Jay C. White Cloud wrote:Hi David, et al,
Lime is a wonderful traditional and natural product with a vast array of applications, uses and types (as you are discovering.) If you don't have years of experience working with it, and/or studying its different vernacular forms through history, it can be rather confusing and daunting, especially when you have companies trying to sell things to you (which is agenda driven.) Or the many...let us say "they think they understand?" types on the "boob tube," videos. If a video is "free for the taking," and not part of an educational program backed by a school, nonprofit group, or collective, you can guarantee someone is either "clueless," or trying to sell you a product or service. Be very careful with the "YouTube," culture!
I only had time to try and glance at your post, but see you have different thoughts and questions (as did Jimmy.) I will get around to writing an article here at Permies on "Traditional Lime," but in the mean time, if you could "boil" your question down into:
I can then more efficiently try to answer them and give you reference links where applicable.
1. What's the difference between NHL 5 Lime and slaked lime.
2. Why am I not getting exothermic reaction with NHL5.
3. Can I make Lime Putty with NHL 5?
4. Do I need to make lime putty for limewash/whitewash (is there a difference), or can I just mix it neat and use after a short rest.
6. What mix should use for internal plaster/filler on a plastered wall?
7. Can I use limewash on internal plaster and get a finish that won't be dusty?
And on a totally different note - can I use NHL 5 lime to on soil that is too acidic?
Do you apply the flax oil by adding to a mix, or by sealing afterwards. And will this not colour the finish?
1. Because people talk about 'whitewash' and lime paint almost interchangeably. Most information is about the whitewash as when made from lime putty, whereas I am making mine from NHL 5. Is it not the case that this will be a different chemical composition than the stuff made from lime putty?
2. If it's different which rules still apply. You already said you don't need to let it rest (in fact I discovered you cannot let it rest!). eg Do you still need to apply to damp surface?
3. Still not been able to find a standard mix for whitewash and NHL 5. Any idea's (understand they might not be rules dependent on surface)
4. Theres a lot of talk about crystals forming (which ) I don't seem to be getting? Should I or is it a time thing?
My experience. I mixed a small batch to use/test in my cellar. Maybe It was a little too thick about 1:1 volume with water. I applied that to -
1. Damp render- Took about a day to dry. Reasonable finish
2. Dry render - took less than an hour to dry. Quite a textured finish - quite like it actually.
3. Damp stone - took a few days to dry.
4. Dry stone - took about a day to dry.
Notice I put dry - it does seem to dry (rather than go off)!
I've also painted over old emulsion - and it dried very quickly. Covered really well though. Very textured think it's probably a bit thick, but the thin stuff seemed so translucent I added some more chaux blanc.
What mix would you recommend?
Seems that lime putty and NHL5 are at similar stage of cycle, just one is dried to store, but one is mixed with more water and stays under water. If this is the case, I can't understand why NHL5 can set under water. If you end up with Calcium Carbonate at the end of the day, why will it sometimes be dusty and not others?
explain and define?