Triso super 10 on its own??
- Thread starter Danny
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Dentalblock
Member
I put kingspan in mine, I think it's worth it. It's like an oven up there in the summer.
Dentalblock
Member
actually having re-read what you wrote, I see your dilemma.
depends how anal you are about it, if you feel like you should have more insulation already you might as well do it now or you'll be ripping the boards down just to add some kingspan, and you don't want that. just do it and then you wont regret not doing it, later.
depends how anal you are about it, if you feel like you should have more insulation already you might as well do it now or you'll be ripping the boards down just to add some kingspan, and you don't want that. just do it and then you wont regret not doing it, later.
johniosaif
Private Member
Keep an Eye on the air gap too, seal the insulation with silver foil.i take it you're putting 2/1 battens over the foil,boarding and skimming..
johniosaif
Private Member
I've seen it refused on some used on others..
raggles
Private Member
It depends on what you will gain by installing, Kingspan etc is messy smelly and time consuming to install by the time you foam and tape it all, not to mention expensive. I would ask whoever spec'd the triso to do the calc's for it first cos you could be spending lots of dosh and time for very little return :RpS_unsure:
johniosaif
Private Member
Have you been on the beer, half a day would kingspan a loft,calcs for tri iso are an interpretation by manufactor and unproven,hence Danny is looking to beef it up, thinking about it, I would spec celotex 100 mm,then board over with plasterboard with 50 mm insulation, pass on the tri iso this time Danny...
Danny
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Hmmm yup I am exceptionally anal about stuff like this.... on the quest for perfection constantly some call it Ocd.....
The rafters are 4x2 and I need to keep a 25mm air gap approx... so 50mm celotex is ok....
Triso is about £1100 for what I need and the celotex is about £700 on top.
Had staircase manufacturers round all week trying to design to my spec and stil comply to regs... the joys....
The rafters are 4x2 and I need to keep a 25mm air gap approx... so 50mm celotex is ok....
Triso is about £1100 for what I need and the celotex is about £700 on top.
Had staircase manufacturers round all week trying to design to my spec and stil comply to regs... the joys....
johniosaif
Private Member
£1100 ,how many rolls,? A roll does 10 m squared I think..normally we are asked for 150 mm all in, I think that has been upped since @malc , I expect you you don't have the room to deepen the joists, 50 mm plus the tri iso seems acceptable if not wonderful, problem with tri iso is you will need 25 mm air gap also , so you depth is now 125mm plus thickness on the tri iso , so that means you could batten,creating 125 mm, fit 100 mm leaving same air gap and just board over,a bit less than the max but better I think than tri iso with50 mm,,
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johniosaif
Private Member
Not proven though flynny, some councils won't accept it, some will,most private building control won't recommend it on its own, it's an odd one, we used itin Peckham a few months ago but were not allowed 6 months prior
Danny
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Yeah I think the tri iso does 16m2....
I had planned 50mm of celotex between joists with 50mm air gap between felt an celotex... then staple the tri iso onto rafters... batten accross the raftsrs and that will then create the 25mm air gap....
We dont have a great deal of head height to play with... We are already puttin in a drop landing so I can get the head height for my en suite....
raggles
Private Member
No i haven't had a drink John and tbh i'm a bit surprised at your reply considering just the other day you posted about people offering advice and spec's without knowing detail you just spec'd the job :RpS_confused: I simply gave an honest opinion on the question danny put.
johniosaif
Private Member
Didn't mean it literally re the beer, I was trying to help too, the thing about the calcs and insulation is that there is no certainty and councils are all different re whats allowed, ps this has changed recently and I am not upto date with this change,so I will sit in my naughty step now..
Fatarm
Trainee mod
Its called the ryan step now asif..:RpS_mellow:
It's main advantage is you don't loose head height the regs on lofts are over kill and the problem with some councils not using them is old boys set in their ways. The same as plasterers who won't dab only render then the plumber who won't use poly pipe, things have changed I remember when roofs didn't have felt and loft insulation and we lived 
johniosaif
Private Member
Hopefully it came by 2 am and you got some sleep...conservation areas are worse, a group of people in their seventies deciding what should or shouldn't change.
i wanted to remove a tree in a garden I was doing,( a horrible Xmas tree /graveyard tree, ) there was two meetingsin which it needed to be brought up..
I will do mate, all going alright?@Wezly you should drop past soon and take a peak
johniosaif
Private Member
Very expensive stairs, must be complex , normally well under two k circa 1700
johniosaif
Private Member
Way too much , there under two k down here,
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