On Sunday, February 16, 2020 at 1:32:15 PM UTC, T i m wrote:
On Sun, 16 Feb 2020 12:46:06 +0000, (Roger Hayter)
wrote:

We replace a draughty sash window with a modern sealed DG one and are
then forced to have a permanently open 'trickle vent' to replace the
draught the old windows provided in the first place! ;-)

We live in an EOT Victorian cottage with solid brick walls and don't
have central heating as there seems little point heating up large
flank walls that are exposed to the outside world.

Our TD is a vented one and oil filled rads keep the rooms we are using
at a comfortable temperature (some of it on E7).

Plus the Mrs goes up and down in temperature all the time so a
'warmish' room and her having the option of putting a cardi on works
for us. ;-)

And given the global warming I can't see the point of fitting CH now
but might extend the Aircon for the summer. ;-)

Cheers, T i m

Seriously though, we now often live in near hermetically sealed homes
and you see people drying clothes indoors and on radiators complaining
about the (subsequent) condensation and mould

In my own defence if I may, I do not dry washing indoors. I have a condensing dryer but I even had that moved out of the kitchen ( together with the freezer ) to an outhouse at much inconvenience but it did not good.

I moved them back when I realised it was not the machinery but just that the house had become so bubble wrapped it was not moving any air. I cut my washing down to once a week and use of the cooker to twice a week before getting a dehumidifier for the times I had the cooker or washer running.

But still we had a problem. Short of not breathing nothing was stoppin g the condensation and mould until we got the PIV.

You are correct though, modern living with its over insulated houses is to blame. If I had my time over I would have left the old wooden single glazed windows in place and not had the roof insulation. I called a halt at cavity wall insulation because we were already in black mould country before then.