How Much Extra Flooring Should You Buy for Your Project?

You've measured your rooms, chosen your flooring, and you're almost ready to order. But there's one detail that's easy to overlook: how much extra flooring should you buy?

Ordering exactly enough to cover your square footage might sound like the smart way to save money. The problem is that flooring rarely fits perfectly from wall to wall. Planks need to be trimmed around corners, doorways, and other obstacles, and not every leftover piece can be reused.

Buy too little, and you risk running out halfway through installation. Buy too much, and you're left paying for boxes you may never open.

Fortunately, figuring out the right amount isn't complicated. A few measurements and a realistic allowance for cutting and waste can help you order with confidence.

How Much Extra Flooring Do You Really Need?

For most flooring projects, 10% extra is a good starting point.

If you're covering a 500-square-foot area, that means planning for approximately 550 square feet of flooring.

However, the right amount depends on your room layout, flooring material, and how the planks will be installed.

Here's a simple guideline:

• 5%–10% extra: Straight installations in simple, rectangular rooms.
• 10%–15% extra: Rooms with multiple corners, closets, or diagonal layouts.
• 15%–20% extra: Detailed patterns such as herringbone or chevron.

These are general estimates, not strict rules. Some flooring products have specific installation requirements, and particularly complicated layouts may need more material.

If you're working with a professional installer, it's worth asking them to confirm the waste allowance before placing your order.

Why Is Extra Flooring Necessary?

Even an experienced installer can't avoid every cut or use every leftover piece.

Imagine installing new floors in your living room. The first few rows go down without a problem, but eventually, a full plank won't fit against the wall. It needs to be cut.

Sometimes the remaining piece can be used in another row. Other times, it's too short or the wrong shape.

Now add a few doorways, a hallway, and a closet, and those small cuts start adding up.

There are other reasons to have extra flooring, too.

A plank might get damaged during installation. You may come across a natural wood board with a grain pattern you'd rather use somewhere less noticeable. Or you might make a cutting mistake during a DIY project.

Having a little extra flooring gives you room to work without worrying about every single plank.

It also leaves you with some material for future repairs, which can be especially helpful if your flooring is discontinued.

How to Calculate the Right Amount of Flooring

You don't need a complicated formula to estimate how much flooring to buy. Start with your room measurements, add a waste allowance, and calculate the number of boxes you'll need.

1. Measure Your Floor Space

Measure the length and width of your room in feet, then multiply the two numbers.

For example, if your room is 15 feet long and 12 feet wide:

15 × 12 = 180 square feet

That's your starting point.

If you're installing flooring in multiple rooms, measure each one separately and add the totals together.

For irregularly shaped rooms, divide the space into smaller rectangles and calculate each section.

Be sure to include hallways, closets, and any other areas where the flooring will continue.

2. Add Your Waste Allowance

Once you know the square footage, add the appropriate percentage for cutting and waste.

For a standard installation, let's use 10%.

180 × 1.10 = 198 square feet

That means you'd plan to buy enough flooring to cover approximately 198 square feet instead of just 180.

If your layout is more complicated, you may need to increase that percentage.

3. Calculate How Many Boxes to Order

Most flooring products are sold by the carton, with each box covering a specific number of square feet.

Let's say you've chosen flooring that covers 22 square feet per box.

198 ÷ 22 = 9 boxes

In this case, nine boxes would cover your estimated material requirements.

If the calculation comes out to 9.4 boxes, round up to 10. Flooring is generally sold in full cartons, so you'll need enough boxes to meet or exceed your estimate.

Always check the square footage per carton before ordering. Coverage varies between products.

Does the Type of Flooring Affect How Much Extra You Need?

The flooring material can influence how much waste you'll have, although the room layout and installation pattern are often more important.

Hardwood Flooring

Hardwood flooring naturally varies from plank to plank. Differences in grain, color, and knots are part of what makes real wood appealing, but they can also affect where you want certain boards installed.

You may prefer to place a board with a prominent knot in a less noticeable area, for example.

Combined with the cutting required around walls and doorways, these considerations make an allowance of around 10% a practical starting point for many hardwood installations.

If you're exploring options, Nature Wood Floors offers a selection of hardwood flooring in different species, finishes, and styles.

Engineered Hardwood Flooring

Engineered hardwood comes in a variety of plank widths and lengths, including wide-plank styles that are popular in modern homes.

For a straightforward installation, 5%–10% extra material may be enough. More complicated layouts often require additional flooring.

Longer or wider planks can sometimes leave offcuts that aren't useful elsewhere in the room, so it's a good idea to plan the layout before placing your order.

Luxury Vinyl Plank Flooring

Luxury vinyl plank (LVP) is a popular choice for homeowners who want the appearance of wood with easy maintenance.

In a simple rectangular room, 5%–10% extra is often a reasonable estimate.

However, if you're installing LVP throughout several connected rooms, including narrow hallways and closets, the amount of cutting can increase.

Also, keep in mind that the locking system may prevent some leftover pieces from being reused.

Laminate Flooring

Laminate flooring typically follows similar waste calculations to vinyl plank.

For a standard layout, plan on approximately 5%–10% extra material, adjusting upward for complicated spaces.

Because laminate planks connect through a locking system, incorrectly cut pieces or damaged edges may not be usable.

How Your Flooring Pattern Affects Waste

One detail that can make a big difference is the direction and pattern of your flooring.

Two rooms with identical square footage can require different amounts of material simply because the planks are arranged differently.

Straight Plank Installation

This is one of the most common flooring layouts.

Planks run parallel to a wall, and installers can often reuse leftover sections from one row in another.

Because the cuts are relatively straightforward, this layout generally produces less waste.

For most simple rooms, 5%–10% extra material is a reasonable estimate.

Diagonal Installation

Diagonal flooring can give a room a more distinctive appearance, but it usually involves additional cutting.

Since planks meet the walls at an angle, the leftover pieces aren't always suitable for another section of the floor.

A waste allowance of around 10%–15% is often more appropriate.

Herringbone and Chevron Patterns

Herringbone and chevron flooring can create a striking look, especially with hardwood or engineered wood.

But these designs require more precise cuts and careful planning.

Depending on the product and room layout, you may need 15%–20% extra flooring or more.

For these installations, it's best to have your contractor calculate the material requirements based on the exact pattern.

How Much Extra Flooring Do You Need for 1,000 Square Feet?

Let's say you're replacing the flooring throughout a 1,000-square-foot area.

Here's how much material you'd need with different waste allowances:

Waste Allowance	Extra Material	Total Flooring
5%	50 sq. ft.	1,050 sq. ft.
10%	100 sq. ft.	1,100 sq. ft.
15%	150 sq. ft.	1,150 sq. ft.
20%	200 sq. ft.	1,200 sq. ft.

For a straightforward installation, ordering around 1,100 square feet would be a good starting estimate.

If your home has several small rooms, angled walls, or a decorative flooring pattern, you'll likely need to account for more waste.

Remember that the final order should also be rounded up to full cartons.

Should You Buy an Extra Box for Future Repairs?

If your budget allows, keeping an extra box of flooring can be a smart decision.

Even durable floors can get damaged. A heavy object might leave a deep scratch, furniture could chip a plank, or a small section may eventually need replacing.

Having matching flooring from your original purchase makes repairs much easier.

There's also no guarantee you'll be able to find the exact same flooring years from now.

Manufacturers regularly update their collections, change finishes, or discontinue certain products. Even when the same flooring is still available, different production batches may have slight color variations.

You don't necessarily need several extra boxes. For many homes, keeping a few spare planks or one unopened carton is enough to give you some flexibility.

Just make sure you store them in a dry, climate-controlled space according to the manufacturer's recommendations.

Common Flooring Ordering Mistakes to Avoid

A little planning can save you from some frustrating problems once installation begins.

Forgetting small spaces: Closets, hallways, and connecting rooms all count toward your total square footage. Measure everything before placing your order.

Using the same waste percentage for every project: A simple bedroom and a herringbone installation won't necessarily require the same amount of extra flooring.

Not checking carton coverage: Flooring products come in different sizes and quantities. Always calculate your order using the actual square footage per box.

Changing the installation pattern after ordering: Switching from a straight layout to a diagonal or decorative pattern could increase the amount of material you need.

Assuming you can easily order more later: Your flooring may be temporarily unavailable, discontinued, or supplied from a different manufacturing batch.

Forgetting installation accessories: Underlayment, transition strips, moldings, and stair parts may need to be purchased separately.

Before ordering, double-check your measurements and make sure your installation plan is finalized.

Frequently Asked Questions

Is 10% Extra Flooring Enough?

For many standard installations, yes. A 10% waste allowance is a good starting point for hardwood, engineered wood, laminate, and vinyl plank flooring. More complicated layouts may require 15%–20% or more.

How Much Extra Hardwood Flooring Should I Buy?

For a typical straight installation, plan on approximately 5%–10% extra hardwood flooring. The exact amount depends on the room layout, plank sizes, and installation pattern.

How Much Extra Vinyl Plank Flooring Do I Need?

Most straightforward vinyl plank installations can start with a 5%–10% waste allowance. Increase the estimate for rooms with multiple corners, closets, or angled cuts.

Should I Round Up When Ordering Flooring?

Yes. Since flooring is generally sold in full cartons, always round up to the next whole box if your calculation results in a fraction.

Is It Worth Keeping Leftover Flooring?

Yes. Saving a few extra planks can make future repairs easier, particularly if your flooring collection is discontinued or changes over time.

Plan Ahead and Get the Right Flooring for Your Project

Running short on flooring is one of those renovation problems that's much easier to prevent than fix.

For most straightforward installations, adding about 10% to your measured square footage is a practical place to start. From there, consider your room layout, flooring material, and installation pattern to determine whether you need more.

Taking a few extra minutes to measure carefully and double-check your order can help you avoid delays, unnecessary expenses, and the hassle of searching for matching flooring later.

At Nature Wood Floors, you'll find a wide selection of hardwood, engineered hardwood, luxury vinyl, and laminate flooring for projects of all sizes. Whether you're updating a single room or renovating your entire home, choosing the right flooring and ordering the right amount will help your project get off to a better start.

Explore the flooring options at Nature Wood Floors and find the right materials for your next project.