DIYbanter - View Single Post

wrote in
:

Cement will absorb moisture from the air and will hydrate (set) in the
bag, often this will be seen as solid lumps but it can remain as a
powder but will be a lot less reactive than new cement which is why it
can take a long time to set and be fairly weak.

Got to be what's happened - they could have warned me

I would get a new bag if its at all critical and I would count not losing
face in front of your neighbour as being critical

Absolutely - he knows I can electrify and plumb (thanks to free tuition
here); I can't have a newly-bodged post fall over in 20 mmins ;o)

mike