To err is human....... must have been your post about the poor standards in house construction 🤭
My point was, that it is the poor ‘leaky’ house construction which helps which helps with the condensation.
In our home we have an extractor running 24/7 365 days a year and this helps to remove moisture content from the home. TBH I thought it was standard in all homes as air bricks have been removed.
Absolutely not, air bricks were fitted either to vent a cavity, or a room or under a suspended floor. For the first two reasons they have not been used by anyone with a modicum of building knowledge for about 50 plus years!
Pushing air out with a fan is wasteful and expensive in heating. But it will help with condensation. Modern thinking is air tight with better insulation.
We have been thinking of putting a new system in it called Loft PIV mounted unit it a ventilation system and condensation control unit for homes with loft space and next door done it and it has worked . our condenser tumble dryer is in the garage and we use it alot in the winter months
I have heard of this. Sounds promising, but I have no info.
Ours is in the passage way so services all the rooms off the passage. There is the two of us, 3 dogs and 2 cats all exhaling water vapour so it adds up over the night. During the day there is the washing up plus other things that would generate moisture into the air. We are lucky that we have loft space.
Strangely for the first two years that we had it, it never worked although it was switched on. Eventually a repair person opened up the switch to discover that it had been put in upside down. Put it the correct way up and no more issues with condensation.
Also we have a wet room that has an extractor that removes a lot of moisture in the mornings and evenings when showering etc.
But is yours just a fan as you mentioned earlier? The PIV is much more involved. Mounting a fan just to extract into the loft space will only move the condensation and could lead to structural failure of the roof! PIV work the oposite to an extractor, pushing fresh filtered air in.
Building regs state that bathrooms and toilets must have some form of ventilation. This means a window which can be opened, or mechanical ventilation. An extractor fan.
These fans are normally fitted in rooms without daylight and work off the light switch with an adjustable overrun.
My bathroom does have a window, but there is also an overrun fan above the shower. This is only set to run for 1 minute which is enough to control the ventilation. I have another in the downstairs loo and on the hob extractor. All are fitted with air valves to prevent cold air returning.
John