Tea is good. Shall make myself a mug.
I have had a re look at my weather data and the conditions when condensation can happen are very low, think it was less that 600 minutes for the year. This is obviously affected by internal RH levels, not having any data on that makes a risk assessment a bit tricky. Anyone got any idea how much higher they are than outside levels?

It was ways to minimise , that i was looking for.

Simple ways

Hi,

For the toilet seat thing is a must for hygiene – flush the loo and you can’t resist looking down the bowl YES - you are breathing atomised XXXX and it’ll settle on your tooth brush in about 2 mins.
If I had the opportunity to redesign bathrooms at home (despite having done this) I would separate the loo and bathing areas with a door that could be open or closed between them so they could operate separately or as one. I don’t know where the modern fashion for in one room originated from – any ideas. Apart from hygiene if you could do this it would prevent the inevitable condensation drips from the cold cistern. The built in flush units do help here and that’s something I did do.

I think volume is important as well, I have a much greater volume than before overhauling my house and I do get less condensation. We’re very good at not drying indoors or cooking with steaming open pans (probably bad at lots of other things) but because of increased volume from wide open spaces we don’t seem to get any condensation. Admittedly the moisture is still there but spread around more.

I’ve seen it here about offing the kettle before it reaches a full on boil. I’d think the 5-10 seconds of full pelt boil must contribute to moisture in the room as its over and above what’s needed for a hot drink – so hit the button and 95ish.

Cheers

Mike up North

Pressure cookers combined with instant cooking temperature control to minimise steam and energy usage. Alternatively eat a hot meal once per day in a collective canteen.

Looking to the future I wondered if there will be alternatives to the bath/shower. For example it is common to find families who never wash the hair of their children because they say it gets rid of natural oils in the hair. Not sure if there will ever be a futurist replacement for the shower that uses far less hot water - maybe NASA has a few tips.

Seventy-five quid for a kettle!

Mind you, it is on offer with a saving of 29p.

James a glass of water will not add to a condensation problem, the surface area of the water is too small compared to the problem.

MHRV will sort all problems

Built in wardrobes often get condensation in the back of them.

I have just been out doing some digging in the garden and now looking through the glass in the back door. This is the only one in the house that is not doubled glazed now. As I worked up a good sweat and it is raining out there I notice that the condensation on the pane is only about half way up. Outside temp is 10C inside is 22C. My very cheap RH gauge has topped out at 70% (in the few minutes it has taken me to write this it has dropped to 45%), so I assume it is over this.
As RH is probably even in the room the condensation level is probably caused by the temperature gradient (hot air rises). So evening out the temperature may reduce the temperature gradient over the pain of glass and reduce the condensation. So fans that distribute the air may be a solution.

This has also got me thinking about condensation risk when adding internal insulation. Glass is not very good at insulating and could be considered to be equivalent to the external few millimetres of a solid wall. If the temperature and the RH were at the level where condensation is a risk, it would only affect those few millimetres (there would almost certainly be some capillary action making the moisture move inward a bit). But as the external wall is also the one that has the greatest temperature variance this moisture would would also be changed back to vapour fairly fast as the day warms up.
Wrong thread I know to discus this but thought I would just mention it as to reduce condensation don't do any physical work at all

One example , recently just by closing the bathroom door when bathing , my brother found he reduced a longterm damp/condensation problem in a corner in the bedroom opposite.
Tumble dryer, dehumidifiers all energy hungry solutions

Posted By: jamesingramHouse plants do they have a positve/negative influence ?

Excellent list. Well done! I agree with Paul about the temperature.

Plants increase moisture in the atmosphere because they transpire it through their leaves (the water helps keep them stiff apart from other things, which is why they wilt when they don't have enough).

I recently read a paper that estimated in detail how much water is produced by all these sources, I'll see if I can dig out its details.

Ha Ha HAAAA: up to 50%! reminds me of an American U2 pilot who used to freak out air traffic control by requesting permission to DECENT to 65,000 ft. Can't comment properly now but as for crystals - they only work in confined spaces like cupboards; I have tried all solutions like that.

Horses sweat

45% from showers, 35% from drying clothes, 13% from cooking, 7% from breathing/sweating.

Hi ST, they are just average figures that I got from a Dutch HRV manufacturer, they vary a lot depending on whether you dry your clothes in the house or not and whether you open a window after a shower. The fact that we "Pee" actually stops a lot of moisture going into the air, otherwise, as FT said, our lady friends would be constantly "glowing"

I mentioned it above but got no reply (probably as everyone was laughing themselves silly at my fashion conscious silly priced kettle) but "I was thinking that there might actually be a use for those nanoparticle paint/paint additives on interior wall prone to condensation." Can anyone comment please.