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1920's Pointing material advice

Discussion in 'Plastering and Rendering' started by MartinB85, 23 Apr 2018.

  1. MartinB85

    MartinB85

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    Hi Guys/gals,

    Just looking for a bit of advice in regards what product to use when patching up some pointing on my 1920's detached property.

    I've recently had a damp company come out who advised that when I do any work to only use lime mortar. There has been some patches done in the past but i'm unsure what has been used but now I need to do some areas around the windows.

    Should I be ok using a mortar mix of cement/sand/lime such as https://www.wickes.co.uk/Blue-Circle-Quality-Assured-Mortar-Mix-20kg/p/153706

    Or should i specifically be looking at a lime mortar such as https://www.lime-mortars.co.uk/lime-mortar/hydraulic/nhl-3.5/middlerigg-ruby/25kg

    There is a a cavity which has been insulated I don't know if this makes a difference or not in regards to how the walls breathe.

    Any advice is appreciated.
     
  2. John D v2.0

    John D v2.0

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    The blue circle is cement mortar, the lime is only for work ability. You would want the NHL 3.5 if it's lime you want.
     
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