White silicone sealant - anti mould.

Can you not open the window while you shower? Even opening in a nearby room will help.

Silicone is one of those things where it pays to not just buy the cheapest stuff. If your mould is that bad I'd go for the Unibond anti-mould sealant which worked well for me previously.

If you cant improve ventilation you need to improve heat. Surely it has a ceiling into a loft space that can take an extractor fan?

Dry the shower afterwards with something suitable, I use an Ecozone Bathroom microfibre cloth.

Take all damp towels and cloths out of the shower area, until needed again.

Ventilate as much as possible, use a portable fan to push fresh air into the shower room.

I've yet to find any silicone sealant which doesn't eventually get mould. The more expensive ones might be more resistant to mould than the cheap ones, but they all get black mould marks in the end. They're like those "frost resistant" flowerpots - a meaningless term which simply means that they *will* get cracked by frost at some time.

Loft space is a room - my workroom. Venting to outside from the bathroom is very difficult - the only outside bit is directly above (or below) a window and the wall is very thick granite.

The bathroom is in the wrong place basically, they converted the wrong bedroom IMO, but this is supposed to be 'temporary' accommodation till something a bit bigger comes along. We sold up and downsized to get a 'foot in the door' locally, but nothing suitable yet in two years.

While too small (still not unpacked quite a bit of stuff), it's actually very peaceful and pleasant here, which does raise the bar for our eventual move.

The bathroom's not so damp as to get mould other than in the shower, and it's not a big deal to clean it every couple of weeks, I just wonder if it's worth changing the sealant.

Hmmm. Extractor fan into the toilet soil pipe? What could possibly go wrong?

Ah. That's hard then

Mmm. You can get fans mounted *in* a window. Not a trivial exercise though If you have a small pane that could lose the glass and acquire a bit of 'wall'. Or lose the whole window? I've got a windowless toilet/shower..

I feel for you.

Doesn't it just?

I doint think so.

What will probably work is use of an antifungal shower cleaner after every shower and leave the door open in between

You could go through that granite wall perhaps.

That is the logical way. Usually granite walls have a loosish infill and with the right tool it is a feasible option.

If the vent ends up above the roof then I can't see anything wrong with this, apart from perhaps a regulation or 2?

When the fan stops your bathroom might get a bit smelly...

All silicone in baths/showers moulders, just a question of when. The solution is to apply neat bleach last thing at night, don't rinse it off. It takes several applications to have it looking new again.

Mine never has and has been there for 50 years now, with the shower used atleast once a day, more often in the hottest weather.

Although what I have now is only around 5 years old after a bathroom refit the previous silicone around the bath and shower was about 30 years old with no sign of mould.

Put a dehumidifier on caster wheels in the bathroom connected to a socket outside the bathroom and turn it on after you have created a lot of steam.

Also handy for drying wet clothes during inclement weather.

Get into the habit of squeegeeing down the surfaces where condensation has collected immediately after use.