Mold or Mould?

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| 2014 Apr 09 |
Mold or Mould?

If you’ve ever done an online search for mold, you’ve probably noticed two different ways to spell it: “mold” and “mould”. In case you were wondering which one is the proper one to use or if there are differences between mold and mould in terms of fungus itself, today is the day when the mystery will be resolved. So, which one is it – mold or mould? Let’s find out!


Mold or Mould - Mold Busters
There is more than one way to spell mold. Mold Busters explains how to choose between “mold” or “mould”, so you can confidently discuss the topic from now on.

American versus British English

First of all, we want you to feel comfortable and confident when you discuss mold, be it verbally or in writing. After all, the key to prevention is awareness and we encourage you to spread the word on mold (or mould).

Second, here is the truth. It is both mold and mould. (Say what?)

Both ways to spell it are correct. The spelling you use essentially depends on where you live. If you live in England, the proper spelling is “mould”. If you reside in the United States, omitting the “u” and using “mold” is more common.

We can see similar “problems” in words such as color (colour), honor (honour), meter (metre), etc. In other words, there are differences between British English and US English, and sadly (or luckily, we are still not sure), spelling of mold is among one of those differences..

Mold Busters are located in Canada, and it’s not as clear which spelling is more appropriate and present here in Canada, as Canadian English is influenced by both the US and England. At the moment, it’s actually perfectly acceptable to use both “mold” and “mould” in Canada. How cool is that?

Of course, you’ll notice that some Canadian institutions or companies will spell it one way and others will spell it the other in the media and other reports. For instance, Health Canada uses “mould” whereas we use “mold”.

Choosing either “mold” or “mould” may also depend on your preference or someone else’s. Double check with your employer (or anyone you’re writing for) for his or her preference or existing company policy when it comes to spelling.

Mold Busters: why we use “mold”

We’ve gone back and forth, spelling it both ways in the past. However, within the last year or so we’ve stuck to using only “mold”. Why is that?

Well, since Canada doesn’t have strict rules about using either U.S. English or British English, and since we are closer to the U.S. border than to the United Kingdom, it was natural for us to opt for the “mold” version. Of course, some of our clients are from the U.S. and it was just natural to use “mold” when speaking with them. So it remained like that in our written communication, too.

Ultimately, both forms of spelling are fine in Canada—just be consistent within your document. Using either “mold” or “mould” rather than mixing both will help keep your document reader-friendly and improve its overall appearance.

Learn more about this topic by checking out our video below. And remember, spelling is a small concern compared to the real, adverse effects of mold, so please take advantage of all our educational resources today.

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