Dpc on retaining wall ? - Do i or don't i ?

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Probs
Posts: 16
Joined: Thu May 01, 2008 10:18 pm
Location: Birmingham

Post: # 28976Post Probs

Hi folks,

Quick question. Do I install a DPC in a double skinned free standing garden retaining wall ?

Reason I ask is will this not compromise the integrity of the wall a little by making it somewhat weaker ?

I.e. My understanding is, lay the DPC direct to the course of bricks. Add mortar to the DPC, lay next course ?

Is that correct ?

My thinking is the obvious way to do it would be apply mortar, then DPC then mortar again then bricks but then that leads me back to the question as to whether to apply DPC at all for the reasons above ?

A swift answer would be appreciated as I can't really find owt on the site which tells me 100% either way.

Thanks again guys n gals.

- Jamie
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seanandruby
Site Admin
Posts: 4713
Joined: Mon Jun 26, 2006 11:01 am
Location: eastbourne

Post: # 28980Post seanandruby

no DPC needed on retaining. or freestanding walls.
sean
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matt h
Posts: 607
Joined: Mon Jul 09, 2007 11:14 pm
Location: gosport

Post: # 28988Post matt h

concur:D
general builder, maintenance engineer, gas and plumbing installations, extensions etc
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Tony McC
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Joined: Mon Jul 05, 2004 7:27 pm
Location: Warrington, People's Republic of South Lancashire
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Post: # 29265Post Tony McC

I disagree: a DPC should be used on retainer or free-standing walls. It *may* be omitted, but it's considered "best practice" to incorporate one.

See Brick Development Agency Guidelines
Site Agent - Pavingexpert
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