Hi
I have had an old boiler removed and re-positioned. The old flue opening through a double skin external wall has been left (approx. 125mm diameter).
Can anyone tell me please what the best way is to fill the opening?
Many thanks
I have had an old boiler removed and re-positioned. The old flue opening through a double skin external wall has been left (approx. 125mm diameter).
Can anyone tell me please what the best way is to fill the opening?
Many thanks