"Andy Dingley" wrote in message
...
The concrete floor in my new (but old) workshop used to have baker's
ovens bolted down to it, and they've left holes. In a room 15' x 25',
there's about 6' square to fill, mostly in two large holes around 2"
deep.

So what's my best option for some sort of screed to fill these in?
Buy something (brandnames?) or mix it myself (proportions?)? What's
the best technique for getting a reasonable flat finish afterwards.

The finished surface will have woodworking machinery in there, so the
floor wil see "workshop" use, but I'm not going to be rolling steel-
wheeled engine cranes or such across it all too often. It will be
painted overall afterwards, but I can't afford epoxy.


I also need to trench something in to provide power feeds for a couple
of centrally located machines. Any suggestions on how best to cable
this? Trench with lid, or just bury a pipe with a drawrope and leave a
big open access box at each end?

Thanks for any suggestions


power wash the surface, then hot water & soap ... to get rid of grease etc.

Etch the surface with floor acid (flooring supplies sell it) .... that gives
it a good key ... and then pout over a self leveling polymer screed.

If you follow instructions for self leveling compound (spiked roller etc)
you will have a perfectly flat and hard wearing surface.

I would cut trench using a 9" grinder with diamond blade, concrete in
plastic conduit with draw string.
If trench is shallow, put a steel mesh on top before you pout screed -
protection only