The assembly of a proper moisture technical construction would be as follows:
- Vapour transmission tight (non-breathing) roofing on the exterior (warm)
side of the insulation.
- Insulation.
- Vapour transmission open (breathing), but airtight roof underlay against
- the refrigeration store on the cold side of the insulation.
- Because refrigeration stores often have low air pressure, the sealing layers
- need to be airtight on the roof, walls and floor in order to prevent air leaks.
Airtight transitions between the roof and walls, as well as around feed-throughs,
are particularly important.
- Cold bridges must be avoided.
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