insulating a flat roof ceiling ??

[Alan.P]

i was going to put the insulation above the joists and the boards below the joists if that makes sense

Starting to now, the gap above the joists is for air circulaion as stated by Ajax, I'm not clued up on any of that side so can't comment, I see what your wanting to do, whether it's acceptable or not ???????

 

[Alan.P]

not you , it is me , it is a false ceiling below a ceiling !!! :mad2: :mad2: :mad2:

we're getting there :lol:

forget that post up there

I now have no idea lol

So you have a ceiling, and have now put a false celing in ? and want to insultae that, can't see why you can't but like I said, I'm not clued up in that area .... sorry

 

[mikethetile]

not you , it is me , it is a false ceiling below a ceiling !!! :mad2: :mad2: :mad2:

now he tells us

yes you can, ensure theres an air gap above the insulation to allow free passage of air otherwise you will have condensation problems

 

[Tecnik2000]

Just sticking my nose in here, it makes little or no difference if you can go at 90 degrees to the joists & maybe better as there are no joins or cutting to achieve the insulation required with out jeopardising your uv values. I'm sure you can devise a way of supporting the insulation adequately using battens,strapping or just laying on your sus ceiling...

 

[chrisroe]

try

triso super 10

building control in my area recommend it

 

[paulyoung666]

now he tells us

yes you can, ensure theres an air gap above the insulation to allow free passage of air otherwise you will have condensation problems

thanks for that , with the joists i go then as i have condensation problems now , due i suspect because no insulation was put above the original ceiling :furious3:

 

[Scott]

I hope you get it sorted paul as that was probably the most confusing post i have read on here so far!

 

[White Room]

Why don't you use vapor check board, fix a board to right angles to the false ceiling then slide your insulation on top of the fixed board.

The one I done with flat roof (garage conversion)required 100mm of celotex insulation and building control checked it out as well.

 

[Diamond Pool Finishers]

im not with it here , i thought i did, but no :yikes:

 

[chrisroe]

sorry cant cope with this tonight need sleep then i might be able to help its to do with differant types of hot/cold roof systems

 

[mikethetile]

it is a warm roof construction which is why its essential that there is a freeflow of air in the roof space

 

[paulyoung666]

right , i am sorted now , apologies for the confusion , i was at the point of confusing myself :lol:

 

[faithhealer]

blimey Paul, read the forum on a morning to help get my head into gear, think I'll go back to bed after reading that lol

 

[paulyoung666]

:lol: :lol: :lol:

 

[chrisroe]

no still cant cope will try later after a couple of strong coffees