How Many Rolls of Wallpaper Do I Need for a Room?

by Rizwan

Are you planning to give your room a makeover with a fresh burst of colors and patterns? Wallpaper can be an excellent choice, adding character and style to your space. However, a common question arises: “How many rolls of wallpaper do I need for a room?” This comprehensive guide will break down the factors you must consider and help you calculate the perfect amount for your wallpaper project.

Understanding Your Room Dimensions

Before diving into wallpaper patterns and designs, understand your room’s dimensions. Measure the height and width of each wall, and remember to account for any doors or windows. This crucial step will serve as the foundation for determining the amount of wallpaper needed.

Wallpaper Roll Size

Different wallpaper manufacturers produce rolls of varying sizes. Knowing the dimensions of the wallpaper rolls you’re considering is essential. Standard wallpaper rolls typically cover about 28 square feet, which can vary. Check the product specifications to ensure accurate calculations.

Calculating Square Footage

To determine the total square footage of the walls you plan to cover, multiply the height of each wall by its width. Add up these measurements for all walls in the room. Now, you have the total square footage that needs to be covered.

Pattern Repeat and Matching

One aspect often overlooked is the pattern repeat and matching. Patterns on wallpaper may have a repeat, and aligning them correctly is crucial for a seamless look. Check the manufacturer’s instructions for the pattern repeat, and factor this into your calculations.

Accounting for Waste

To accommodate for potential errors, pattern matching, and unexpected obstacles, it’s advisable to include a waste factor in your calculations. Adding 10-15% to your square footage can account for trimming, pattern matching, and future repairs.

Choosing the Right Wallpaper Type

The type of wallpaper you choose can also impact the quantity required. Some wallpapers are more forgiving regarding matching patterns and waste, while others may require more precision.

Considering the Room’s Purpose

Take into account the purpose of the room. High-traffic areas benefit from durable and washable wallpaper, while a bedroom allows for more delicate options. This decision can influence the quantity needed.

Accounting for Doors and Windows

Subtract the square footage of doors and windows from the total square footage calculated earlier. This ensures you’re not purchasing excess wallpaper that won’t be used.

Making the Purchase

With all the necessary calculations, it’s time to make your purchase. Remember that buying a little extra is always better than falling short mid-project. An extra roll or two can be a lifesaver in case of miscalculations or future repairs.

Check for Batch Numbers

If you need multiple rolls of the same wallpaper, ensure they come from the same batch. Batch variations can result in slight color differences, affecting the overall aesthetic.


In conclusion, determining how many rolls of wallpaper you need involves careful consideration of your room’s dimensions, wallpaper roll size, pattern repeat, and the type of wallpaper. By following these steps and accounting for potential challenges, you’ll be well-prepared for a successful wallpaper installation that transforms your space.


Q: Can I return unused wallpaper rolls?

  • A: Return policies vary, so checking with the retailer is essential. Some may accept returns, while others may have specific conditions.

Q: What if my walls have irregular shapes?

  • A: For irregular walls, measure the height and width at multiple points and calculate the average for a more accurate estimate.

Q: Do I need a professional installer for wallpaper?

  • A: While it’s possible to DIY, professional installers can ensure a flawless finish, especially with complex patterns.

Q: Can I mix different wallpaper patterns in one room?

  • A: Yes, but it requires careful consideration of color schemes and patterns to achieve a cohesive look.

Q: Is it necessary to prep the walls before wallpapering?

  • A: Proper wall preparation is crucial for a smooth and long-lasting wallpaper application.

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