"Dave P" wrote in message
...
I've a 4ft by 4ft windo that I am planning to use to make a cold frame. I
intend to concrete the floor then on this lay bricks to a height of 15cm
at
the front and 55cm at the back giving a slope on the window (roof).

Does this sound adequate for height, we are new gardners and builders and
see it being used for seedlings to go on into the veg plot. Would a deeper
cold frame be an advantage for other plants?

On the building side would I need to add plastiser to the mortar and use a
DPC?


I can't see any merit in incorporating a dpc into the design, unless the
frame is to be butted up to the house wall above the house dpc level, in
which case you should incorporate a vertical dpc into the design, at the
joint with the house, to prevent damp bridging the dpc.

Personally, I wouldn't bother too much about plasticiser in the mortar for
this use, either, you're not building a house :-)