to your right, order Right Chaise. L-Shaped covers accommodate back lengths of 180–370 cm and ledge lengths (the chaise section) of 100–170 cm.

Measuring a Sectional for a Cover

Sectional measurement uses the same back-length principle as standard sofas — always measure excluding armrests — but applies it to each section separately before combining. Full measurement instructions for sectionals are in our guide to measuring your sofa for a slipcover. The key measurements for sectionals:

• Total back length — measure the long side of the sofa back (excluding armrests) and the shorter side separately, then add them together. This combined measurement must fall within 180–370 cm.
• Ledge length (L-Shaped only) — measure the chaise from the inner face of the corner join to the end of the chaise (excluding the armrest if present). This must fall within 100–170 cm.
• Height — measure the sofa back height from the seat to the top of the back. Must not exceed 100 cm.

How to Fit an L-Shaped or Corner Cover

The fitting process follows the same principle as a standard sofa — start from the back, not the seat — but requires additional attention at the corner join. Full fitting instructions are in our step-by-step fitting guide. Specific notes for sectionals:

• Fit the longest sofa section first, using the back-to-seat-to-arms sequence
• Work the corner panel over the 90° join with both hands, pulling downward and outward from the centre of the join
• Tuck generously at the corner join — this is the highest-tension area of the cover
• Fit the chaise or second section last
• Use anti-slip inserts at the join gap — this is the most important tuck point on a sectional
• Allow 15–20 minutes for the first fit; subsequent fittings are faster

Available Sectional Covers

Bellissima sectional covers are available in Microfibra Embossed and Microfibra Printed in the following configurations:

• Corner Sofa Cover — back length 180–370 cm, height up to 100 cm
• L-Shaped Sofa Cover (Left Chaise) — back 180–370 cm, ledge 100–170 cm
• L-Shaped Sofa Cover (Right Chaise) — back 180–370 cm, ledge 100–170 cm

Frequently Asked Questions

How do I know if my chaise is left or right?

Stand facing your sofa from the front — the position you would stand in to sit on it. If the extended chaise section is on your left, order Left Chaise. If it is on your right, order Right Chaise. This is based on your perspective facing the sofa, not the sofa's perspective facing the room.

My corner sofa's two sides are different lengths — will the cover fit?

If the two sides differ significantly in length, your sofa is likely an L-shaped configuration rather than a true corner sofa, even if the join is at 90°. Measure both sections separately. If one side is notably shorter than the other and lower (a chaise), choose the L-Shaped cover. If both sides are approximately the same height and length, choose the Corner Sofa Cover.

Can I use two standard covers on a sectional instead of one sectional cover?

Two standard covers on a sectional will not cover the corner join — there will always be exposed upholstery or poorly covered fabric at the point where the two covers meet. A dedicated sectional cover is the only solution that covers the 90° join cleanly.

Are sectional covers available in all fabrics?

Sectional covers are currently available in Microfibra Embossed and Microfibra Printed. Goffrato Cotone and Goffrato Velvet are available for 1, 2, and 3 seater configurations only.