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wozza

Cavity Closers

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Hi All,

 

Cavity Closers - anything to discuss? any recommendations? or are they all pretty much the same thing.

 

Can they be mitered in the corners or should they overlap vertically or horizontally?

 

Thanks,

 

Wozza.

Edited by wozza

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If you have rigid insulation it is difficult to make it fit snug to the closer. I know they act as a vertical DPC but why not just bring the cavity insulation to the edge and have a strip of DPC up the sides?

 

The cavity closers do hide a multitude of sins (mortar snots, missing insulation, uneven cavity width, missing wall ties) and make plastering simpler and Building Control seem to like them.

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We have a 100mm full filled cavity (Earthwool Dritherm 32)

 

They are included in the build cost.

Edited by wozza

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They work fine with compressible insulation.

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sides cut longer then notched at blockwork on bottom. Creates a drip

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5 hours ago, Mr Punter said:

If you have rigid insulation it is difficult to make it fit snug to the closer. I know they act as a vertical DPC but why not just bring the cavity insulation to the edge and have a strip of DPC up the sides?

 

The cavity closers do hide a multitude of sins (mortar snots, missing insulation, uneven cavity width, missing wall ties) and make plastering simpler and Building Control seem to like them.

The cavity closer acts as a supporting frame for the windows not just as a dpc. Its thermally better to mount the windows within the closer rather than on the outer skin. 

Can you not foam the rigid insulation to the closer to close the gap? 

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