Wallpapering Size: Your Complete Guide to Getting It Right First Time
Understanding Wallpapering Size Before You Begin
If you’re planning a wallpapering project, one of the most important steps—often overlooked—is accurately calculating your wallpapering size. Getting this right ensures you purchase the correct number of rolls, avoid mismatched patterns, and save time, money, and effort.
At PeterJohn Interiors, we help our clients choose the perfect wallpaper for their homes, and part of that process includes helping you understand your wallpapering size to ensure a seamless finish.
How to Measure Wallpapering Size Accurately
Calculating your wallpapering size starts with measuring the wall area you want to cover. Follow these simple steps:
- Measure the height and width of each wall (in metres).
- Multiply the height by the width to get the total square metre area.
- Subtract any large areas you won’t be wallpapering (e.g. windows, doors, or built-in units).
Repeat this for every wall and then add the total areas together to determine the full wallpapering size of your space.
Considering Pattern Repeats and Wastage
When choosing wallpaper, it’s essential to factor in pattern repeat sizes. This affects how much extra paper you’ll need beyond your raw wallpapering size.
Types of pattern repeats:
- Straight match – simple repeat across the wall
- Drop match – patterns stagger between strips, requiring more waste
- Free match – no pattern alignment needed
To account for this, always add 10–15% to your total wallpapering size. Our team at PeterJohn Interiors can help calculate this for you during a consultation.
Matching Roll Size to Your Wallpapering Size
Once you know your wallpapering size, it’s time to match it to the number of wallpaper rolls needed. Most standard wallpaper rolls in the UK measure 10.05m x 0.52m, covering roughly 5.2m².
To calculate the number of rolls:
- Divide your total wall area (in m²) by 5.2
- Round up to the nearest whole number
This ensures you have enough paper and allows for off-cuts or pattern matching. Still unsure? Bring your measurements to our Aylesbury or Berkhamsted showrooms, and we’ll do the maths for you.
Tools and Materials Needed for Measuring Wallpapering Size
Before you start measuring, make sure you have the right tools:
- Tape measure (ideally 5m+)
- Notepad or measuring app
- Calculator (or speak to us!)
- A second person (helpful for tall walls or awkward spaces)
Having precise tools helps you determine an accurate wallpapering size, especially in rooms with alcoves, sloping ceilings, or irregular layouts.
Special Considerations for Complex Wallpapering Sizes
Some areas in the home can be trickier to measure. If you’re dealing with unusually shaped walls, stairwells, or rooms with slanted ceilings, it’s best to consult a professional.
At PeterJohn Interiors, we offer in-home consultations where we’ll measure your wallpapering size accurately, taking into account architectural quirks and design goals. This service is ideal for period properties or when using luxury or patterned wallpapers that require careful alignment.
Why Getting the Right Wallpapering Size Matters
Incorrect measurements can result in several issues:
- Not enough rolls – leading to mismatched batch numbers
- Wasted material – causing unnecessary cost
- Delays in project timelines – waiting for new rolls to arrive
- Disrupted patterns – especially problematic with bold or intricate designs
By understanding your wallpapering size from the start, you’ll avoid these pitfalls and enjoy a smoother, more efficient decorating process.
Let PeterJohn Interiors Help with Your Wallpapering Size
Knowing your wallpapering size is key to a successful wallpaper installation—and we’re here to help at every stage. From helping you measure and calculate quantities to selecting the perfect design from our wide range of designer brands, our experienced team makes the process easy and enjoyable.
Book a consultation or visit our showrooms in Berkhamsted or Aylesbury to get personalised advice, expert tips, and a stunning range of wallpapers to suit every home style.
