Hi Folks,
About 3 weeks ago I first aired my concerns here regarding the choice
of heating for
my new conservatory.
I've had more thoughts, and whilst not wishing to try the patience of
the kind folks
here, it's worth my while to see what others think of these new ideas.

Some years ago I refurbished a small bathroom (9 feet by 4 feet floor
area) and
renewed the chipboard floor at the same time.
Before fixing the new flooring, I strapped the sides of the joists with
small supporting timber
to hold the solid polystyrene insulation blocks I planned on using
below the floor.
Since one long end of the bathroom adjoined the eaves, I cut some
lengths of 8mm or
10mm microbore and made U shaped loops (about 5 feet tall) and laid
these one per
polystyrene board on top of the board.
The poly boards were fitted flush with the top of the joists. Add a
10mm microbore pipe and
then screw down the chipboard and the "crush" keeps the microbore in
touch with the
chipboard.
I connected a manifold in the eaves to the heating circuit (come
Autumn) and waited to
see if the family noticed the "underfloor heating".
Though not roasting, the heating effect is pretty good at taking the
chill off the tiles in the
winter.

So, you can probably now guess where I am going with this...

The present thought is to install wall radiators in the conservatory
plumbed via a
zone valve to the central heating system.
The zone valve being timer operated via one of those immersion-heater
timer devices
that have a maximum delay of a few hours.

At the same time, install my proprietary underfloor heating but plumb
this permanently
off the central heating system.

Thus under normal circumstances the underfloor heating ought to keep
the conservatory
comfortably above freezing, but when you need it you can kick into life
the wall
radiators.

Any thoughts on my scheme ?

Thanks in advance

Mungo