How to calculate the amount of wallpaper needed?

Putting up wallpaper can make any room look cool and unique. But figuring out how much wallpaper you need can be tricky. At Wall Mastery in Florida, we’ve got it down to a science. Here’s an easy guide to help you calculate the right amount of wallpaper for your project.

Step 1: Measure Your Walls
First, you need to measure your walls. Here’s how:

1. Measure the Height and Width:

• Use a tape measure to find the height of the wall from the floor to the ceiling.
• Measure the width of each wall from one corner to the other.
• If your room has walls of different heights, measure each one separately.

2.  Calculate the Total Area:

• Multiply the height by the width of each wall to get the area in square feet.
• Add up the areas of all the walls to get the total space you need to cover.
• For example, if you have four walls and each one is 8 feet high and 10 feet wide, the math looks like this:

8ft (height) × 10ft (width) = 80sq ft
80sq ft × 4 walls = 320sq ft total
Step 2: Subtract Doors and Windows
Next, you need to subtract the areas of doors and windows so you don’t buy too much wallpaper.

1. Measure the Doors and Windows:

• Measure the height and width of each door and window.
• Multiply the height by the width to get the area of each one.

       2. Subtract from the Total Area:

• Add up the areas of all the doors and windows.
• Subtract this number from your total wall area.

For example, if you have a door that is 7 feet by 3 feet and a window that is 4 feet by 3 feet, here’s how it looks:

7ft × 3ft = 21 sq ft (door)
4ft × 3ft = 12sq ft (window)
21sq ft + 12sq ft = 33sq ft
21sq ft+12sq ft=33sq ft

Subtract this from the total wall area:

320sq ft − 33sq ft = 287sq ft
320sq ft−33sq ft=287sq ft

Step 3: Figure Out How Many Rolls of Wallpaper You Need
Wallpaper rolls cover different amounts of space, usually around 30-33 square feet.

1. Check the Roll Coverage:

• Look at the label on the wallpaper roll to see how much area it covers.

       2. Divide the Adjusted Total by the Roll Coverage:

• Divide your total wall area by the coverage of one roll.
• Round up to make sure you have enough wallpaper.

For example, if one roll covers 32 square feet:

287sq ft (total area) ÷ 32sq ft (per roll) = 8.97 rolls
You should round up to 9 rolls to be safe.

Step 4: Think About Pattern Matching
If your wallpaper has a pattern, you’ll need a bit more to make sure the pattern matches up correctly at the seams.

1. Check the Pattern Repeat:

• Look for the repeat length on the wallpaper label. Common repeats are 10, 21, and 25 inches.

       2. Adjust for Pattern Matching:

• Add an extra roll to be safe.

For example, with a 21-inch pattern repeat, you should add one more roll:

9 rolls + 1 extra roll = 10 rolls

Step 5: Buy Extra for Mistakes and Repairs
Always get an extra roll or two. This way, if you make a mistake or need to do repairs later, you’ll have extra wallpaper on hand.

Step 6: Use a Wallpaper Roll Calculator
For a quick estimate, you can use an online wallpaper calculator. Just enter your wall dimensions, door and window measurements, and pattern repeat. Wall Mastery’s website has a handy calculator you can use.

Tips from Wall Mastery

• Double-Check Measurements: Make sure your measurements are accurate.
• Consider Professional Help: If you’re unsure, hire professionals like Wall Mastery for a perfect finish.
• Order Samples: Before buying a lot of wallpaper, get samples to see how they look in your room.
• Store Extra Rolls Properly: Keep leftover rolls in a cool, dry place.

Conclusion
Calculating how much wallpaper you need can be a bit tricky, but if you follow these steps, you’ll get it right. At Wall Mastery, we’re here to help you make your rooms look amazing with our expert tips and professional installation services. Contact us today to start your wallpaper project!