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Adding a Letterbox or Letter Plate Through the Wall

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Postby Jono14 » Tue May 24, 2016 8:12 pm

Hi I am having a new front door fitted but the design of the door does not lend itself to having a letter plate in it . The options are fix a letter box on the wall outside or my preferred option is put a letter plate on the wall with a sleeve going through a cavity wall . That way my post will be inside .
I am a little concerned with cold bridging ( cold air meeting warm air and forming condensation ) has anybody had any experience in this area ? I was going the build a box on the inside and insulate it .
Many thanks
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Postby welsh brickie » Fri May 27, 2016 7:06 pm

use plastic to form the sleeve, and expanding foam to fill in around it.
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Postby Jono14 » Fri May 27, 2016 10:32 pm

Was thinking of using ply to form the sleeve ?
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