In case you haven't guessed by now, I seem to have this thing for chalk paint. First of all allow me to write a disclaimer: The name "Chalk Paint" is register to Annie Sloan and is sold exclusively by distributors in boutique stores. It can't be found at your local Home Depot, Ace Hardware, or Lowes. There are a few other chalk-style or furniture paints out there, some of which you can find at the aforementioned stores, but Annie Sloan seems to be the original and probably the best. I use the term chalk paint but I should probably call it chalk-style paint. Don't want to get sued!
I think chalk paint is the bomb! I mentioned before that used it for the first time when I did a piece for my daughter's wedding reception. Chalk-style paint amazing to work with . It's quick and easy to use - no sanding or stripping and only minor prepping is needed. It dries fast, and is easy to sand and distress. I can go from start to finish with a small piece - a table or a chair - in less than an hour.
Chalk-style paint creates a soft, antique-looking finish that is very popular. It's easy to get a nice, "shabby to chic" vintage look. Chalk paint loves to be waxed. The wax is the other half of the magic - more on that later.
Annie Sloan paint is very good, but also very expensive. A quart is around $40, which comes out to $120 a gallon. To be fair, it goes on smooth and can be stretched for days - you can paint a few pieces with a quart, but it is expensive. Annie Sloan also sells furniture wax, both clear and dark, which is also a bit pricey.
So once I got into using chalk paint I started wondering about alternatives to Annie Sloan. I am on a budget and if I'm going to paint everything in sight - I keep finding new prospects around my house - I need to figure out something less expensive. Thankfully there are more than enough suggestions online for mixing your own paint.
Thee seems to be four basic ingredients that can be used for mixing chalk-style paint. Three are more common and easy to come by, and for the most part work ok, and the fourth is a little harder to come by but seems to the best. The three common ingredients are Plaster of Paris, Baking Soda, and Un-sanded grout. They all seem to work well (going on what I've read online, not on my own experience - when I have time I would like to see for myself), but all have some drawbacks. They either don't finish as smoothly, apply as well, or tend to set up too fast.
The third ingredient, and the one I'm now using, is Calcium Carbonate, or Cal Carb for short. Cal Carb is actually what chalk is made of and is also what Tums are made of and can be used as a calcium supplement (you can mix it with water and drink it). Food-grade calcium carbonate can be purchased in health food stores but it is more expensive. Cal Carb is crushed limestone and is what gives chalk paint is magic powers. It makes the paint stick - the no sanding or stripping part, and also makes it smooth and sandable - the chalky part.
Here are the not-so-secret recipes for homemade chalk-style paint. I have a theory about this - that basically ALL commercially available chalk-style paints or chalk paint mixes are Cal Carb based, with maybe a few extra ingredients thrown in. Kind of like how all fry sauces are basically the same thing.
I searched on Amazon.com and settled on a 10-lb bag of calcium carbonate, aka. limestone, sold by Raw Supply. There was even a recipe for chalk paint on the back, which suggests that I'm not the first person to make the connection. A ten pound bag cost about $15, and according to the recipe on the back, will make about seventy gallons of paint! I did some quick math:
A gallon of flat, interior, latex paint averages $20/gal, give or take
Cal Carb powder adds about $0.21 per gallon of paint.
That's roughly $20.25 for a gallon for homemade chalk paint compared to $140 gallon for Annie Sloan.
(It will probably take me 10 years to use 10lbs of Cal Carb chalk mix.)
. . . oh and by the way,
70gal of Annie Sloan Chalk Paint would cost $9800.00!
I like that math a lot.
As far as I can tell the homemade Cal Carb based paint and the Annie Sloan Paint are super close. I may have to do a side-by-side comparison to be sure. But even if the AS paint is superior, which I'm sure it is, I don't think it's by much. And unless you are Mrs. Bill Gates (I don't think Bill paints his own furniture - but maybe he does), mixing your own paint makes a lot of sense financially. I don't think I will be using much more AS paint in the future . . . nothing personal Ms. Sloan.
UPDATE: So I've been using the calcium carbonate for the past few months and I am pretty convinced that this is the way to go. I really can't tell much of a difference between the home-made chalk paint and Annie Sloan.