Chalk Paint - seizing up!
Has anyone encountered the problem of their DIY chalk paint seizing up? I have been making my own chalk paint for 2 years, using unsanded grout and various paint sources. I have never had a problem with it but the last 5 batches I have made seized up (the last 2 seemed to do so right in front of my eyes) and became unusable! So frustrating. There were few variables to contend with since I have made CP in winter, summer and relative humidity, all with no problem; and I tried to thin the last batch with more water (used originally to mix the grout up before adding the paint) but to no avail. The consistency turns to mud. I am going to switch to plaster of paris as a Plan B but I am mystified as to what might be going on. Could it be the PAINT? I've used Glidden, Valspar, Benjamin Moore, etc..., and others without a hitch, and have recently been using a lot of Sherwin Williams over the last 6 months. Today I went to Home Depot and got a new container of grout thinking that might help - nope. And a brand new gallon of SW paint purchased this past Saturday - yuk - no luck + what a huge lump of a mess. Anyone have any ideas?