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 all! We have been experiencing an issue on site where threads have been missing the latest postings. The platform host Vanilla are working on this issue. A workaround that has been used by some is to navigate back from 1 to 10+ pages to re-sync the thread and this will then show the latest posts. Thanks, Mike.
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

Trying to age a flat roof

  • 28-08-2019 9:23pm
    #1
    antiskeptic
    Registered Users, Registered Users 2 Posts: 9,555 ✭✭✭


    Just noticed some 2" PU/PIR insulation under a felted flat roof on an extension built in the mid 1980's. It's yellow coloured in any case.

    I wouldn't have thought this kind of insulation was around then (I remember my dad insulating with polystyrene sheeting between battens in our icebox kitchen back about then)

    Anyone any idea when this type of insulation cam on the market. It might help date the latest felt covering.


Comments

  • #2
    selfbuild17
    Registered Users, Registered Users 2 Posts: 125 ✭✭selfbuild17


    antiskeptic wrote: »
    Just noticed some 2" PU/PIR insulation under a felted flat roof on an extension built in the mid 1980's. It's yellow coloured in any case.

    I wouldn't have thought this kind of insulation was around then (I remember my dad insulating with polystyrene sheeting between battens in our icebox kitchen back about then)

    Anyone any idea when this type of insulation cam on the market. It might help date the latest felt covering.

    EPS insulation was still the most common insulation used in building up until early 2000s. The maximum allowable u values were cut significantly in the 2002 revaluations and I think this is when PIR insulation became more common place. I would doubt there are many flat roofs out there with PIR insulation that were constructed before 2002.


  • #3
    antiskeptic
    Registered Users, Registered Users 2 Posts: 9,555 ✭✭✭antiskeptic


    It was probably PU first, then PIR. I recall doing an food industrial building in 2004 and PIR was the newish kid on the block taking over from PU due to its supposed improved fire resistance.


Advertisement