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 Post subject: Re: DIY loft conversion
PostPosted: Mon Nov 09, 2015 4:45 pm 
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Good job!


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For this message the author Mark G has received gratitude : leewallbank
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 Post subject: Re: DIY loft conversion
PostPosted: Tue Nov 24, 2015 12:06 pm 
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Great work!


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 Post subject: Re: DIY loft conversion
PostPosted: Fri Mar 25, 2016 5:17 pm 
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Well embarrassingly it's taken almost 4 months for an update! I've been crazily busy in work, the weather's been crap so I haven't been able to fit the last 2 velux in the bedroom and I stopped working in the attic a few weeks before Christmas so I could finish and redecorate the dining room ready for Christmas dinner!! Excuses over....please see below

not many pictures but fitted the waste in the bathroom before SLC
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after fitting the shower tray and underfloor heating and insulation
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SLC
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As the ceiling is quite low in the bathroom I couldn't fit a normal light so i opted for LED spots. The only problem was trying to make sure vapour control layer was right whilst ensuring there'd be enough room around the lights so they didn't over heat. I came up with this idea as i couldn't see anything for sale that would work...I'm not quite sure if this will be any good but it was the only way I could think of making sure it was tight. The top of the 'boxes' are 50mm celotex.
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I cut the polythene around the outside of the boxes and used foil tape to shut the edges.
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just finishing the pipework so I can plasterboard now
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and finally, weather was pretty good last weekend so fitted the last 2 velux
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 Post subject: Re: DIY loft conversion
PostPosted: Fri Mar 25, 2016 5:30 pm 
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Coming on now...starting to take shape!


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 Post subject: Re: DIY loft conversion
PostPosted: Fri Mar 25, 2016 5:46 pm 
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getthewheelsinline wrote:
Coming on now...starting to take shape!


yeah, thanks. The bedroom and bathroom just need boarding now and then obviously the finishing bits. Only thing after that is to connect all of the waste/water/central heating. The multi foil gets a lot of stick but to be fair we've had a pretty miserable winter and its been rather warm upstairs considering there are no rads plumbed in yet.


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 Post subject: Re: DIY loft conversion
PostPosted: Fri Mar 25, 2016 7:09 pm 
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I see you've stuffed glass wool inbetween the rafters and put some thin visqueen over.
Where is the airflow coming from? Maybe I'm misinterpreting the photos but that looks like a recipie for disaster,you need airflow behind the insulation on the cold side or you're going to get serious mould and damp.


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 Post subject: Re: DIY loft conversion
PostPosted: Fri Mar 25, 2016 8:50 pm 
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steviejoiner74 wrote:
I see you've stuffed glass wool inbetween the rafters and put some thin visqueen over.
Where is the airflow coming from? Maybe I'm misinterpreting the photos but that looks like a recipie for disaster,you need airflow behind the insulation on the cold side or you're going to get serious mould and damp.


I didn't show it on the dormer build but the whole outside has celotex fitted - the roof is kind of like a warm deck, plus the polythene should stop any moist air getting to it.


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 Post subject: Re: DIY loft conversion
PostPosted: Fri Mar 25, 2016 8:59 pm 
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leewallbank wrote:
steviejoiner74 wrote:
I see you've stuffed glass wool inbetween the rafters and put some thin visqueen over.
Where is the airflow coming from? Maybe I'm misinterpreting the photos but that looks like a recipie for disaster,you need airflow behind the insulation on the cold side or you're going to get serious mould and damp.


I didn't show it on the dormer build but the whole outside has celotex fitted - the roof is kind of like a warm deck, plus the polythene should stop any moist air getting to it.


Just out of curiosity what is the makeup of the dormers(insulation/air gap etc. And what is directly above the glass wool insulation? I've never seen a detail like that before(I've seen similar and it was saturated and mouldy within a few years)

How are the Combe ceilings insulated? Fo you have a minimum 50mm airflow between the insulation and the outside roof at those points?


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 Post subject: Re: DIY loft conversion
PostPosted: Fri Mar 25, 2016 9:09 pm 
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steviejoiner74 wrote:
leewallbank wrote:
steviejoiner74 wrote:
I see you've stuffed glass wool inbetween the rafters and put some thin visqueen over.
Where is the airflow coming from? Maybe I'm misinterpreting the photos but that looks like a recipie for disaster,you need airflow behind the insulation on the cold side or you're going to get serious mould and damp.


I didn't show it on the dormer build but the whole outside has celotex fitted - the roof is kind of like a warm deck, plus the polythene should stop any moist air getting to it.


Just out of curiosity what is the makeup of the dormers(insulation/air gap etc. And what is directly above the glass wool insulation? I've never seen a detail like that before(I've seen similar and it was saturated and mouldy within a few years)

How are the Combe ceilings insulated? Fo you have a minimum 50mm airflow between the insulation and the outside roof at those points?


from the outside in on the cheeks: render board, 25mm batton, membrane, 50mm celotex, 12mm ply. roof: fibreglass, 11mm osb, celotex, 12mm ply. the 'original' roof has superquilt with 50mm air gap left between the felt and quilt. ventilated soffits and ridge too, as well as 3ft of open space within the eaves.


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 Post subject: Re: DIY loft conversion
PostPosted: Thu Apr 07, 2016 1:54 pm 
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looks great mate! I bet it will turn out as good as it looks. would be fun to see a photo when done



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 Post subject: Re: DIY loft conversion
PostPosted: Mon Jul 18, 2016 10:52 am 
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Wow, champion job and looks like a cracking location :thumbright:

With the celotexed light boxes were you just going to attach the fittings to the inner plasterboard?


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 Post subject: Re: DIY loft conversion
PostPosted: Thu Aug 04, 2016 2:01 pm 
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Looks better and better! Bravos

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