kingspan in loft conversion
- Thread starter domgem
- Start date
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75mm
Hi all
I'am going to install some velux rooflights and a floor in the loft of my bungalow, can anyone advise as to the thickness of kingspan between the rafters which are 50x75mm.
Thanking you in advance
Use the rolls much easier to work with and as much as will fit.
t
Thanks Dan as its a bungalow would they (Building Control) also require insulation in the new floor?
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Dunno mate... I fit and fix boilers .
I would though - but if you have downlights make sure they are fire protected.
.I would though - but if you have downlights make sure they are fire protected.
If this is a pukka job involving Building Control then I expect you will need to submit plans and specs. If you are creating a habitable space then the size of the joists under your new floor will be an issue and 75mm insulation between rafters may not be thick enough to meet insulation requirements.
You may also need a vapour barrier on the outside of the insulation.
If, however, you are just doing your own thing then get on and do it, but be aware that a future buyer may need to see building and planning permissions.
You can't pick at bits of Building Regs that you want, you either go the whole way or you don't bother....your shout.
andytw
The real answers that you won't like are:
A likely insulation thickness for the roof would be 150mm with a 50mm air gap above the insulation.
The floor will require substantial structural alterations before it can be used as a habitable room. Putting insulation in it is the least of your problems.
Despite what advertisements might imply, shoving a couple of Velux windows in your roof does not make a loft conversion.
What's this gotta do with plumbing ?
Soooorrrrry
I do like your reply! Why do'nt Building Regs state what is required rather than u/values with so many combinations?
Your right they are!!!!!!Why did you have to go and ruin it, I thought the fellas were doing quite wellWhat's this gotta do with plumbing ?
Becasue the objective is to achieve a U (or R) value. This could be done with Kingspan, Celotex, mineral wool, sheeps wool, paper fibre, foam and no doubt many many other products. It would be too complex to list all the options in building regs.
andytw
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