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    • CommentAuthormarsaday
    • CommentTimeMar 15th 2017 edited
     
    Is it possible to make your own roof light ?

    I am looking at using a fixed flat light light this:
    https://roof-maker.co.uk/rooflights/fixed-flat-rooflights/

    My roof will be a flat. The joist and insulation and sheeting will be a depth of approx 270-350mm.

    I can order my own glazing. Just need to make the frame. Was thinking about using dried oak as using oak in the extension. Would look nice. Anyone think this is a bad idea ? Leakage issues with flexing etc ?

    Doing the roof in fibre glass, so the frame which sticks out of the roof a bit could be fibre glassed up. Just need to think about a finish frame maybe over the top.
    •  
      CommentAuthordjh
    • CommentTimeMar 15th 2017
     
    It's certainly possible. I think there are previous discussions on this site. You need an upstand and the details of how to insulate the upstand and connect it to the roof insulation is one of the main decisions. I think typically it is easier to just sit the glass on top of the upstand without a frame. The only useful place for oak is probably as a veneer on the inside if that is what you want.
    • CommentAuthormarsaday
    • CommentTimeMar 15th 2017
     
    Yes i was thinking what would oak on the four sides of the hole in the roof look like as opposed to plasterboard and skim.

    This needs a bit of research. I will have a look on past discussions.
  1.  
    I am sure Tony has posted a detail before.
    • CommentAuthorSigaldry
    • CommentTimeMar 16th 2017
     
    It could look nice, but could also be an awful cold bridge.
    • CommentAuthorowlman
    • CommentTimeMar 16th 2017
     
    Posted By: marsadayYes i was thinking what would oak on the four sides of the hole in the roof look like as opposed to plasterboard and skim.

    This needs a bit of research. I will have a look on past discussions.



    It depends on the finish of the rest of the ceiling. If that is plastered then an "integrated" all plaster look may be best for the reveals.
    You can always line it afterwards with oak faced material if you prefer that look sometime in the future.
    For the box external upstand construct it from double skin with insulation in-between. You can glaze using standard roof glazing components. It won't open of course, but I've never found that a problem.
    • CommentAuthorDarylP
    • CommentTimeMar 16th 2017
     
    make a flat rooflight from 3G IGU, on a sort of ply/OSB top-hat, but bring the ply/OSB upstand inboard of the insulation...
      RoofLightFlatUpstandSimple.JPG
    • CommentAuthorringi
    • CommentTimeMar 16th 2017
     
    Has anyone consider using COMPACFOAM 200 form green building store for the up stand?

    RoofMaker says the 2by3 wood MUST be used above the level of the main roof covering that rather defeats the point of a warm roof.
    •  
      CommentAuthordjh
    • CommentTimeMar 16th 2017
     
    Posted By: ringiHas anyone consider using COMPACFOAM 200 form green building store for the up stand?

    I would think any EPS 200 or greater would be stiff enough.

    RoofMaker says the 2by3 wood MUST be used above the level of the main roof covering that rather defeats the point of a warm roof.

    I don't understand. What 2by3 wood? Do you have a link, please?
    • CommentAuthorringi
    • CommentTimeMar 16th 2017
     
    Its on their installation instructions that I got from their website some time ago.
    • CommentAuthorMarkyP
    • CommentTimeMar 16th 2017
     
    I have the roof maker skylight. I made an insulated upstand myself. I was going use to compacfoam but in the end went with timber. I made the upstands from ply, boxing in insulation. You need a 75mm wide upstand for the roofmaker to screw down onto. The upstand has to be min 25mm above the deck at lowest, but also needs a 3 to 5 degree fall to shed water. I think my upstand is 180mm proud at one and, down to 30mm at the other. The ply facing is a cold bridge, as is the rooflight frame. the frame is thermally broken by a bit of XPS, better than nothing but not great. I cant recall if roofmaker provide a whole window or glazing only u-value.

    Others (Tony, I think) have talked about making the roof light DIY but I dont recall any design details or pics of the finished product, just descriptions of using bits of alu trim and so on. The roof maker is a good product, but isn't cheap. I had way too much on my plate to go the DIY route.
    •  
      CommentAuthordjh
    • CommentTimeMar 16th 2017
     
    Posted By: ringiIts on their installation instructions that I got from their website some time ago.

    that's not a lot of help.
    • CommentAuthormarsaday
    • CommentTimeMar 16th 2017
     
    Thanks for comments, if tony has a detail it will be appreciated (or a link to a past post)
    • CommentAuthortony
    • CommentTimeMar 19th 2017 edited
     
    I am not properly connected, sorry

    The bottom edge MUST have a decent overhang, are least 50mm

    The unit should be stepped at the bottom again the top glass should oversail by 50mm

    There must be no possibility of water getting entrapped against spacer bars.

    Better not touch glass with plasterboard, thin wood trim or something next to glass

    More another day
    • CommentAuthormarsaday
    • CommentTimeMar 19th 2017
     
    Ok, sounds good. Also just read this link this weekend which has some good photos showing instal:
    https://www.diynot.com/diy/threads/panoroof-skylights-are-they-any-good.464262/
  2.  
    ''I am not properly connected, sorry''

    But you know all of us, so of course you are!
    •  
      CommentAuthorfostertom
    • CommentTimeMar 20th 2017
     
    He means his brain-battery is running low - "More another day "!
    • CommentAuthortony
    • CommentTimeMar 20th 2017
     
    He means that he is abroad with very little and very slow web connection, no downloads except in middle of the night.
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