Trickle Vent in Bathroom Window?

B

BarneyMc

Registered User
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I'm replacing a single pane bathroom window and getting a double glazed one in. The supplier is asking me if I want a large, small or any trickle vent.

I usually open my existing window after taking a shower and leave it open during the day for a few hours so I don't think I really need a trickle vent.

I'm just concerned that I'll not get the full benefit of my new double glazed window if I go ahead with a trickle vent. On the other hand I realise it is a very handy way of allowing fresh air into the bathroom whilst still keeping the window shut. But then should I not just keep my old single pane window??? Confused!!
 
Mould will build up very quickly in a bathroom that does not have a very good flow of air through it,a trickle vent would not be enough of a flow.
 
I don't think a trickle vent does a lot, you seem to be doing well on your own ie. opening the window regularly. I wouldnt really bother with one in this case.
 
sparkeee said:
Mould will build up very quickly in a bathroom that does not have a very good flow of air through it,a trickle vent would not be enough of a flow.
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I open the window each day and for 15 mins after I shower.

I can see the advantage as it is a good way of being able to vent the room even when not at home.

The downside I see is that even whe shut they will leak air. Why go to the trouble of buying a good airtight, well insulated window if the trickle vent will leak air even when closed?
 
No I'd keep doing as you are doing, get the double glazed window with no vent and continue to open after the shower.
 
A trickle vent would be a waste of time. Either extraction fan or open window as soon as you're decent.
 
Leaving the window open for several hours a day, especially in winter, negates the value of having DG windows.

Personally I prefer to have a trickle vent, any leakage when closed is pretty minimal.
 
But you need to change the air in the room, I always leave my windows open for a while, closing them before the real cold air outside sets in - before dark of course.

If you don't air a room, especially after a shower, damp and mould will send in pretty quick. I just think trickle vents are a waste of time as long as you're in the good habit of opening your windows.
 
eamonn123456 said:
Leaving the window open for several hours a day, especially in winter, negates the value of having DG windows.
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I can close the window to the level where it lets in the same air as a trickle vent then. I also have the option of closing fully and having no leak of air through the trickle vent.

eamonn123456 said:
Personally I prefer to have a trickle vent, any leakage when closed is pretty minimal.
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Why bother spending on a good double glazed window then if it's going to leak air when closed?
 
Makes sense.

Mind you, leaving the window 'cracked' open is probably letting out a lot more hear than a trickle vent would (but also letting out more steam I suppose).
Could be considered a security risk as compared with a trickle vent.

I think the leakage from a good quality closed trickle vent is fairly insignificant, unless the rest of your house is properly airtight.

Its something I don't think there is a simple answer to.

The main point I was trying to make is that leaving a bathroom window open for hours on end is going to leak a lot of heat from your house, and IMO is overkill in terms of removing steam from the bathroom.
 
eamonn123456 said:
Makes sense.

Mind you, leaving the window 'cracked' open is probably letting out a lot more hear than a trickle vent would (but also letting out more steam I suppose).
Could be considered a security risk as compared with a trickle vent.
Click to expand...

Yes the advantage of a trickle vent is that it lets the minimal of air through and you can have the main window closed so it's great when heading away for a few days.

eamonn123456 said:
The main point I was trying to make is that leaving a bathroom window open for hours on end is going to leak a lot of heat from your house, and IMO is overkill in terms of removing steam from the bathroom.
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Leaving the window open for hours on end is a personal thing and can be done with or without a trickle vent so it's not really an issue. To remove steam I leave the window open for about 5 mins but have to do this as i have no extractor fan - again this will be the same if I do or don't have a trickle vent. A trickle vent IMO will not remove steam from a bathroom quickly enough.
 
Another angle I've just thought about this is how it will impact my BER rating? As the bathroom doesn't have any ventilation (other than manually opening the window), if I don't install a window trickle vent will this have a negative impact on my BER rating?
 
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