Having made a strong comeback for over a decade, wallpaper has proven to be much more than just a trend, establishing itself as a top-tier decorative tool for transforming all types of spaces. This is due to both its high visual impact and its affordability, along with its vast array of designs. However, when it comes to choosing wallpaper, especially when buying online, one of the most common questions is about how much wallpaper is needed, as running short can be problematic. Therefore, in this guide, we want to show you how to calculate the wallpaper required to avoid waste and ensure a professional finish.
Fundamentals for Calculating Wallpaper: Measurement and Number of Rolls
The first step in calculating the wallpaper needed is to carefully measure the walls. To do this, we recommend keeping the following tips in mind:
- Measure the height and width: Use a tape measure or laser measure to get the precise dimensions of each wall you plan to wallpaper. It’s crucial to measure from the floor to the ceiling and from one corner to the other. If the height varies at different points on the wall, it’s best to use the largest measurement to ensure the wallpaper covers the entire surface.
- Calculate the total area: Ideally, multiply the height by the length of each wall to obtain its area in square meters. If you have multiple walls, it’s best to repeat the calculation for each one and then sum all the areas to get the total area to be covered.
- Consider doors and windows: While it’s true that these openings reduce surface area, a common practice is not to discount them entirely, as the cuttings from these areas are often used to cover small spaces above or below, or for future repairs. Nevertheless, a partial deduction can be made if the openings are particularly large.
- Know the standard roll dimensions: Most wallpaper rolls have a standard size of 0.53 meters wide by 10 meters long, which can cover approximately 5 square meters. However, it’s essential to always check the technical specifications of the product you wish to purchase, as certain designs may have different dimensions.
- Make the initial roll calculation: Once you have determined the total area of the walls and the coverage of the roll, it’s best to make a preliminary estimate by dividing the total area to be covered by the coverage of a single roll. It’s crucial to always round up to ensure you have enough material.
A Crucial Factor: The Design “Rapport”
Along with the above, one of the most important elements that is often overlooked when calculating wallpaper is the rapport or pattern match. This term refers to the vertical distance in centimeters at which a pattern repeats on the roll of paper. Understanding this aspect is key to ensuring that designs align perfectly between strips, avoiding visual interruptions.
There are different types of rapport available today, and each affects the amount of wallpaper needed. Here are some possibilities:
- Straight Rapport: This means that the design repeats at the same height on all strips. Generally, it is recommended to add at least one additional roll to the initial calculation for this type of paper.
- Free Rapport: This is the easiest type to install since there is no fixed pattern in the design that must match between strips. It’s perfect for plain wallpapers, abstract patterns, or textured designs.
- Offset Rapport: In this case, the design repeats with a partial shift on each strip. To align the patterns, the strips must be placed with a slight adjustment up or down. This is common in geometric or floral prints. Typically, the shift information is indicated in the product’s technical specifications.
In addition to the mentioned aspects, it’s always important to add a safety margin or an extra roll, especially with complex designs or patterns. You can also use a wallpaper calculator to ensure you purchase the right amount.
If you want to buy wallpaper online and are wondering how much wallpaper you need, at Deco & You, we offer a wide variety of products from the best brands on the market, while our team is ready to assist you in your search. Contact us and give your home a fresh new look.
