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DIY Forum >> Building Questions >> Collapsing exteror door threshold and airbricks
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Message started by km1423 on Aug 25th, 2019, 11:59pm

Title: Collapsing exteror door threshold and airbricks
Post by km1423 on Aug 25th, 2019, 11:59pm

Hi everybody I need a bit of serious advice.

The threshold to an exterior door is seriously damaged, or rather non existent.  Entrance has a UPVC front door yet the threshold is supported by almost nothing on one side, so very bouncy.  It leaves me worried about security, and when it will actually give way.  To add complexities to this therre are airbricks under the immediate entrance, which cannot be blocked.

I just recently bought the upper flat, and clearly this threshold has seen some serious abuse and is sinking or hanging on by a thread.  Need to get this sorted very soon.

Downstairs tenants have young children, so the puschair going over it daily inceases my worry.

Hope the photographs help explain a bit better and thank you all very much in advance for the help.

[album]km1423&1566773553[/album]

Title: Re: Collapsing exteror door threshold and airbricks
Post by woodsmith on Aug 26th, 2019, 8:46am

This is one of the problems with PVC doors in that the frame isn't particularly strong. I think the best you could do with this is push the sill up as tight as you can (this is just at the edges don't push it up in the middle or the door won't close) and put some packers underneath then point up with cement.

Title: Re: Collapsing exteror door threshold and airbricks
Post by CWatters on Sep 11th, 2019, 6:12pm

Perhaps too late but...

Those don't look like air bricks, they look like metal grills covering holes. Replacing them with proper air bricks might provide enough support for the threshold.

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