What is the standard spacing for flooring?

Author: Shaylee Windler  |  Last update: Sunday, September 21, 2025

In general, the standard spacing for floor joists is 16 inches on center (OC) for 2x6 and 2x8 joists, and 24 inches OC for 2x10 and 2x12 joists. In other words, the centers of each joist are spaced either 16 inches or 24 inches apart from each other, measured from the center of one joist to the center of the next.

What is the rule of 3 flooring?

This rule says you should use three flooring types at maximum throughout the whole home. For example, you might use hardwood in public areas of the house, except the kitchen and bathroom, where you use vinyl linoleum.

What is the proper spacing for floor joists?

Proper joist spacing is required for proper installation. Joist spacing should never exceed 16” on center unless using TT/AZEK Max board= 24" max. For a more rigid feel, 12” or less, may be preferred. If adding additional framing be sure to keep all boards even and in plane across tops.

Are floor joists placed on 12 or 16 centers?

Most often, floor joist spacing is 16 inches apart on center, but this can vary depending on building codes and the requirements of the structure in the blueprint. Floor joists help distribute the load of a structure.

What is the spacing for vinyl planks?

For correct spacing, the generally acceptable distance is about six inches. Of course, that will also depend on the plank size. Typically, a six-inch distance works well with planks measuring up to three inches. For wider planks, maximum spacing of 10 inches would be ideal.

Science of Simple Spans of Floor Joists

What is the gap for vinyl plank flooring?

Measure out the length and width of the room, and divide the width of the room by the width of the planks. Plan for ¼” gap along the walls to allow for expansion. This will tell you how many rows of planks you need. Before you start laying the floor, keep in mind: the first and last row should be at least 2” wide.

How many spacers do I need for vinyl plank flooring?

You will need a spacer near each end of the starting wall and one each where boards join. I would leave those in place throughout the project. On the remaining rows, you will need one spacer at the start of each row.

What is code for distance between floor joists?

16 inches on center (16" O.C.): This is one of the most common joist spacings used in residential construction. It provides stable and uniform support for most types of flooring materials, including plywood and oriented strand board (OSB).

Is Trex ok on 16 centers?

Most joist spacing for most composite and PVC decking brands, such as Trex, AZEK, TimberTech, and Fiberon, require a minimum joist spacing of 16″ on-center for straight decking and 12″ on-center for diagonal decking at a 45-degree angle.

Are 2x4s ok for floor joists?

For average storage use, 2x4 16" O/C is a standard floor joists with good strength. For customers looking to increase their load capacity with standard 2x4 floor joists, then consider spacing your floor joists 12" O/C.

Should floor joists be 16 or 24?

In general, the standard spacing for floor joists is 16 inches on center (OC) for 2x6 and 2x8 joists, and 24 inches OC for 2x10 and 2x12 joists.

What is the best flooring for an attic?

Resilient flooring, such as laminate or vinyl, is one of the best choices you can make for attic floors. This type of flooring can soften the sounds when installed over an underlayment.

How thick should a subfloor be?

For these types of flooring, a minimum subfloor thickness of 3/4-inch is crucial, whether you choose plywood or Oriented Strand Board (OSB). This thickness is necessary to provide a sturdy and stable base that can support the nails or glue used to secure the flooring materials.

How much gap should I leave for flooring?

Generally, a gap of 1/4 inch to 1/2 inch is recommended for hardwood flooring, while laminate flooring typically requires a gap of 1/4 inch to 3/8 inch. It's important to note that the expansion gap should be consistent throughout the room, including around obstacles such as doorways, cabinets, and pipes.

What is the 3 4 5 rule flooring?

Put a mark on the board at the 3 feet point. Now, measure the adjacent board from the same corner to 4 feet and put a mark there. Then, measure the distance between the two marks. If it is 5 feet, then you have a perfectly square corner.

What is the formula for flooring?

Square footage = Length (feet) × Width (feet)

Accurately calculating it before beginning any project can help save time and money in the long run by making sure that the materials ordered are exactly what is needed for a certain space and nothing more or less than what is required.

Is Trex or TimberTech better?

In the battle of timbertech vs trex, choosing the best composite decking depends on your specific needs. Timbertech is ideal for its weather and moisture resistance, whereas Trex offers better scratch resistance and is more budget-friendly.

Does Trex sag over time?

Trex composite decking responds to environmental factors by expanding and contracting, much like other outdoor materials. Improper spacing can lead to buckling, warping, and moisture buildup, which may damage both the deck boards and the substructure over time.

Should I use 2x6 or 2x8 for deck joists?

Commonly used joist sizes are 2-by-6, 2-by-8 and 2-by-10. For example, when you space joists 16″ apart — which is standard for residential decks — a deck spanning 9 1/2′ would require 2-by-6 joists, a 13′ deck would need 2-by-8 joists and a 16′ deck calls for 2-by-10 joists.

What is the space between floor joists called?

SPAN: Distance between supports, usually a beam or joist.

How far can a 2x12 span for floor joist?

Note that the allowable span for 2 inch by 12 inch (51 mm by 305 mm) is 18 feet, 1 inch (5512 mm). Therefore, use 2-inch by 12-inch (51 mm by 305 mm) joists at 16-inch (406 mm) spacing. The span tables account for a uniform load condition.

Do and don'ts for vinyl flooring?

For a more thorough clean, consider using a microfiber mop dampened with water or a manufacturer-approved vinyl floor cleaner. Avoid using harsh chemicals or abrasive cleaners as well as tools such as steel wool, as they can strip away the floor's protective coating and cause discoloration.

How soon can you walk on vinyl plank flooring after installation?

Tiles or planks that are glued down, however, need time to set. This process takes at least 48 hours. Like luxury vinyl, carpet and laminate that is not glued to the subfloor can be walked on immediately. Brands that must be glued down are not ready for furniture for at least 24 hours.

What is an acceptable gap in vinyl plank flooring?

The pass level for ASTM F 2199 is such that shrinkage of up to 0.024” / linear foot is considered a “pass”. This equates to a maximum allowable gap of 0.072” for a typical three foot plank, which is more than double the thickness of a credit card.

Previous article
Where to put white vinegar in a washing machine?
Next article
How deep should you bury perforated drain pipe?