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

flooring the attic

  • 16-06-2015 9:47am
    #1
    tjc28
    Registered Users, Registered Users 2 Posts: 295 ✭✭


    Hi, looking for some advice on what to do with elecrical cables in the attic. I'm looking to get a floor down on the main area so I can use it for storage and the electrical cables are running all over the place.
    Would it be dodgy to cut small V cuts into the beams to run the cables through or should I consider boxing them off in some way.
    I have no expertise with electrical cable so if I go for the latter I would get a sparks in.
    Is it dodgy to do the V cuts in terms of the structural integrity?
    Thanks in advance.


Comments

  • #2
    macnug
    Registered Users, Registered Users 2 Posts: 619 ✭✭✭macnug


    tjc28 wrote: »
    Hi, looking for some advice on what to do with elecrical cables in the attic. I'm looking to get a floor down on the main area so I can use it for storage and the electrical cables are running all over the place.
    Would it be dodgy to cut small V cuts into the beams to run the cables through or should I consider boxing them off in some way.
    I have no expertise with electrical cable so if I go for the latter I would get a sparks in.
    Is it dodgy to do the V cuts in terms of the structural integrity?
    Thanks in advance.

    I made small notches in joists when flooring my attic last year and it had no negative effects so far.


  • #3
    Benster
    Registered Users, Registered Users 2 Posts: 657 ✭✭✭Benster


    Depending on your roof type, cutting through the beams might be trouble, even partially. Truss roofs are like that.
    I layed new beams across the old and cut Vs out of the new ones when I did mine.


  • #4
    arthur daly
    Registered Users, Registered Users 2 Posts: 477 ✭✭arthur daly


    Notch them is usually the way to go,
    Be careful of the cables when securing floor :b


  • #5
    slimjimmc
    Registered Users, Registered Users 2 Posts: 7,786 ✭✭✭slimjimmc


    Do not notch a trussed roof. The timbers in a trussed roof are generally much thinner than traditional cut roofs and are highly stressed. The bottom chord of a truss is typically only 100mm-150mm deep and is under a lot of tension, cutting a notch will introduce a stress point which could weaken the entire truss significantly. It may not happen but you've increased the risk.

    http://www.dwbgroup.co.uk/files/9513/5284/7946/Limits_for_Cutting_Notching_and_Drilling_Of_Trussed_Rafters.pdf


  • #6
    gutteruu
    Registered Users, Registered Users 2 Posts: 1,064 ✭✭✭gutteruu


    Do not notch. Run some lengths of 4x2 laterally across joists and lay floor on them. Cables can go under these without any need for sparky's etc.


  • Advertisement
  • #7
    tjc28
    Registered Users, Registered Users 2 Posts: 295 ✭✭tjc28


    thanks to all for your advice. food for thought in there, think I'll play safe and not cut notches into the joists.


Advertisement