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Application Film Armourvent Special
IKO ventilation on your roof offers quite some benefits:
- Extend the life of your roof and of your shingles
- Increase your living comfort
- Regulate the moisture in your roof
- Allow excess heat and water vapour to escape from the roof
- Allow air to circulate between insulation and roof deck
- Prevent humidity from damaging the roof construction
- Cool down the roof in hot weather conditions
- Prevents ice-dams after snow
Application instructions
It is essential to allow heat dissipation and water vapour to escape the roof system through proper ventilation. Therefore, air must be able to circulate freely between insulation and the nailable roof deck, from the eaves to the ridges.
On roof pitches 15°- 40° the minimum net free ventilation area is 33 cm²,
on 41°- 85° min. net free ventilation area is 16 cm² for each 1 m² of insulated ceiling area (P),
always divided evenly between the eaves and the ridge.
Fix the Armourvent Multi every 35 cm on both sides with long nails.
IKO ventilation on your roof offers quite some benefits:
- Extend the life of your roof and of your shingles
- Increase your living comfort
- Regulate the moisture in your roof
- Allow excess heat and water vapour to escape from the roof
- Allow air to circulate between insulation and roof deck
- Prevent humidity from damaging the roof construction
- Cool down the roof in hot weather conditions
- Prevents ice-dams after snow
Application instructions
It is essential to allow heat dissipation and water vapour to escape the roof system through proper ventilation. Therefore, air must be able to circulate freely between insulation and the nailable roof deck, from the eaves to the ridges.
On roof pitches 15°- 40° the minimum net free ventilation area is 33 cm²,
on 41°- 85° min. net free ventilation area is 16 cm² for each 1 m² of insulated ceiling area (P),
always divided evenly between the eaves and the ridge.
Ideal solution for…
- Low slope wooden deck: Slopes between min. 4° and max. 15° need to be applied horizontally without the Armourbase Thermo AD being affixed mechanically on overlapsbeing affixed mechanically on overlaps.
- Concrete deck: Horizontal application without mechanical fixing on slopes between min. 4° and max. 15°. For steeper slopes (max. 45°), vertical application with mechanical fixing of the membrane with screws (+ metal plate) on the overlaps is mandatory.
- Thermal insulation on concrete / OSB shingle roof (min. 4°- max. 15°): The thermal insulation must be applied and mechanicaly fixed on the concrete deck or on the OSB deck only for slopes between 4° and 15°. In these cases Armourbase Thermo AD must also be fixed on overlaps because of the underlayment’s adherence to insulating elements.
- Renovation existing flat roofs (> 4°): (only if the roof is dry, clean and watertight) Primer AD + mechanical fixation needed to install this concept.
How to apply the torch on system?
Application of the underlayment on a wooden deck
Apply the membrane parallel with the eaves - vertical and horizontal overlaps should be min. 10 cm. Set the roll of Armourbase Thermo AD and remove the release film from the back. In warm, sunny weather the underlayment will stick with the wooden deck in a short time.
For slopes between 4° - 15° it is not necessary to fix the underlayment on overlaps. It is advisable to go with proper metal flashings at the eaves and rakes.
Provide horizontal and vertical overlaps 10 cm between the sheets and make sure to remove the side selvedge release foil. After application use a suitable roller and apply pressure over all overlaps.
The adhesion of Armourbase Thermo AD will start with the application of bituminous shingles by torch-on.
Application of the underlayment on a concrete deck
Apply the membrane parallel with the eaves - vertical and horizontal overlaps should be min. 10 cm. The position of Armourbase Thermo AD on the concrete deck with slopes higher than 15° should be perpendicular to the eaves.
The concrete deck must be primed with the Primer AD (bituminous primer) before the application. Set the roll of Armourbase Thermo AD and remove the release film from the back. In warm, sunny weather the underlayment will stick with the primed concrete deck in a short time. In cold weather you can help to set the Armourbase Thermo AD underlayment with a hot air gun or a torch.
For slopes between 4° - 15° it is not necessary to fix the underlayment on overlaps. For concrete decks with slopes between 15° - 45°, fixation is mandatory. This can be ensured with screws and metal pressure plates for concrete. There is a need to pre-drill holes every 30 cm on overlaps. It is advisable to go with proper metal flashings at the eaves and rakes. Provide horizontal and vertical overlaps 10 cm between the sheets and make sure to remove the side selvedge release foil. After application use a suitable roller and apply pressure over all overlaps.
The adhesion of Armourbase Thermo AD will start with the application of bituminous shingles by torch-on.
