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Damp proofing advice

  • 16-02-2020 11:56pm
    #1
    bigdave000000
    Registered Users Posts: 16 ✭


    Hi,

    I'm looking to build a lean to timber frame shed off 2 existing L-shape garden walls. My question is what do I need to apply to the walls to ensure there is no damp in the shed. The walls are solid blocks on the flat with sand/cement dome shape on the top and dry dashing on the gardens external side.

    Thanks in advance


Comments

  • #2
    Calahonda52
    Registered Users, Registered Users 2 Posts: 12,561 ✭✭✭✭Calahonda52


    Are the walls exposed?
    what's the plan for the floor?
    Is there a DPC in the walls?
    does the ground slope to or away from the site?
    Are both walls your with unfettered access?

    Forget about damp proofing, work on keeping it dry.

    “I can’t pay my staff or mortgage with instagram likes”.



  • #3
    bigdave000000
    Registered Users Posts: 16 ✭bigdave000000


    The walls are exposed and the floor will sit on 1200 gauge polythene(Poured concrete, DPC and timbers on top). The polythene could be pulled up the walls in one piece but i would need to puncture it to fix the timbers.
    The walls dont have DPC.
    Ground slightly slopes away.
    Both walls are mine - no access issues.

    Not concerned with keeping it dry from the new parts. The roof will be a approx 15 degrees, torch on felt with the new walls being T&G boards painted with exterior wood paint.


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