Window Reveal Issues

[BobbyBrown]

Hi,
Ive had to remove my old plaster on a first floor wall so that I can Aquaboard it ready for the bathroom fitter in a couple of weeks. Having removed the plasterboard around the window it seems that when the new UPVC windows were added a bridging lintel was not, therefore I have a gap between the outer brickwork and the inner blockwork. Whats the best way to seal this before boarding?

 

[KenGMac]

BobbyBrown, good evening.

Not easy to see, but is that a bead insulation in the cavity? or bits of the cavity??

Ken.

 

[BobbyBrown]

Previous occupants had double glazing fitted and cavity wall insulation pumped in.
There’s a lintel above the inner block work but the outer brick course stops at the height of the new windows as the roof slopes past.
I was thinking of framing out the window area with battens and fixing plasterboard to that.

 

[Beargrills]

Hi Bobby,
Just curious as to what action was taken?
Thanks

 

[johnny2007]

They should've fitted cavity closers.
Seems that the window sits too far inside to fit them now.
I would use slices of board insulation cut to measure and jammed in the cavity.
Then tiling board glued and secured to internal leaf with wall plugs.