covered up

I am insulating not straight (walls are 5 degrees out) partition walls by cutting out 5cm wide rectangles, shoving mineral wool into the cavity then screwing the plaster chunk back over wooden backing. Then I use plaster filler to cover any holes, sand flat then paint. Problem is I can still see...

Hi. I wonder if anyone can help... We recently had some raised decking put up and the joist that backs onto the house has covered the 2 air bricks. We have drilled holes into the wood where the air bricks are (this is now under the decking) is this enough for the air bricks to still do their...