Loft vent letting cold air in

[hugothere]

The loft vent is letting freezing air into the upstairs landing, it can get pretty chilly.
I need to change this vent pictured or adjust it somehow.
If i can identify the brand or version it is I can then do something to stop the cold coming in.
Any ideas folks would be appreciated.

Loft vent

• hugothere
• 24 Dec 2020

Unidentified plastic loft vent louvre vent

 

[Why Not Indeed]

What's at the other end of it? I would assume that the usual flow of air would be from your side, in to the loft, given that warm air rises...but deliberately doing that doesn't make any sense and would lead to unnecessary moisture in your loft space. So there must be more to it than that.

 

[hugothere]

What's at the other end of it? I would assume that the usual flow of air would be from your side, in to the loft, given that warm air rises...but deliberately doing that doesn't make any sense and would lead to unnecessary moisture in your loft space. So there must be more to it than that.

it is cold air coming in from the loft space, through the roof tiles, we have only just moved in, the loft is not very well insulated, it has the usual fibreglass insulation but no membrane between tiles and loft space, so its taking in cold air and pushing it through the vent pictured.

 

[KenGMac]

hugothere, good evening.

If it were me, I would block of this vent, either in the loft or simply fill the vent on the underside.

Is there any sort of "duct" attached to the upper side of this vent in the loft??

As for Insulation up grade, there are some schemes where you can get this done for free?? worth a look??

Up side is that your loft appears to be correctly vented.

Ken

 

[hugothere]

hugothere, good evening.

If it were me, I would block of this vent, either in the loft or simply fill the vent on the underside.

Is there any sort of "duct" attached to the upper side of this vent in the loft??

As for Insulation up grade, there are some schemes where you can get this done for free?? worth a look??

Up side is that your loft appears to be correctly vented.

Ken

Thanks. yes i will probably end up filling it in with something, maybe some polystyrene, its hard to get at from the loft as the fibreglass insulation is so thick and i didn't fancy risking getting my clothes contaminated with it, dangerous stuff, i want to replace it all with a safer product like
the Thermafleece Wool Insulation so i can use the loft for storage, at the moment it looks very inhospitable.
I'm wondering if they would upgrade it to the Thermafleece and put in a membrane in the grant gov schemes?

The weird thing is... the previous owners blocked the other part of the loft off and plastered the access hole so i cant get to it. I think i have two loft areas but cant get to the other one.

 

[foxhole]

You still haven’t mentioned what’s on the other side of vent?

 

[screamer]

sounds like its vented just into the roof space and not externally ducted?

if it was me, i'd remove the vent and repair the hole thats left

 

[foxhole]

sounds like its vented just into the roof space and not externally ducted?

if it was me, i'd remove the vent and repair the hole thats left

You must be psychic.

 

[JohnD]

What colour is the loft insulation?

 

[mattylad]

stuff some socks into it.

 

[catlad]

Looks like a type of envirovent ventilation system to me.

 

[NewHomeOwner93]

The loft vent is letting freezing air into the upstairs landing, it can get pretty chilly.
I need to change this vent pictured or adjust it somehow.
If i can identify the brand or version it is I can then do something to stop the cold coming in.
Any ideas folks would be appreciated.

Loft vent

• hugothere
• 24 Dec 2020

Unidentified plastic loft vent louvre vent

Hello, just came across this post whilst searching for solutions to the same problem you have! We have the exact same vent in the landing and it’s causing quite a chill. Just wondering, what solution did you find for it? Thanks.

 

[RandomGrinch]

Hello, just came across this post whilst searching for solutions to the same problem you have! We have the exact same vent in the landing and it’s causing quite a chill. Just wondering, what solution did you find for it? Thanks.

It's always best to start your own thread, rather than jumping on an old one!

Could you post a photo of your vent?

The OPs vent was one typical of a PIV (positive input ventilation) system, and shouldn't be blocked up.
These systems are installed to reduce condensation and mold problems.
They may let cool air in from the loft, but that coolness should only affect a small area around the vent; the benefit of little condensation, usually outweighs the small amount of extra heating required.
Many of these units also have a small built-in heater that raises the temperature of the incoming air slightly in cooler weather.

 

[freddiemercurystwin]

Start a new thread and answer all the questions the numpty original poster couldn't be bother to answer.