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Fitting two Velux windows

Discussion in 'Your Projects' started by mcluma, 26 Mar 2012.

  1. mcluma

    mcluma

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    Fitting a Velux window is normally not a hard job, but it is if you have to do a lot of repair to the original roof to get it right.

    Originally (from new in 1900) there had been a steel window been fitted, which had been replaced by an idiot in the 1970/80 with a Velux window, which had been done in very poor way. There had been no leaks but the structure of the roof had not been supported enough to stop a considerable sagging.

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    Untitled by mcluma, on Flickr

    They had cut out 1 roof truss which they had not compensated by strengthen up either side of the window.

    The roof trusses in the house with a dimension of 2 by 4 are not really over specified as they are.

    So the first thing I needed to do was to build a proper knee wall to take some of the weight of the roof. Then I worked out where I wanted the new windows to be.

    Doubled up the existing roof trusses (glue and bolts) but had to lift the roof with a hydraulic jack to get the 2” flex out of it. (It goes a lot easier without the weight of the tiles)

    Repaired the trusses they had cut out for the old window. Trimmed out for the new Velux and place the new Velux.

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    Untitled by mcluma, on Flickr

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    Untitled by mcluma, on Flickr

    Put the flashing on and cut a lot of tiles – I mean a lot of tiles.

    The result is a lot of light

    The Velux windows we have chosen are the ones that you can also use as an emergency exit. They can open as a normal velux (centre pivot) but also open completely at the top (top hung) to create a perfect escape route

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    Untitled by mcluma, on Flickr

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    Untitled by mcluma, on Flickr

    Thanks for looking
     
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  3. Tipper

    Tipper

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    Where's the purlin gone? Surely that was supporting the roof!
     
  4. tinytom

    tinytom

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    when u look at each end it dosent look like the purlin was bricked in, mabe it was just for show?
     
  5. fmck

    fmck

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    Yeh. When I read this last week I did wonder how the roof was sagging with a tree trunk for a purlin.
     
  6. Bodgeitandleggit

    Bodgeitandleggit

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    That is what I thought.....where has it gone ....also look at pic 2 there is light coming in but that could be part of the retiling I suppose
     
  7. mcluma

    mcluma

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    That purling didn't do anything, just for show, now the knee wall is giving good support, i had to jack the roof up by about 2 inch in the middle. the rafters are just undersized for the type of roof. the things they did about 100 years ago
     
  8. DIYnot Local

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