Outdoor Sofa and Sectional Buying Guide: Sizes, Seat Depth and Modular Layouts
An outdoor sofa is bought for the long evening, which is why seat depth, cushion fill and how the pieces fit the patio matter more than the photo. This guide covers the sizes of sofas and loveseats, when a modular sectional beats a fixed sofa, how to lay out an L or U configuration, what "deep seating" means and when it is too deep, how a complete lounge set simplifies the decision, and how covers keep it all looking new.
Sofa, loveseat or sectional?
- A loveseat seats two and runs about 50 to 60 in. wide. It is the answer for a balcony, a small porch or one side of a conversation group where two chairs would feel cramped.
- A three-seat sofa runs about 72 to 90 in. wide and is the anchor of most patios. Wider than 90 in. is a four-seater and starts to need a sectional's corner to feel connected.
- A modular sectional is built from armless, corner and end units that clip or bracket together, so the layout can change when the patio does. It is the pick for a large deck, a wraparound porch or anyone who entertains in varying numbers.
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How deep should an outdoor sofa be?
Seat depth is the distance from the front of the seat cushion to the back cushion. A standard outdoor sofa seats about 20 to 23 in. deep, which lets most adults sit upright with feet on the floor. "Deep seating" means roughly 24 to 28 in. and is built for sinking back and tucking feet up; it is the comfortable choice for lounging and the wrong choice for anyone short, for an elderly parent, or for a space where people sit forward to eat off a coffee table. Overall depth, back included, runs 32 to 40 in. on deep seating, which takes a surprising amount of a small patio. A seat height of 16 to 19 in. is the easy-to-rise range. The product page states the exact seat depth and height of each piece; read that rather than the style name.
Laying out a modular sectional
Draw the space before you buy modules. The common layouts:
| Layout | Typical modules | Approximate footprint | Best for |
|---|---|---|---|
| L-shape, 5 seats | 1 corner, 3 armless, 1 end | About 100 in. along each leg of the L | A square patio corner or around a fire table |
| L-shape with chaise | 1 corner, 2 armless, 1 chaise end | About 100 in. long and 64 in. deep at the chaise | Lounging with feet up |
| U-shape, 7 to 8 seats | 2 corners, 4 to 5 armless | About 130 in. wide and 100 in. deep | A large deck, entertaining |
| Straight run with ottomans | 3 to 4 armless, 2 ottomans | About 110 in. long and 36 in. deep | Against a wall or railing, a long narrow terrace |
Leave at least 30 in. for a walkway on any side people pass, and 18 in. between the sofa front and the coffee table so legs fit and drinks are reachable. A corner unit is the piece that makes a sectional feel like one sofa rather than three chairs; two corners make a U. Ottomans turn a straight run into a chaise when pulled up and slide back under a side table after. Modules should connect with clips or brackets, because loose modules drift apart on a deck the first windy evening, and every module should carry the same seat height and depth so the join is invisible.
Lounge sets: one decision instead of five
A lounge set bundles a sofa or sectional with matching chairs and a coffee table, in one frame finish and one fabric. It removes the guesswork of matching weave colors across pieces bought a year apart and is usually the fastest route to a finished patio. Check the set's total footprint against your space the same way you would a sectional, and check that the coffee table height suits the seat height; a table 1 to 2 in. below the seat cushion is the comfortable relationship for drinks and feet.
Frames, fabrics and what to read on the product page
Most outdoor sofas sold here sit on a powder-coated aluminum frame, bare or woven with all-weather resin wicker; teak sofas are heavier and silver with age; rope sofas wrap the aluminum frame in a marine-grade cord. The materials guide compares them. Cushions should be a solution-dyed acrylic such as Sunbrella over quick-dry foam if the sofa lives in the open, and the cushions and fabrics guide explains why. The things that distinguish a sofa that lasts: a fully welded frame, a weave or finish with UV inhibitors, zippered cushion covers, ties that hold the cushions in wind, and drainage in the seat deck. Each product page states the frame, finish, fabric and dimensions of that specific piece.
Covers and off-season care
The cushions, not the frame, are what weather. A fitted cover over the whole sofa in the off-season, or over the idle weeks of high summer, is the single thing that keeps a sofa looking new. The outdoor furniture covers sold here include a fitted Telescope Casual or Castelle cover for each seating piece; it can be added from the furniture page or the cart and ships separately. When cushions do wear, the replacement cushions collection has cushions sewn by the furniture's own maker to the original pattern. The covers and winter storage guide has the full routine.
Lead times and delivery
Built-to-order seating from Castelle, Lloyd Flanders and Telescope Casual ships 6 to 8 weeks after the order is placed; Sunset West 4 to 6 weeks; Moe's Home ships within 10 days. Each product page shows its own shipping note under the price. Delivery is free curbside in the continental US; white-glove delivery, in-room placement, packaging removal and assembly are optional paid add-ons. A sectional arrives as several cartons, so plan the path from the curb. Built-to-order pieces are not returnable; order free fabric swatches before choosing a cushion fabric.
Frequently Asked Questions
- What size outdoor sofa should I get?
- A three-seat sofa about 72 to 90 in. wide suits most patios; a loveseat of 50 to 60 in. suits a balcony. Leave 30 in. of walkway and 18 in. to the coffee table.
- Is a modular sectional better than a sofa outdoors?
- It is more flexible and seats more in a corner. A fixed sofa is simpler, often lighter, and suits a straight run against a wall. Choose the sectional if your layout may change.
- What does deep seating mean?
- A seat about 24 to 28 in. deep for lounging with feet up, versus 20 to 23 in. on a standard sofa. It is comfortable for sinking back and less so for sitting upright or for shorter people.
- Can an outdoor sofa stay outside all year?
- An aluminum, wicker or teak frame can. Cover it or store the cushions over winter; a fitted cover is the practical middle path.
- How do sectional modules stay together?
- With clips or brackets under the seats. Check the product page; loose modules separate on a deck in wind.
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