Closing an Air Vent

[rtcosic]

Our new place has provision for a woodburning stove (Yes, really in a 2021 build!).

Obviously, we have no intention of installing one or any other kind of solid fuel appliance in the foreseeable future. A balanced flue 'hole in the wall' type gas fire might be on the cards in the future unless I can keep up the procrastination effort indefinitely.


Closing off the chimney is easy - Chimney Sheep.

Closing off the vent, I thought of the following reversible option:

Remove internal grill.
Place square of heavy duty plastic over the inside of the external air brick
Make a cardboard rectangular tube to go through the cavity.
Inject expanding foam
Stand well back whilst it does its stuff
Trim the excess flush.

This will be behind furniture so doesn't need skimming to match the wall, but I suppose I trim the foam, add a square of plasterboard, skim and paint if I were feeling enthusiastic.

Does anyone see a problem with this bodge?
Any specific type or brand of expanding foam to choose - or avoid? Otherwise, it's Screwstation's cheapest.

 

[Fastdruid]

On the assumption it's a standard cavity wall that isn't then filled with insulation and your vent isn't ducted (ie venting into the cavity and then into the house) I would personally leave the external air brick and just block the internal vent.

 

[Bravheart]

The room needs to breath somehow

 

[Afterimage]

Hit and miss vent would give you more ventilation options than just sealing it up.

 

[Barking Mat]

If I've understood your question.

Stick a mushroom vent on it. Like for septic tanks breathers.

Then, if you ever change your mind, easy.

 

[rtcosic]

OK, Thanks all.

 

[gaz1]

if you have upvc windows fitted into the property most are vented anyway

so just block off and make internal nice its only there due to the fire needing extra air for a fire stove

personally i prefer any air going to the rear of the stove or under it so it can be blocked off within that area

saves on cold drafts being elsewhere

 

[rtcosic]

if you have upvc windows fitted into the property most are vented anyway

so just block off and make internal nice its only there due to the fire needing extra air for a fire stove

personally i prefer any air going to the rear of the stove or under it so it can be blocked off within that area

saves on cold drafts being elsewhere

Got it in one!

 

[4String.]

Chimney Sheep.

 

[minimutly]

Baaarbra, lovely girl...

 

[Cobbler]

Mutton on the menu tonight, I would think

 

[slim_boy_fat]

Baaarbra, lovely girl...

Canny, you'll set The 'Vark off......