Board length is often the last line of a flooring specification and the one given the least thought. Yet it changes how the floor looks, how efficiently the timber is used, how the installer sets out the room and how the cartons are packed. A plank floor in random lengths and the same floor in one fixed length are two different products, and they are priced differently. This article compares the two options, explains where long boards fit, and shows how to state length clearly in an RFQ.
The two options
At Vu Uy Wood, plank flooring is offered in two length options:
- Random length from 12” to 86” (300 to 2200mm). This is the normal choice for a straight-lay plank floor.
- Fixed length and long boards up to 118” (3000mm), cut to order. Every board is cut to one length set in the specification, or to a long length where the design calls for it.
Pattern formats follow their own rule. Herringbone and chevron blocks are always one fixed length for the whole order, set from the buyer’s drawing, because the length decides the geometry of the pattern. See the herringbone specification guide. Everything below is about plank.
How each one looks
Random length staggers the end joints naturally. Because boards of different lengths are mixed across the room, the end joints fall at irregular points and the eye does not find a repeating line. The floor reads as a continuous surface of oak, with the length of individual boards less noticeable. This is the look most people expect from a plank floor.
Fixed length produces a regular rhythm. When every board is the same length, the end joints follow a set pattern: a half offset, a third offset or another stagger agreed with the designer. The result is more ordered and architectural. It suits interiors with strong lines, and designs where the floor should relate to a grid in the ceiling, the walls or the furniture.
Long boards change the scale of the room. Fewer end joints, longer runs of grain and less visual interruption make a large room look calmer and emphasize its length. Long boards pair naturally with wider faces. The wide plank guide covers what changes above 7-1/2” (190mm).
Yield and cost
Length has a direct effect on how much oak each square foot uses. The comparison here is in words only, because actual figures depend on the timber lot, the grade and the specification, and are confirmed in the quotation.
- Random length uses the timber efficiently. Each board can be cut to the longest clear length available in the piece, and knots or defects are cut out where they fall. Very little good material is wasted.
- Fixed length uses more timber per square foot. Every board has to reach one length. A piece that is just short of it must be cut down to a shorter use or set aside, so more offcut is produced.
- Long boards use the most. A long clear piece is rarer than a short one, and it becomes rarer again in stricter grades. Long boards in Premium or Select grade are the most demanding combination.
The grade effect and the length effect add together. A Natural or Rustic grade in random length is the most efficient combination. Premium in long fixed lengths is the least. Our article on oak flooring grades explains how grade affects yield on its own.
Comparison at a glance
| Random length | Fixed length | Long boards | |
|---|---|---|---|
| Range | 12” to 86” (300 to 2200mm) | One length, cut to order | Up to 118” (3000mm), cut to order |
| End joints | Irregular, natural stagger | Regular, set pattern | Few, widely spaced |
| Look | Continuous, traditional | Ordered, architectural | Calm, large scale |
| Timber use | Most efficient | Less efficient | Least efficient |
| Relative cost | Standard | Higher | Highest |
| Setting out | Installer mixes lengths on site | Planned to room dimensions | Needs flat subfloor and handling space |
Layout and installation
Length also changes the installer’s job, and the installer should see the specification before it is fixed.
Random length is laid by drawing boards from several cartons at once and mixing lengths across the floor, so short and long boards are spread evenly and end joints do not cluster. The installer sets the stagger according to their practice and the recognized installation guidance for the project. With Tongue & Groove on all four sides, end joints can fall wherever a board runs out, which is how a random-length floor is normally laid.
Fixed length needs planning to the room. Because the stagger repeats, the designer or installer should decide where the pattern starts and how it meets the walls, so the cut boards at the ends of each row are balanced. For a regular pattern, the chosen length should be checked against the main room dimensions before the order.
Long boards ask more of the site:
- The subfloor must be flat over a longer distance, because a long board bridges more of it.
- Boards are heavier and more awkward to carry, especially up stairs or in small lifts, so site access should be checked.
- Long cartons need to fit the delivery route and storage space on site.
These are installation questions, and the installer is the right person to decide them.
Packing
Random-length flooring is packed with a mix of lengths. If the project has a preference for how lengths are distributed, for example a limit on short boards, state it in the RFQ, and the arrangement is confirmed in the quotation. Fixed-length flooring packs uniformly, which makes counting and checking simpler at delivery. Long boards need cartons and pallets sized to their length, which is worth discussing with your forwarder before the order.
How to write length into the RFQ
Be specific, and give lengths in inches and millimeters:
- “Random length, 12” to 86” (300 to 2200mm)”
- “Fixed length, [length] ([mm]), half offset stagger”
- “Long board, [length] ([mm]), fixed”
If you are open on length, say so, together with what matters to you: the look, the cost or the handling. That lets the factory suggest the option that fits. The RFQ checklist shows where length sits among the other details a quotation depends on.
Working with Vu Uy Wood
Vu Uy Wood manufactures made-to-order solid and engineered French White Oak flooring in Song Than 3 Industrial Park, Ho Chi Minh City, and has done so since 2006. Random length runs from 12” to 86” (300 to 2200mm), with fixed length and long boards to 118” (3000mm) cut to order. You can see how different lengths and widths look installed on our completed work page, and set length together with construction, width, grade and finish on the Specify page. We normally reply within one working day.