I've learned to my cost in the past that old unused plaster, even though it still looks powdery, is useless and costs a lot of wasted time.
But how can I tell if plaster I bought a while ago and stored in a shed is still any good: is there a simple test?
The same question applies to cement. Clearly, if the bag's gone rock hard, it's beyond use, but what about the earlier stages when there are pea-sized lumps?
I'm trying to discipline myself to buy only what I need for small jobs, but I still waste quite a lot.
But how can I tell if plaster I bought a while ago and stored in a shed is still any good: is there a simple test?
The same question applies to cement. Clearly, if the bag's gone rock hard, it's beyond use, but what about the earlier stages when there are pea-sized lumps?
I'm trying to discipline myself to buy only what I need for small jobs, but I still waste quite a lot.