Roll of Carpet: Broadloom Sizes, Pricing, and Buying Guide

Most residential carpet is sold in rolls, also called broadloom carpet. Understanding how carpet rolls work, what sizes are available, how they are priced, and how to calculate what you need prevents costly mistakes and wasted material. Whether you are carpeting a single bedroom or an entire house, this guide covers everything you need to know about buying carpet by the roll.

What Is Broadloom Carpet?

Broadloom carpet is manufactured in wide, continuous rolls on large industrial looms. The carpet comes off the production line in a single, seamless width, typically 12 or 15 feet. The roll is then cut to the length needed for each order. This is the standard format for residential wall-to-wall carpet installation.

The term “broadloom” simply refers to the wide loom used to manufacture the carpet. It distinguishes roll carpet from carpet tiles (modular squares) and area rugs (pre-cut, finished-edge pieces).

Standard Carpet Roll Widths

12-Foot Wide Rolls

The 12-foot width is the most common residential carpet roll size in North America. The vast majority of carpet styles, colors, and brands are available in 12-foot rolls. Most rooms in a typical home can be covered with a single 12-foot-wide piece, sometimes requiring one seam in larger rooms.

15-Foot Wide Rolls

A 15-foot width accommodates larger rooms with fewer or no seams. Some premium residential and commercial carpets are available in 15-foot rolls. If your room is wider than 12 feet, a 15-foot roll can eliminate a seam that would otherwise run through the middle of the floor.

13.5-Foot Wide Rolls

Less common but available in select products, the 13.5-foot width is an intermediate option found primarily in commercial and multi-family applications.

Why Width Matters

Seams are the enemy of a clean carpet installation. Every seam is a potential weak point where edges can fray, patterns can misalign, and wear can concentrate. Choosing a roll width that minimizes seams for your room dimensions is one of the most important decisions in the buying process.

For example, a room that measures 14 by 16 feet would require a seam with a 12-foot roll (you would need two pieces: one 12×16 and one 2×16, joined with a seam). A 15-foot roll could cover the 14-foot dimension seamlessly.

How Carpet Rolls Are Sold

Per Square Yard

The traditional carpet industry pricing unit is the square yard. One square yard equals nine square feet. When a store quotes carpet at $30 per square yard, that equals $3.33 per square foot. Many specialty flooring stores and older retailers still use per-square-yard pricing.

Per Square Foot

Big-box stores like Home Depot and Lowe’s have largely switched to per-square-foot pricing because it is easier for consumers to understand and compare with other flooring types (tile, vinyl, hardwood), which are always priced per square foot.

Per Linear Foot

Some stores sell carpet by the linear foot. This means you are buying one foot of length at the full roll width. If the roll is 12 feet wide and the price is $12 per linear foot, you are paying $12 for 12 square feet of carpet, or $1 per square foot. Linear foot pricing can be confusing, so always convert to square feet for comparison.

Converting Between Units

• Square yards to square feet: Multiply by 9.
• Square feet to square yards: Divide by 9.
• Linear feet to square feet: Multiply the linear feet by the roll width (in feet).

Calculating How Much Carpet You Need

Getting the quantity right is critical. Under-ordering means a costly re-order and possible dye-lot mismatch. Over-ordering wastes money. Here is how to calculate accurately.

Step 1: Measure Each Room

Measure the length and width of each room in feet. Measure at the widest points, including closets, alcoves, and doorways. Round up to the nearest half foot.

Step 2: Calculate Square Footage

Multiply length by width for each room. Add the square footage of all rooms together.

Step 3: Account for Waste

Carpet is cut from a roll of fixed width. The cuts must align with the roll width, which creates waste. Add 10 to 15 percent to your total square footage for waste. Complex room shapes, stairs, and pattern matching increase waste to 15 to 20 percent.

Step 4: Convert to the Store’s Pricing Unit

If the store prices per square yard, divide your total square footage by 9. If they price per linear foot, divide by the roll width.

Example Calculation

You are carpeting three rooms:

• Living room: 15 x 18 = 270 sq ft
• Bedroom 1: 12 x 14 = 168 sq ft
• Bedroom 2: 10 x 12 = 120 sq ft

Total: 558 sq ft. With 15 percent waste: 558 x 1.15 = 642 sq ft. In square yards: 642 / 9 = 71.3 sq yd.

At $4 per square foot, materials cost approximately $2,568. At $36 per square yard, the same carpet costs approximately $2,567. The numbers match because $4/sq ft x 9 = $36/sq yd.

Seam Placement

When a room is wider than the carpet roll, a seam is unavoidable. Proper seam placement makes the difference between an invisible joint and an obvious line running across your floor.

Seam Placement Guidelines

• Run seams parallel to the main light source. Light from windows and doorways highlights seams that run perpendicular to it. A parallel seam is much less visible.
• Keep seams out of high-traffic paths. Seams in doorways, hallways, and the center of rooms wear faster and become more visible over time.
• Avoid T-seams. A T-seam occurs when two seams meet at a right angle. These are weak and always visible. Professional installers plan layouts to eliminate T-seams.
• Match the pile direction. Both pieces of carpet at a seam must run in the same pile direction. If one piece is reversed, the seam will show as a color difference because light reflects off the pile differently.

A professional installer should review your room measurements and create a seam diagram before ordering. This layout plan determines how much carpet to order and where every cut and seam will go.

Carpet Remnants vs. Full Rolls

What Are Remnants?

Remnants are leftover pieces from full rolls. When a store cuts carpet for a customer’s order, the remaining piece on the roll becomes a remnant. Remnants are sold at significant discounts, typically 30 to 60 percent off the regular price, because the store wants to clear inventory.

Pros of Buying Remnants

• Major cost savings on the same quality carpet.
• Immediate availability. No waiting for a special order.
• Great for single rooms, closets, basements, and small projects.
• Can be bound on the edges and used as area rugs.

Cons of Buying Remnants

• Limited selection. You get what is available, not what you want.
• Fixed size. The remnant may not fit your room without seams or may leave waste.
• Cannot reorder if you need more. Remnants are one-of-a-kind pieces.
• May not include padding or installation in the discounted price.

When Remnants Make Sense

Remnants are ideal for single rooms under 200 square feet, bedrooms, walk-in closets, and small basements. They also work well as area rugs when professionally bound. For whole-house projects, remnants rarely work because you need consistent color and pattern across all rooms.

Cost of Carpet by the Roll

Carpet roll pricing varies by fiber, density, brand, and retailer. Here are typical material-only costs:

• Builder grade (olefin or basic polyester): $0.75 to $2 per square foot ($7 to $18 per square yard).
• Mid-range (nylon or triexta): $2 to $5 per square foot ($18 to $45 per square yard).
• Premium (high-density nylon, branded): $5 to $9 per square foot ($45 to $81 per square yard).
• Luxury (wool, designer patterns): $9 to $20+ per square foot ($81 to $180+ per square yard).

Add padding ($0.30 to $1.50 per square foot) and installation ($1 to $3 per square foot) to get the total project cost.

Delivery and Storage of Carpet Rolls

Delivery

Carpet rolls are heavy and bulky. A 12-foot-wide roll cut to 20 linear feet weighs approximately 100 to 200 pounds depending on the carpet weight. Most retailers include delivery in the purchase price or charge a flat fee of $50 to $150. The roll is typically delivered curbside or to the garage. Carrying it into the home and to the installation area is usually the installer’s job.

Storage Before Installation

If there is a gap between delivery and installation, store the roll indoors in the room where it will be installed. This allows the carpet to acclimate to the room’s temperature and humidity, which prevents buckling after installation. Keep the roll flat if possible. If it must stand on end, do not leave it that way for more than a day or two, as the weight can deform the bottom edge.

Never store carpet rolls in unconditioned spaces like garages, sheds, or outdoor areas where temperature extremes and moisture can damage the backing and fibers.

Handling Tips

• Always carry carpet rolls with at least two people.
• Avoid dragging the roll across rough surfaces, which can damage the backing.
• Keep the roll wrapped in its factory packaging until installation day to protect it from dirt and moisture.
• If the carpet gets wet during delivery, unroll it and let it dry completely before installation. Installing damp carpet leads to mold and odor.

Carpet Roll vs. Carpet Tiles

Carpet tiles (also called modular carpet) are an alternative to broadloom rolls. Tiles are pre-cut squares (typically 18×18 or 24×24 inches) with a self-adhesive or peel-and-stick backing. They are popular in commercial spaces and gaining traction in residential use.

• Carpet rolls offer a seamless look across large areas, a wider selection of styles, and a more traditional residential feel.
• Carpet tiles allow easy replacement of damaged sections, creative pattern layouts, and simpler DIY installation.

For most residential projects, broadloom carpet rolls remain the standard. Carpet tiles are a smart alternative for basements, playrooms, and home offices where individual tile replacement is a practical advantage.

Buying Tips for Carpet Rolls

• Always order from the same dye lot. Carpet color varies slightly between production runs. If you need multiple cuts, confirm they are from the same dye lot.
• Order extra. Keep a small piece of leftover carpet for future repairs. A 3×3-foot piece stored flat in a closet can save you if a section gets damaged years later.
• Have the installer create a layout plan. Before you order, a layout plan shows exactly how the roll will be cut and where seams will fall. This prevents surprises on installation day.
• Inspect the roll on delivery. Check for damage, correct color, and correct style before the installer starts cutting. Once the carpet is cut, returns are nearly impossible.

Understanding how carpet rolls work puts you in control of the buying process. For a deeper look at carpet options, materials, and maintenance, visit our carpet flooring guide.