Lorry, lorry polystyrene.

I'd have expected one to every other tile at least. Our slates all have 2 each and still rattle when it gets blowy. But then at 1400' and exposed it does get a might windier than most places...

No, the water barrier needs to go on top of the insulation and all the timber in the drafty gap under the tiles.

Personally if you want a warm roof with the insulation on the outside of the rafters you really need to be getting proper advice from a roofing specialist. The normal way for a warm roof is the outer layer to be traditional with insulation between the rafters.

Reply to
Dave Liquorice
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Oopps. I misrtead youur sizes. I was thiking of the 1.2m x 600mm or whatever it is 4x3 2 fiit, ou are talking 8x4 right? so multiply by at leats 4, maybe 8, because 100mm is damned thick. somewhere in the 20 quid plus reguon.

Reply to
The Natural Philosopher

According to my Architect waht you do is this ................

from the rrafters you put on the insulation, then nail battons on top of the orignal line of the rafters. Then goes in the felt, then the cross battons which hold the tiles.

Now you go inside, and put more insulation between the rafters, then you finish it off. This way the bottom of the rafters poke out into the room, you you have exposed rafters.

Reply to
Rick Dipper

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