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Rising Damp on internal wall.

  • 29-04-2015 4:59pm
    #1
    eamon11
    Site Banned Posts: 518 ✭✭✭


    Hello Folks,

    its a 1940 bungalow which I am renovating. 12 inch walls. There was an extension done in the 80,s so the external wall is now internal. This wall is damp.
    Any solutions apart from the dry lining route.

    thanks


Comments

  • #2
    somejoke
    Closed Accounts Posts: 131 ✭✭somejoke


    I'm guessing that there would be no dpc (damp proof course) in a wall of that age, so rising damp is still an issue even though it's an internal wall now.

    I've heard that there is a liquid type of dpc that can be injected into a line of pre drilled holes and that should cure the problem.

    Have a look thru this list and it might help you out.

    Google 'Liquid dpc for walls' or something like that. I'm not allowed to posts links yet.


  • #3
    mad m
    Registered Users, Registered Users 2 Posts: 9,016 ✭✭✭mad m


    Give this place a ring

    http://www.dampco.ie

    Ask for Gerry.

    He will give you a free quote.


  • #4
    sky6
    Registered Users, Registered Users 2 Posts: 1,444 ✭✭✭sky6


    Dry lining won't get rid of rising damp it will only mask it for a period of time. You need to resolve the issue completely by
    the method suggested. There's another method where a small electrical charge is passed through the Wall. Again you should be able to find info online.


  • #5
    TheLastMohican
    Registered Users, Registered Users 2 Posts: 1,837 ✭✭✭TheLastMohican


    Hack off the old mortar up to a metre. Dampen dry spots on the wall. Spread a 1/4" of 3:1 (washed sand:cement plus appropriate amount of waterproofer) on and use a coarse brush to scratch. While the scratch coat is still green apply a second coat - this time 4:1 with waterproofer. Use devil float to close in and key.

    Cut back render a little under the existing old plaster line before plaster cures. This will allow a seamless joint.

    Skim a few days later.

    Lots of different chemical firms produce equally effective waterproof material: Sovereign, Sika, Hypercrete, Larsen, Febproof etc.


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