--- title: "Floor Sofa Metal Bars: Size, Height and Wood Floors" url: "https://cushionguide.com/answers/floor-sofa-metal-bar-size-floor-protection/" section: "The Cutting Table" author: "Hana Lindqvist, The Quiet Geometer of Seattle" author_url: "https://cushionguide.com/masters/hana/" published: "2026-04-09" updated: "2026-09-24" keywords: "floor sofa metal bars scratch floor, floor sofa support bars size, floor sofa rubber protectors, floor sofa bar height, steel support bars floor couch" --- # How thick are the floor sofa's metal bars, and will they scratch my wood floor? *Three numbers decide it. The tube, the wall, the height. Only one of them can change.* Also asked as: How thick are the metal supports?; Do the bars have rubber on the bottom? > **The quick answer:** Floor sofa metal bars are steel tubes 5/8 in (1.6 cm) in diameter with stoppers underneath, so buy rubber protectors in that size if you want extra care for a wood floor. The tube wall is 1/16 in (1.6 mm), and a thicker 0.075 in (1.9 mm) wall is possible. The bar height, about 23 in (59 cm), is standard and can't be increased. ![Overhead view of a cream velvet floor sofa with mustard ends and bolster, beside olive branches in a vase on a wooden stool](https://cushionguide.com/media/modular-floor-sofas/mustard-velvet-floor-sofa-overhead-mediterranean-1600.webp "Seen from above, the floor sofa's layout is clear: one long base, two backrests and a bolster arm.") ## Key facts - The support bars are steel tubes 5/8 in (1.6 cm) in diameter. - The tube wall is 1/16 in (1.6 mm); a 0.075 in (1.9 mm) wall is possible. - Bar height is about 23 in (59 cm) and can't be increased. - The bars have stoppers underneath. - Updated bars ship unassembled and are easy to put together. - On a two-seater, two small bars do the job of one wide bar. ## “How thick are the metal supports?” 5/8 in (1.6 cm) across. Steel, not aluminum. That is the number to take to the hardware store. Rubber protectors in that size can be waiting before the sofa arrives. ## “Will they scratch my floor?” The bars have stoppers underneath to protect floors. On a wood floor you care about, a rubber protector on each foot adds a second layer. It is a small thing, and it asks nothing of the sofa. The bars do quiet work besides. At the sides and back they hold the backrests up, which is why the modular floor sofa can stand free of a wall, in the middle of a room if you like. What kind of floor will your sofa stand on? ## “Can they be taller, or thicker?” Thicker, yes. The standard tube wall is 1/16 in (1.6 mm); a 0.075 in (1.9 mm) wall is possible. Taller, no. The bar height of about 23 in (59 cm) is standard and can't be increased, so a request for 27.5 in (70 cm) gets a kind no. Height is a feeling, and this one is set. ## “Can I buy spares? Mine has two small bars.” Spare bars have their own listing. The updated bars ship unassembled and go together easily. On a two-seater, two small bars do the same job as one wide bar. The [floor sofa support bars pattern](https://cushionguide.com/guides/floor-sofa-support-bars-assembly/) covers assembly and sliding. The [modular floor sofas atlas](https://cushionguide.com/cushions/modular-floor-sofas/) shows the layouts, and the glossary explains [metal support bars](https://cushionguide.com/glossary/#metal-support-bars). A tube, a wall, a height. Two you can choose around. The floor is yours to protect. > **Tailor's margin:** Floor sofa metal bars are 5/8 in steel tubes; buy rubber protectors in that size before the sofa arrives to look after a wood floor. > The metal bars on a floor sofa stand about 23 in tall, a standard height that can't be raised; only the tube wall can go thicker. > > — Hana ## Buyer questions **A common question:** How thick are the metal support tubes? I want rubber protectors so they don't scratch my floor. **The workshop's answer:** The support bars are 5/8 in (1.6 cm) in diameter, so you can buy protectors in that size before the sofa arrives. The bars are steel. **A common question:** Will the metal bars scratch a wood floor? **The workshop's answer:** The bars have stoppers underneath to protect floors. On a wood floor you care about, rubber protectors made for 5/8 in (1.6 cm) tubes add a second layer. **A common question:** Can I buy replacement support bars, and can they be taller or thicker? **The workshop's answer:** Yes, spare bars have their own listing. The updated bars ship unassembled but are easy to put together. The wall is 1/16 in (1.6 mm) thick and a 0.075 in (1.9 mm) version is possible; the bar height, about 23 in (59 cm), is standard and can't be increased. ## Questions buyers ask next ### Do the support bars need assembling? Yes, a little: the updated bars ship unassembled and go together easily, with no special tools. If a bar arrives damaged or missing, photograph it with the packaging the day the box opens and send the photos to the workshop. ### Why does my two-seater have two small bars instead of one wide one? On a two-seater, two small bars do the same job as one wide bar. They hold the backrests just as a single bar would, and each one has stoppers underneath, so rubber protectors in the 5/8 in (1.6 cm) size fit every foot. ### What size rubber protectors fit the support bars? Look for protectors made for 5/8 in (1.6 cm) tubes, the diameter of the steel support bars. Buy them before the sofa arrives so they go on the first time the bars are set up; the bars already have stoppers underneath. ## Related at the atelier - [How do I put the metal bars on my floor sofa together?](https://cushionguide.com/answers/floor-sofa-metal-bars-assembly/): To assemble floor sofa metal bars, twist and push each joint until the small spring dots click into the holes. - [Will the floor sofa's metal bars scratch my hardwood floor?](https://cushionguide.com/answers/floor-sofa-metal-bars-scratch-hardwood/): Yes, bare metal bars can scratch hardwood, so put something between them and the floor: a rug, a small piece of fabric, or felt furniture feet. - [What do the metal bars on a floor sofa actually do?](https://cushionguide.com/answers/floor-sofa-metal-bars-what-they-do/): The metal bars on a floor sofa keep the backrest cushions from sliding back or tipping over when you lean on them. - [Stacked Modular Floor Sofa in Cobalt, Raspberry and Mustard](https://cushionguide.com/readings/stacked-velvet-floor-sofa-cobalt-raspberry-mustard/): A modular floor sofa stacked three bases high reaches an ordinary sofa seat height, and the same pieces unstack into floor beds. - [Modular Floor Sofa in Rose Velvet: Craft Seen at Floor Height](https://cushionguide.com/readings/rose-velvet-floor-sofa-low-angle-sunset/): A modular floor sofa in velvet shows its finishing best at floor height in low light: a straight seam where two colors meet, clean box edges with no piping to hide behind, and pile that catches the… - [Modular Floor Sofa Stacked Three High in Velvet](https://cushionguide.com/readings/stacked-floor-sofa-navy-pine-green-rust/): A modular floor sofa sets its seat height by stacking: one base is a floor cushion, two make a low couch, and three reach armchair height, as in this cream velvet set. - [Boneless sofas and couches explained: foam, metal bars and the box they arrive in](https://cushionguide.com/guides/boneless-floor-sofas/) - [Is a floor sofa right for you? Floor couch height, back support and space](https://cushionguide.com/guides/floor-sofa-buying-guide-height-space/) *— Hana* --- Written by Hana Lindqvist (https://cushionguide.com/masters/hana/) for CushionGuide (https://cushionguide.com/about/). The site explains made-to-measure cushions and the partner workshop makes them; measurements are in inches first. This Markdown mirrors the page at https://cushionguide.com/answers/floor-sofa-metal-bar-size-floor-protection/