Glass Cleaning 101

Humans have been making glass for 3500 years, with the earliest known examples found in Egypt dating from about 1350 BC. Smeared and cloudy glasses would not have been too much of a problem for them because it was the Romans who pioneered the creation of transparent glass so they could show off the colour of their wine.

If the Romans could manage having lovely clear glasses to drink from, then there’s no reason that Canadians shouldn’t be able to as well. Wouldn’t it be fantastic if someone would put together a fool-proof guide to looking after your glassware?

Well luckily, that’s exactly what we’ve done.


We’ll start with using your glasses. You won’t need too much help here, but remember that the irregular structure of glass is what makes it clear. The same fact also makes it extremely susceptible to something called “thermal shock.” This may sound like a terrible late night action movie, but it is in fact the term for when the glass changes temperature too rapidly and tries to expand or contract unevenly – causing it to crack. So, remember not to use your glasses for boiling or very hot liquids, unless the manufacturer specifically says you can. If your glasses chip or crack then it’s the end of the line for them, and we recommend that you don’t keep using them. Not only can very small glass fragments get into your drink (and more importantly, you) but these cracks harbor bacteria and germs that are very difficult to get rid of, even in a dishwasher.


When you put your glasses in the dishwasher, load them onto the top rack, away from any other dishes. To fit taller glasses, or glasses that have a stem, you may have to lower the rack to make space. Also, make sure they’re not touching each other, as this could cause them to crack as they knock together. To get the best results during the washing phase, use Finish® Jet-Dry Rinse Aid. This will help avoid watermarks appearing on your glasses, as well as preventing extra washing and wiping after your dishwashing cycle has finished.


When it comes to storing glasses there are two methods: rim up or rim down. Having the glass rest on its rim avoids dust and other nasties settling in the glass, but having it stand on its base means the part that you drink from doesn’t get contaminated by the bottom of a cupboard, and runs less risk of getting chipped.

What we would suggest is using a thin, clean cloth to line the bottom of a cupboard before placing the glasses rim down on to it. This prevents any dirt or damage from getting to the glass’s rim, but also doesn’t leave a space for dirt and dust to settle. It may be space intensive, but avoid stacking glasses if you can, as this can create chips, scratches or even a vacuum, preventing them from being pulled apart.

So there you have it, just a few simple things to keep in mind when looking after your glasses to ensure that they stay looking fit for an emperor.