ᐅ Cold roof construction and brick veneer facade: what is the correct method?
Created on: 21 Sep 2016 14:47
K
KnallkörperK
Knallkörper21 Sep 2016 14:47Hello everyone,
At our construction site, the formwork (roof decking) made of boards has now been installed on the rafters. On top of that, there is a vapor-permeable underlay membrane, followed by counter battens, battens, and then the roof tiles.
I want to have a so-called cold roof. There will be insulation between the rafters in the sloped roof area of the upper floor, as well as insulation of the attic floor. This means that from the attic interior, one could see the roof decking boards.
As far as I understand, the insulation between the rafters should be about 4 cm (1.5 inches) thinner than the thickness of the rafters. This would leave an air gap of 4 cm (1.5 inches) between the roof decking and the mineral wool insulation. I imagine this air gap would be visible from the attic and ventilate into the attic space.
The attic ventilation could either be via the ridge (which is how it is currently) or through ventilation openings in the gable ends (which is complicated due to the half-hipped roof). How is the fresh air intake at the eaves side implemented? Adequate outside air must enter the gap between the roof decking and the mineral wool from the outside. On the exterior, we have brickwork that is built up from below up to and between the rafters. There must be a 4 cm (1.5 inches) gap left in the rafter field to provide sufficient fresh air cross-section. How is it ensured that no insects enter here? Is that even possible? How does that work visually—does anyone perhaps have a photo of this?
Does the mineral wool need to be fixed and protected on its upper side within the gap, or can it simply lie there openly?
My architect is on vacation 😉 It would be great if someone with experience could give me some feedback on this!
At our construction site, the formwork (roof decking) made of boards has now been installed on the rafters. On top of that, there is a vapor-permeable underlay membrane, followed by counter battens, battens, and then the roof tiles.
I want to have a so-called cold roof. There will be insulation between the rafters in the sloped roof area of the upper floor, as well as insulation of the attic floor. This means that from the attic interior, one could see the roof decking boards.
As far as I understand, the insulation between the rafters should be about 4 cm (1.5 inches) thinner than the thickness of the rafters. This would leave an air gap of 4 cm (1.5 inches) between the roof decking and the mineral wool insulation. I imagine this air gap would be visible from the attic and ventilate into the attic space.
The attic ventilation could either be via the ridge (which is how it is currently) or through ventilation openings in the gable ends (which is complicated due to the half-hipped roof). How is the fresh air intake at the eaves side implemented? Adequate outside air must enter the gap between the roof decking and the mineral wool from the outside. On the exterior, we have brickwork that is built up from below up to and between the rafters. There must be a 4 cm (1.5 inches) gap left in the rafter field to provide sufficient fresh air cross-section. How is it ensured that no insects enter here? Is that even possible? How does that work visually—does anyone perhaps have a photo of this?
Does the mineral wool need to be fixed and protected on its upper side within the gap, or can it simply lie there openly?
My architect is on vacation 😉 It would be great if someone with experience could give me some feedback on this!
Similar topics