Posts Tagged ‘calculator’

Once Again – Let the Paperhanger Measure Before You Order Wallpaper … It’s Not About Square Feet

September 30, 2021

That unpapered space to the right of the door frame is about 6″ wide. Minus the door frame, it works out to about 2 square feet of wallspace.

Yet, in order to cover this with wallpaper, I need to use a strip that is 28″ wide x 8′ long – that’s about 16 square feet of paper – almost a full single roll.

On-line calculators don’t take this factors into account, nor are store or website employees schooled on these points.

Again, folks – it’s always best to have the paperhanger / installer measure the space and calculate how many rolls are needed, before you order.

It’s not merely about square feet.

Another Example of Why to Purchase Extra Wallpaper – Don’t Trust On-Line Calculators!

August 26, 2021

See that 3 1/2″ wide stripe of bare wall to the left of the strip of wallpaper? In order to cover this with wallpaper, I will need to take a full 9′ high strip of 27″ wide paper – that’s more than 20 square feet – and cut off just 4″ from the one side. The rest of that 9′ long strip of wallpaper will most likely go into the trash bin.

This is a good example of why you can’t calculate how many rolls you need to paper a room by figuring up square footage. You simply are not able to use every square foot of paper on that bolt!

On-line calculators don’t take into account the waste factor from matching the pattern, and the pattern repeat, nor trimming at floor and ceiling, or around objects (windows, doors, cabinets). Or situations like in the photo above, where most of the strip will go to waste.

Again – always best to have the wallpaper hanger measure first and calculate how much paper you need before you buy.

Wallpaper Coverage …. Not What They Lead You To Believe

June 25, 2020

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Photo: Waste from one 2-wall room; all this paper is going into the trash.

For all those folk who think they can figure up how much wallpaper they need without first consulting a professional installer, and they try to calculate based on square footage, along with “calculators” found on vendor websites … Here is a good example of why square footage is NOT an accurate calculator.

Referencing yesterday’s post …. I’m not going to get into a whole lot of math re square footage. Let’s focus on the Strip Count method. Let’s just say that this accent wall required 12.3 strips. Effectively, that is 13 strips.

Due to the 11′ height of the wall and due to the length of the pattern repeat, each 33′ long double roll bolt yielded two strips.

After I used those two strips, I was left with a “tail end” that was about 8′ long. Since my wall height was 11′, here was nothing I could do with a strip 8′ long. So it went to the scrap pile.

The paper was about 2′ wide. 2′ wide x 8′ long = about 16 square feet of waste. Multiply that times the 13 strips it took to cross the wall, and you get 208 square feet of paper that is going right into the trash bin.

That’s roughly equivalent to FOUR DOUBLE ROLL BOLTS of wallpaper. Bought and paid for, but not available to put on your wall.

In real life, measuring is even more complicated than that.

In addition, the photo above shows the waste from today’s install of a 14 single roll breakfast room. The large roll lying on the floor, and the roll behind it, are tightly wound up and are both WAY bigger than the photo makes them appear… A whole lot of paper cut off and thrown away, in order to match the pattern.

So, folks, please let the professional measure, before you order your wallpaper. There are many, many factors to be considered, aside from raw square footage.

More info is available on my page to the right.