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Composite Door insulation

  • 03-10-2022 08:33AM
    #1
    clvk07
    Registered Users, Registered Users 2 Posts: 124 ✭✭


    Got a new composite door, 71mm tick it is meant to A rated but when used the thermal camera see a lot of eat loss, Am I missing something?

    door.jpg




Comments

  • #2
    chooseusername
    Registered Users, Registered Users 2, Paid Member Posts: 4,618 ✭✭✭chooseusername


    Is the image taken from inside or outside?



  • #3
    Ush1
    Registered Users, Registered Users 2 Posts: 11,467 ✭✭✭✭Ush1


    Looks like could be a poor installation (same as mine) with possibly some small gaps. If it's windy can you feel any slight breeze around the colder areas?



  • #4
    clvk07
    Registered Users, Registered Users 2 Posts: 124 ✭✭clvk07


    It has been taken from inside. No gaps around the door, seal is quite good.



  • #5
    Ush1
    Registered Users, Registered Users 2 Posts: 11,467 ✭✭✭✭Ush1


    https://www.boards.ie/discussion/comment/119694783#Comment_119694783

    And where the frame meets the wall/floor? Looks like there is something going on with that very cold patch on the middle left?

    If there are no air gaps then convection isn't the problem and it would be conduction from the cold floor/ground below.



  • #6
    10-10-20
    Registered Users, Registered Users 2, Paid Member Posts: 9,516 ✭✭✭10-10-20


    It might be "A-rated" but that's against a subset of hall doors, meaning that it's probably the best of the bunch. But that does not mean that you won't see heat-loss - at the end of the day it's only 71mm thick and likely filled with ~55mm of polyiso insulation - that doesn't make it impenetrable to cold!

    Also be cautious of how you interpret the data from the FLIR - you really need consider the internal temperature, external temperature and other objects within the field of view. You can't just point it around like a blunt object and declare defects on the basis of the screen colour.

    On the flip-side - if that door was made from aerogel then I'd be wanting my money back.

    As for the frame issue - that looks minor enough and bay be a small building defect - I wouldn't necessarily be kicking up a stink.



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