AERO 3 HPV DBA
3 Layers vapour permeable underlay.
- Outer layers of polypropylene and Inner layer of microporous polypropylene with reinforce polypropylene grid
- High mechanical properties.
- Temporary protection for timber frames against wind, rain, snow and dust
- Suitable for cold and warm roofs.
Must be laid on a rafter with a maximum distance of 90 cm or directly on the batten with a counter batten.The counter batten must be at least 36x20mm.
Below 30% overlap 20 cm.
Under 30% overlap 10 cm.
The Rooftiles must be installed maximum 8 days after the roof underlaynment installation.
Altitude must be less than 900m.
The double integrated adhesive strip allows a totally watertight and wind sticking between both strips.
The adhesive strips are protected by temporary strips PE that must be remove simultaneously between two strips overlaped to the implementation.
|Dimensions||1,5m x 50 m|
|Lenght overall||50 m|
|Number of layers||4 layers (+ stiffener grid)|
|Unit weight in Kg||13.0|
|Classification of centre distance||90 cm|
|Longitudinal / transverse tensile strength||420/420 [N/50mm]|
|Longitudinal / transverse elongation||40/50 [%]|
|Temperature resistance||-20 °C|
|Reaction to fire|
|Resistance to water penetration||W1|
|Longitudinal / transverse nail tear strength nominal values||390/360 [N]|
|Longitudinal / transverse nail tear strength, tolerance||-80/-60 |+120/+70|
|Properties of steam transmission, tolerance||0,02 [m]|
|Properties of steam transmission, tolerance||-0,01/+0,015|