fiat500bee
House Bee
- Joined
- Jul 5, 2020
- Messages
- 362
- Reaction score
- 252
- Location
- Nairn, Highland
- Hive Type
- National
- Number of Hives
- 2
nice to see some one continuiing with PIR. The increased insulation creates a increased pressure differential owing to the hot air buoyancy and you will find you need to seal the roof to body otherwise you wont realise the full thermal potential and the bees will suffer increased water vapour loss.
Thank-you Derek. If you could feel the interference fit of those roof components you'd consider it OK. Some "recipes" have suggested leaving clearance around the hive but I've gone for a tight fit as the void created would have negated the whole exercise. But in any case I'm doing to place a vapour-barrier immediately above the crown-board and sandwich it as the roof is put in place.