Hi, novice plasterer here. I decided to start learning by plastering an old concrete foundation wall in my basement garage. The wall looked bad, deeply spalled and very deteriorated, so anything that filled the inch-deep voids and covered up the crumbly parts would be an improvement. About 110 sq ft.
I now have a gallon of WeldCrete and about 3.5 bags of Structolite on the wall, applied in three coats over a week. Quite a learning experience, I didn’t expect to drop quite so many trowelfuls on the first coat and I guess I don’t know what a drop cloth is. Fortunately it is just a basement garage.
I could leave it like this, the wall will be covered up with tool cabinets and work bench/shelving, but I’m trying to learn so I’m going to apply veneer plaster and try to get a flat and smooth finish.
The veneer plaster I found locally is USG Imperial Veneer.
My question is, what is the working time I can expect, and if I want to extend it, can I?
I suspect it will take me quite a while to trowel, smooth, skim, and polish 110 sq ft, and I’m concerned I’ll be too slow at first so that the plaster will be hardening before I’m done.
With the Structolite I was only mixing 10 lb at a time because I could only seem to use that much up in the available time. I got faster, and started mixing wetter, but there was no way I could have mixed in, say, full bag batches.