![]() ![]() It's gone through a double hydrating process too, so it's not much different to Portland cement. It's in the dolomitic lime category, with a bunch of other crap in as well, and is an inferior product. This is not what you want if you can possibly help it. Here they are listed in order CL 90 being the purest and highest quality.ĭolomitic Limes (The stuff you don't want if you can help it)įolks in the US are often pointed towards S-type hydrated lime. That would be way too easy:) There are varying qualities of hydrated lime too. There is one big drawback with bagged hydrated lime though: Unlike slaked lime or lime putty, powdered hydrated lime doesn't improve with age. Someone will no doubt quibble with this, but I’ve taken the majority vote on it. So, if you can't get your hands on the putty, hydrated lime powder is generally considered to be a good second best for lime wash or render. Here the lime has gone through a special process to get it into powder form. But you can also buy hydrated lime as a bagged powder. So.Which kind of lime do you need and why? And how can you possibly tell which is which?Īs mentioned before, when you slake quicklime, you get hydrated lime (aka calcium hydroxide) which is a soft creamy putty. The point here is to empower people to choose/identify an appropriate lime, explain simply why, and not to kill their confidence or confuse them to the point of paralysis. But before you race to the comments section (which you are welcome to), do bear in mind, this is a post for beginners not a detailed chemistry manual. And plenty of non-experts dying to make some noise and confuse everyone too. Now, I know there are plenty of experts out there just itching to add their increment to the lime knowledge tower. I've also had a good long dig around in the jumbled quarry of the white wonder to clarify for those of us without a chemistry PhD what exactly is going on. You take what you can find and make the best of it.Ī decade down the line I’m on a different mountain, one which is situated in more lime-specific Europe where I've used pretty much every kind of lime I could find. That happens when you live on a mountain without a car on the edge of the Middle East. I’ve used plenty of different kinds of lime, and when I started this gig frankly I had no idea what they were. ![]()
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