Moving from Vented to Non-Vented tumble drier

[Bruspark]

I'm wondering what you are all doing when the new tumble drier doesn't have a vent (e.g heat pump type) but the wall behind it still does . .

'Not my problem' doesn't seem to go down well as a great draughty hole is left largely inaccessible in the wall behind plus the flap vent into the cavity outside

Any fast neat 'happy customer' solutions ?

 

[Andy™]

flap vent sealed shut and fill the void with insulation / foam

other than that, they can get a builder to come and brick it up

 

[Bruspark]

Thanks guys . . I had wondered about cutting the old duct at the inside wall, then foam filling the remaining ducting IN the wall up to the flap . Easy but still removable with a bit of bother.

 

[SPECIAL LOCATION]

Maybe???
https://www.ebay.co.uk/itm/166254250558
https://www.ebay.co.uk/itm/404917648661

Just Googled.. "100mm vent duct blanking plug"