Understanding the Basics of Wallpaper Sizing
It is crucial to understand the basics of wallpaper sizing before embarking on your interior decorating project. With some understanding of the wall dimensions, wallpaper roll dimensions, and the pattern, you can calculate the number of rolls of wallpaper you will need.
Square Footage of the Room
The first step in determining wallpaper requirements is to calculate the square footage of your walls. This involves measuring the height and width of each wall in inches and converting this to square feet. Subtract any areas that will not be covered, such as windows and doors.
Wallpaper Roll Dimensions
Typically, a standard roll of wallpaper in the United States measures 27 inches wide by 15 feet long, providing around 30 square feet of wallpaper. Some rolls, however, may vary in size so always remember to check the dimensions before your purchase.
Once you have the total square feet of your walls and the square footage that a roll of wallpaper covers, you can perform the calculation. Divide the total wall square footage by the square footage covered by one roll. The result will provide you with the number of rolls needed. It's always recommended to buy an additional roll or two for unexpected need or damage.
If you are using patterned wallpaper, you will need to factor in the pattern repeat. The pattern repeat is the distance between the point where a design begins on one roll of wallpaper and the point where it begins on the next. This will ensure that you can match the patterns between rolls. This can increase the number of rolls required depending upon pattern size.
Another important factor to consider is wastage. This refers to the amount of wallpaper that is cut away and discarded after hanging. Professional decorators generally allow around 10% wastage on straightforward rooms, and potentially higher for rooms with lots of windows, doors, or complex shapes.
Double Roll vs Single Roll
Wallpapers also come in either single roll or double roll. Double rolls cover twice the amount of space that a single roll covers. It's essential to switch your total wallpaper needs into the same units as the wallpaper being sold to avoid confusion.
With these key points in mind, you can confidently estimate the amount of wallpaper needed for your next home decorating project.
Important Factors Influencing Wallpaper Quantity
When figuring out how many rolls of wallpaper you'll need for your project, it's important to consider several key factors. Each of these variables impacting the quantity of wallpaper you’ll require are essential to get calculated accurately for a successful wallpaper application.
First and foremost, determine the total area of the walls you plan to cover by measuring the height and width of each wall. Don’t exclude any section of the wall in your calculation, even if you don't plan to wallpaper it. You can always subtract areas for doors and windows later.
Does your chosen wallpaper have a pattern? If it does, you'll need to take into account the 'pattern repeat', that is, the frequency at which the pattern repeats itself down the roll. The larger the pattern repeat, the more wallpaper you'll need to ensure pattern consistency.
Window and Door Deductions
You don't generally apply wallpaper over doors and windows, so you will need to calculate the areas of these and subtract them from your total wall area.
Type of Wallpaper
Different types of wallpapers come in different size rolls. Make sure you know the square footage that each roll of your chosen wallpaper will cover.
Number of Coats
If you're using wallpaper to cover a dark or bold color, you might need more than one layer. This will increase the quantity of wallpaper required.
Ceilings and Borders
If you plan to wallpaper your ceiling or use border paper, these areas should be measured separately and added to your overall calculation.
Due to measuring errors, pattern matching, or complex room shapes, there is often waste. A safe approach is to add an extra 15% to your overall wallpaper needs to compensate.
Reserve For Future Use
Having an extra roll or two on hand for future repairs may be a wise investment. Patterns can be discontinued, and dye lots can vary, causing color mismatches if you need to buy more wallpaper later.
How to Measure Your Wall Accurately
Measuring your wall is the first and most crucial step in determining the amount of wallpaper you will need. Following the correct steps ensures you don't end up with too little, or too much, wallpaper. In this section, we will walk you through the process step-by-step.
Calculate Wall Surface Area
The first step is to calculate the wall area. To do this, measure the height and width of your wall. This can easily be done with a retractable measuring tape. Multiply the height by the width to get your total wall surface area. All measurements should ideally be done in meters as this is the standard unit of measurement for wallpaper rolls.
Subtract Windows and Doors
Your wall might contain windows or doors, which will not need wallpaper. Calculate the surface area of every window and door, just as you did for your wall, and subtract these from your total wall area.
Calculate Wallpaper Roll Coverage
Check the product descriptions to find out how much area one roll of wallpaper covers. This is typically listed in square meters. If it's not, you might have to call the manufacturer or retailer to get this information.
Avoid Under and Overestimation
To avoid underestimation and ensure proper coverage of your wall, it's always advisable to add an extra 10-20% to your total needed wallpaper measurements. This will give room for errors, trimmings, or mis-cuts.
Stick to the Pattern Repeat
Patterned wallpaper requires more rolls than plain ones because the pattern needs to match at the seams. Refer to the wallpaper's label for information about the pattern repeat and make additional calculations accordingly.
To get the final estimate of how many rolls of wallpaper you need, divide the adjusted total wall area by the coverage of one roll. Lastly, round up your results. It's always better to have a bit too much than too little.
If these calculations seem daunting, consider consulting a wallpaper professional or using an online wallpaper calculator for more precise estimations.
The Role of Wallpaper Pattern Repeat in Your Calculations
The pattern repeat of a wallpaper is a game-changer when it comes to the quantity of wallpaper rolls you'll require. It's a key factor often overlooked, making it important enough to warrant our attention.
Understanding Pattern Repeat
The pattern repeat refers to the vertical distance between where the wallpaper pattern is identical again (repeats). For instance, stripes, plaid and other geometric patterns will have a very small repeat because the pattern is the same throughout. Conversely, large designs and scenes will have a large pattern repeat because the design is more complex and larger.
Effect of Pattern Repeat on Wallpaper Usage
Keeper in mind, the larger the repeat, the more wallpaper roll you'll need. This is because a large repeat means that you have to match the design from strip to strip, which often requires cutting off and wasting a good bit of wallpaper. For patterns with large repeats, it's not as simple as just cutting the strips to the length of the wall.
Calculating the Number of Rolls
When you include the pattern repeat in your calculation, always ensure to account for the vertical pattern repeat in the length of each strip. Here's how:
- Measure the height of your room and add the pattern repeat to it
- Divide this by the length of wallpaper on the roll
- If there’s a remainder, you'll have to round up to the next roll
It's always best to overestimate rather than underestimate the amount of wallpaper you'll need when dealing with large pattern repeats.
Exceptions to the Rule
While the rule generally applies, smaller pattern repeats or non-repeating patterns, such as random match patterns, may not need the extra calculation as you can hang the next strip of paper directly next to the previous one without considering the repeat.
Considering Drop Match Patterns
Drop match patterns need to be specifically accounted for while calculating as they are designed such that the pattern is not repeated across the width of the wallpaper but rather diagonally. Therefore, these patterns need extra material to match up and line up correctly, requiring extra wallpaper.
Working with pattern repeats can indeed be a bit challenging, but with careful planning and calculating, you can ensure you purchase the correct number of rolls and prevent hassles in your wallpapering project.
Steps to Calculate the Number of Wallpaper Rolls Needed
Choosing the perfect wallpaper design is only the first step towards changing the atmosphere of your room. The next step is calculating how many rolls of wallpaper you will need. There's nothing worse than running out of wallpaper halfway through the job. Therefore, it is important to ensure that you have an ample amount before you start. Follow these practical steps to calculate the number of rolls you need.
Step 1: Measure the Wall Space
Using a measuring tape, measure the height and the width of each wall that you intend to wallpaper. Make sure to measure from the floor to the ceiling. For large surface areas, it may be best to divide the wall into sections and add the figures together afterwards.
Step 2: Calculate the Total Wall Area
Multiply the height of the wall by its width to obtain the surface area. Repeat this for each wall or section and then add these together to get the total wall area. Remember, wallpaper is often sold in square feet or meters, so you may need to use unit conversions to ensure everything aligns.
Step 3: Accounting for Windows and Doors
Subtract the surface area of doors and windows from the total wall area. To do this, measure the height and width of each door or window, calculate their area, and then subtract these from your total wall area.
Step 4: Understand The Wallpaper Roll Packaging
Take note of the number of square feet or meters each wallpaper roll covers. This is typically written on the packaging. Keep in mind that due to matching up patterns and likely wastage, it’s better not to rely on this number entirely.
Step 5: Calculate the Number of Rolls
Now, divide the total wall area (minus doors and windows) by the coverage of one roll. This will give you the number of rolls needed. If you get a fraction, always round up to the next whole number. It's always better to have too much than too little.
Step 6: Always Buy Extra
Finally, always buy at least one extra roll. This comes in handy if you make a mistake, need to replace a section in the future, or if the wallpaper batch has slight colour differences. Many suppliers accept returns if they are unused.
Step 7: Start your Wallpaper Project
With the calculation done, it's time to start your project with confidence, knowing you have ample wallpaper rolls to complete your task without unexpected interruptions.
Mistakes to Avoid When Buying Wallpaper Rolls
Navigating the wallpaper market can be a daunting task. A lack of understanding in terms of quantities, measurements or even the quality of the wallpaper itself can potentially result in unnecessary expenses. The following are common wallpaper-related mistakes to avoid :
1. Incorrect measurements
One of the most common missteps when purchasing wallpaper is inaccurate measurement of the walls. It is essential to measure the height and breadth of the room accurately to ensure you buy the correct amount of wallpaper. An overestimation may result in wasted expenditure, while an underestimation can necessitate another order – often in a different batch, resulting in a slight variation in colour.
2. Not accounting for pattern repeats
For wallpapers with patterns, you need to ensure that you buy extra to account for pattern matching. The 'repeat' is the vertical distance between where the pattern is identical again (repeats). Accounts for this repeat can save you from running short of wallpaper.
3. Failing to account for waste
While measuring your walls, remember to include extra allowance for waste, particularly if you have a lot of doors and windows in the room. Usually, an allowance of 15% on top of your actual measurement is sensible.
4. Overlooking the type of wallpaper
There are various types of wallpapers in the market with differences in terms of material and application methods. Understanding your preference, be it non-pasted, pre-pasted or peel-and-stick, can save you from buying the wrong type.
5. Neglecting test samples
Purchasing wallpaper rolls without first checking a sample can create problems. The color of the wallpaper might look different under your room's lighting. Getting a sample allows you to be sure about the design and how it fits in with your decor.
6. Ignoring the batch numbers
Finally, wallpaper comes in different batch numbers, due to differences during each production cycle. Slight variations can occur between batches. Ensuring that all the wallpaper you purchase comes from the same batch can save you from subtle discrepancies in color and pattern.
By being aware of these potential pitfalls, you can buy the perfect wallpaper for your space with confidence and astute judgement, ensuring a satisfying result!
Tips for Saving on Wallpaper and Reducing Waste
Wallpaper is a wonderful way to give a fresh, new look to any room, but getting just the right amount can be tricky. It's not only important to avoid buying too little wallpaper, but also to avoid buying too much to prevent waste and stay within a reasonable budget. Here are some tips on how you can save on your wallpaper and reduce waste:
1. Precise Measurement
The first step to saving on wallpaper begins with accurate measurement of your room. Measure the length and height of each wall in the room you are wallpapering. Be as accurate as possible, as this will determine the number of rolls you will need.
2. Consider the Repeat Pattern
Take into account the repeat pattern of the wallpaper. Some prints may need to be aligned, which can result in more wastage. Non-repeatable patterns are the best in terms of saving wallpaper.
3. Use a Wallpaper Calculator
Online wallpaper calculators are a great tool to determine exactly how many rolls you will need, depending on the dimensions of your room. These calculators often factor in doors and windows as well, which can aid in minimizing waste.
4. Buy in Batches
If possible, buy your wallpaper in batches to avoid shade variation between rolls. It is also wise to purchase an extra roll for potential mishaps or future repair.
5. DIY Installation
By installing the wallpaper yourself, you'll be able to monitor the usage and control the wastage more effectively. Remember to work carefully and methodically to avoid costly mistakes.
Recycle or Reuse Wallpaper Remnants
Last but not least, reduce waste by recycling or reusing leftover wallpaper. You can use them for wrapping gifts, making envelopes, or even as book coverings. Be creative and explore possible uses for these remnants.
By following these money-saving tips, you'll not only stay within your budget, but also contribute to a more sustainable home improvement project.
Case Scenarios: Examples for Different Room Dimensions and Wallpaper Types
To make calculating wallpaper needs easier, let's explore common room dimensions, different types of wallpapers, and examine a few scenarios.
Determining the Area
To determine how many rolls of wallpaper you need, you must first measure the area of your walls. Most rooms have four walls, so it's a simple process of totaling their square footage. However, consider any windows, doors, or other features that may affect the total area.
Standard Single Roll Sizes
It's also essential to understand wallpaper roll sizes. In America, a single roll typically comes in two sizes: Small, which covers 25 or 27 square feet, and large, covering around 56 square feet.
Scenario 1: Small Bedroom
Consider a small bedroom measuring 10 feet by 12 feet, with 8-foot ceilings. The four walls equate to 320 square feet. Subtracting for a standard door (21 square feet) and a window (15 square feet), you're left with 284 square feet. If using small-sized rolls, divide the total square footage by 25, rounding up. In this instance, you'll need 12 rolls.
Scenario 2: Master Bedroom
A master bedroom is often 14 feet by 16 feet, with 9-foot ceilings. The total square footage is 433, excluding two windows and two doors. After subtraction, we’re left with 372 square feet ― hence 14 rolls would be needed if choosing small-sized rolls.
Types of Wallpaper
Different types of wallpaper include vinyl, non-woven, and traditional. These types don't vary so much in size, but they do in installation methods, some requiring additional materials or tools. Always account for these differences when calculating your needs.
Scenario 3: Using Traditional Wallpaper
Traditional wallpapers require you to paste the wall first. This could mean you need additional wallpaper to allow for any errors in application. Let's consider the master bedroom from earlier. If you were using traditional wallpaper, you might round up your roll estimate to 16 to ensure you have plenty for any adjustments or mishaps.
Remember, it's always better to overestimate slightly when it comes to wallpaper. If a particular pattern is discontinued, you could be left with an unfinished project, so order a little extra to account for any unexpected issues.