Builder didn't add cavity tray.. How to rectify?

[Mr Sparkle]

Getting an extension built and I noticed that the builder/ bricklayer didn't add a cavity tray

They simple installed the lintel and built up the wall above (see attached images). What I want to know is what is the best way to rectify this issue?

The first image shows the opening for the patio door. The second image is an opening for a window.

I am looking for a good solution, which would be the least disruptive (if possible).

 

[mattylad]

I say this not knowing exactly what cavity tray does - but if you need it then:

While it is at this stage, remove the bricks above and redo it with the cavity tray.
Don't mess about with half assed unsuitable resolutions - do it properly.

 

[catlad]

I don't think you will have a problem if you have a 300mm soffit.

 

[freddiemercurystwin]

He'll probably be OK as you say, however waterproofing costs a few £s to fit first time round but £800 or something to rectify if there is a problem. Why should the homeowner take that risk?

 

[Mr Sparkle]

I say this not knowing exactly what cavity tray does - but if you need it then:

While it is at this stage, remove the bricks above and redo it with the cavity tray.
Don't mess about with half assed unsuitable resolutions - do it properly.

Great shout..

If the job is done poorly the first time, you will pay later on..

He'll probably be OK as you say, however waterproofing costs a few £s to fit first time round but £800 or something to rectify if there is a problem. Why should the homeowner take that risk?

Agreed

Thanks for the help guys.

 

[noseall]

Getting an extension built and I noticed that the builder/ bricklayer didn't add a cavity tray.

Looks to me like you have a standard Catnic CN/ lintel coupled with Dritherm insulation. Any wind driven rain eventually percolating through, with be deflected back down the cavity along with the rest.