"Christian McArdle" wrote in message .net...
How important is it to do the foundations right for a conservatory?

The sides would be wooden. I want to use the room as a dining room, as it is
right next to the kitchen.

The back garden has no access except through the house. It is not possible
to get large pieces of equipment to the rear.

Any building stands or falls according to its foundations. But why are
you considereing a slab for what is only going to be a lean to? Get a
bore hole auger from a toolhire shop. If the ground is suitable they
work fine if not hard luck. Test it and see. What would it cost to
hire one for a day? a few quid.

Now you can pour concrete piles or sink bitumin treated wooden ones.
If you buy them long enough they will make the sides of your dining
room. Put them in a window wide apart or whatever and there you are
-built in the time it takes to lay the concrete.