In article ,
The Natural Philosopher wrote:
I'd hazard a strong guess that the DG units don't have trickle vents?

Aren't these required by 'law' these days?

SOMETHING is required by building control. It doesn't HAVE to be trickle
vents - they are just one way of achieving it.

But we're talking about replacement windows. Incorporating a trickle vent
is an easy thing to do at that stage. Adding airbricks, etc, isn't.

--
*Why is the man who invests all your money called a broker? *

Dave Plowman London SW
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