Air Vents in Home

Micky8728

My house is located on top of a hill so its always exposed to high winds. In every room in our house there is an air vent. In our sitting room the vent cant be closed at all. Can always find a breeze on your head like there is a window open. Very had to heat the room. Can sometimes even find a breeze coming up behind the sqirting board. I have taking the vent cover of in the inside and noticed there is no duct between the inner and outer vent and the cold air is getting into the cavity in the wall.. Its a wooden frame house.. Any tips on what i could do to help with this? I did cover up the vent half ways with cling film to block some the the rush of air coming in but its not a long term solution..

Lumen

Your problem is not the wall vent, it's the lack of air tightness of the building fabric as evidenced by the draught from the skirting.

If you blow into a bottle you don't get a breeze inside. Air needs to go somewhere for there to be a draught.

steamsey

I defer to others who I'm sure know a lot more about this than me but just posting my own experience.

Had vents same as yours. Very draughty. No ducting. Cold air was getting blasted into and along the walls and obviously some directly into the rooms. Walls were very cold. Rooms hard to heat. Wasn't sure what to do so went with DIY approach.

Put ducting (expanding foam all around) into every vent. Put adjustable vent covers on inside. On outside put these black circular air vents that baffle the wind. Massive difference. Air flow is just into the room from outside. Not much air coming in through vent and into the walls - the air has been directed straight into the vent now and the house is much warmer and keeps the heat (have maybe 80mm internal insulation). Regardless of building regs, I close the vents in tv room for example when no one is using it. No mould issues etc.

Relatively cheap job, did it myself and only average at DIY. No special tools needed.

my3cents

If this is a timber building is there a wooden floor and an air space underneath it? If so you at least need a cowl on the front of any below floor vents but don't block them as the floor will rot.

Calahonda52

Micky8728 wrote: »

My house is located on top of a hill so its always exposed to high winds. In every room in our house there is an air vent. In our sitting room the vent cant be closed at all. Can always find a breeze on your head like there is a window open. Very had to heat the room. Can sometimes even find a breeze coming up behind the sqirting board. I have taking the vent cover of in the inside and noticed there is no duct between the inner and outer vent and the cold air is getting into the cavity in the wall.. Its a wooden frame house.. Any tips on what i could do to help with this? I did cover up the vent half ways with cling film to block some the the rush of air coming in but its not a long term solution..

Can you post a picture of the hole with the inside cover off please?