How Much Wallpaper Do I Need? A Simple Room Measuring Guide
Choosing the perfect wallcovering is an exciting step in transforming your home. However, before placing an order, it is important to determine exactly how many rolls you will need. Accurate measurements help prevent costly mistakes, reduce waste, and ensure your installation project runs smoothly from start to finish.
At Whimsical Walls, we have created this simple guide to help homeowners estimate the quantity required for any room.
How Much Wallpaper Do I Need? Start with Wall Measurements
Step 1: Measure Your Wall Height
Begin by measuring the height of your walls from floor to ceiling. Record the measurement in feet or inches. This number will be used to calculate the total wall area that requires coverage.
Step 2: Measure the Width of Each Wall
Next, measure the width of every wall you plan to cover. Add all wall widths together to determine the combined width of the room.
Example:
- Wall 1 = 10 feet
- Wall 2 = 12 feet
- Wall 3 = 10 feet
- Wall 4 = 12 feet
Combined Width = 44 feet
Step 3: Calculate Total Square Footage
Once you have the wall height and combined wall width, use the following formula:
Combined Width × Wall Height = Total Square Footage (TSF)
For example:
44 ft × 8 ft = 352 square feet
This calculation provides the total wall area that needs to be covered.
Step 4: Account for Pattern Repeat
Pattern repeat plays a major role in determining how many rolls you need. Larger repeats require additional material because each strip must align perfectly with the previous strip.
To estimate the number of rolls required:
- For pattern repeats of 18 inches or less, divide the Total Square Footage by 23.
- For pattern repeats between 19 and 25 inches, divide the Total Square Footage by 20.
The result provides an estimate of the number of single rolls required.
Understanding Pattern Repeats and Material Usage
A pattern repeat refers to the distance between identical design elements on a roll. Every strip must be matched correctly to create a seamless appearance across the wall.
As a result, larger repeats create more waste because additional material is required to align the design. Conversely, smaller repeats create less waste and improve coverage efficiency.
Common Match Types
Random Match
A random match design does not require pattern alignment. Therefore, installation is generally easier and less material is typically needed.
Straight Match
The design aligns horizontally across each strip. Consequently, some extra material may be required.
Drop Match
The design shifts between strips and often requires the most material to achieve proper alignment.
Roll Estimation Guide for Your Project
The following chart provides a general estimate based on products with an 18-inch pattern repeat or smaller and approximately 28 square feet of coverage per single roll.
| Total Square Footage | Single Rolls | Double Rolls |
|---|---|---|
| Up to 50 sq ft | 2 | 1 |
| 50–100 sq ft | 4 | 2 |
| 101–150 sq ft | 6 | 3 |
| 151–200 sq ft | 8 | 4 |
| 201–250 sq ft | 10 | 5 |
| 251–300 sq ft | 12 | 6 |
| 301–350 sq ft | 14 | 7 |
| 351–400 sq ft | 16 | 8 |
| 401–450 sq ft | 18 | 9 |
| 451–500 sq ft | 20 | 10 |
| 501–550 sq ft | 22 | 11 |
| 551–600 sq ft | 24 | 12 |
Expert Measuring Tip
When ordering wallcoverings, it is always better to purchase slightly more material than your calculations suggest. Running short can create challenges because manufacturers may produce different runs and dye lots, resulting in slight colour variations between orders.
Additionally, we recommend that homeowners do not subtract windows, doors, or cabinetry from their measurements. Doing so helps ensure enough material is available for matching patterns, trimming, and future repairs.
Need Help Estimating Your Project?
Estimating the correct quantity can sometimes be confusing, especially when dealing with feature walls, murals, custom products, or large pattern repeats. Fortunately, the team at Whimsical Walls is here to help.
Whether you are purchasing a new wallcovering from our boutique store or planning a professional installation project in Greater Vancouver or the Fraser Valley, we can help you determine the correct quantity before you place your order.
Contact Whimsical Walls today for expert advice on measuring, product selection, and installation services.