Wallpaper adds dimension and visual interest to your room. It can also hide minor wall imperfections and cover stains.

Most wallpapers come in single or double rolls. A standard roll contains about 35 square feet of usable wallpaper.

Find out how much wallpaper you need by adding up the perimeter of your walls and multiplying that number by their height. Then factor in waste factors and pattern repeats to calculate your total surface area.

Perimeter of the Walls

No room is exactly the same size and wallpapers come in a variety of lengths and widths. Additionally if the wallpaper has a pattern you have to take into account a repeat. This can be difficult to calculate without a yard stick.

Once you have the perimeter of the walls, add together each wall’s height and width to find the total surface area. This is also referred to as the room’s square footage. I recommend this website for more wallpaper singapore.

Now you need to add the allowances for doors, windows and any other openings into this number. This is called the adjusted room area. Then multiply the room area by the wallcovering’s width and height to determine how much material you need to order. Lastly, factor in the pattern repeat and waste factors. It is always a good idea to buy a little extra, especially for projects that are being done on a tight schedule. Buying additional wallpaper can prevent delays if a certain roll is discontinued or isn’t available in the desired color and design.

Total Surface Area

Wallpaper can add color, patterns and texture to a room, making it more inviting and comfortable. Accurately estimating how much wallpaper you need to buy helps ensure that you don’t get too much or too little.

First, calculate the total surface area of the walls by multiplying each wall length by the height. Then divide this number by the length of a standard wallpaper roll to find how many rolls you need. Be sure to include the surface areas of doors, windows and vents.

It is important to take your own measurements rather than use a calculator, as these will give you more accuracy. This also allows you to double check your calculations. You can even bring your estimate to a wallpaper retailer and have them double check it for you.

Usable Wallpaper Per Roll

When shopping for wallpaper, it is important to know how much usable paper a single roll will contain. To find out, add the length of all walls and multiply it by the height. The result is the total surface area in square feet (TSF).

To determine the amount of wallpaper needed, divide this number by the pattern repeat. The higher the pattern repeat, the more wallpaper is required to create a seamless appearance.

It is best to be generous when estimating wallpaper requirements. This will allow for a margin of error during installation, and provide extra rolls of wallpaper in case of any damage or mistakes. Also, keep in mind that wallpaper can be trimmed around doors and windows, which will require a small amount of additional material. For this reason, it is a good idea to deduct 15 square feet for each average-sized door or window from the overall room measurement. This will allow for a more accurate calculation of the usable wallpaper required.

Waste Factors

Many online wallpaper retailers offer a calculator that estimates how much wallcovering you need. However, these calculators may not take into account specific pattern repeats or complex wall shapes. It is always best to do your own measurements and calculate how much wallpaper you need to avoid buying too little or having to waste some on trimming and matching.

A good rule of thumb is to subtract the size of any doors and windows from your calculations. This will give you a clearer picture of the total surface area to be covered.

If you are going for a patterned wallpaper then the number of rolls needed will increase significantly as the pattern repeats need to be aligned for a seamless effect. To reduce the number of rolls needed you should consider choosing a free match wallpaper that does not have a pattern repeat or only has a very small one. Free match wallpapers can often be hung in reverse to further reduce the number of rolls required.