Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Query on dry lining

  • 01-08-2017 10:35am
    #1
    Tefral
    Registered Users, Registered Users 2 Posts: 4,396 ✭✭✭


    Just looking for a second opinion here.

    I bought an unfinished house, its rendered outside but not inside. Built in 2005. The insulation in the wall is 70mm platinum insulation and a 30mm void.

    I was talking to my Engineer doing my BER (as I want to bring it up to as high a standard as I can). I want to pump the remaining void in the external walls and leave it at that, however he wants me to also line the inside of all the walls with 37.5m insulated board.

    I have the room because the house is fairly big, however I hate this idea. First of all the cost is huge, but i'm majorly concerned about moisture behind the wall.

    I'm saved because the inside wall isn't plastered yet so moisture could theoretically pass through to the block and drop down, but I really have an issue with it.

    I guess what i'm asking here is someone talk me into the requirement for this because my Engineer isnt convincing me. (yes the U-Value of the wall reaches 0.15 with the board and filled cavity)


Comments

  • #2
    Rabbo
    Registered Users, Registered Users 2 Posts: 637 ✭✭✭Rabbo


    Firstly, 30mm void is very tight. I'm not aware of any pumped bead on the market that can be reliably installed in a cavity less than 40mm.

    If you can pump the walls, is external insulation an option? You may qualify for the SEAI grant.

    If you do internally insulate to get the u value down, I'd recommend that you minimise the amount so that you don't have more than one third of the insulation inside the house. Also, you should ideally install scratch coat plaster beforehand to ensure the walls are airtight. It's something you might be able to do yourself as it will be hidden after


Advertisement