Garden door threshold

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4 Oct 2023
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Hi,

I removed the garden door threshold (20mm mdf board, about 25cm wide and 190cm long) to see what's under it and here is what I found

threshold.jpg


I have a few questions.

Is that plastic thing a cavity closer?

The inner leaf of the house is built from blocks (aircrete), so why are there regular bricks here and not blocks?

Is it OK to put a layer of mortar over the cavity closer and bricks to get a flat surface? I would not go over the insulation (between the bricks and screed), just the bricks and closer.

Thanks
 
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