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IKO Armourbase Pro PLUS has all the features of the Armourbase PRO underlayment and goes even a step further…
IKO Armourbase Pro PLUS is a modern and flexible bituminous roof underlayment with bituminous strips for adhesion of overlapping.
Thanks to these self-adhesive overlaps , one does NOT have to overlap by 50% at low slope (15-20°):
in other words saving money and time!
This also creates an increased protection against the risk of water infiltration along the area of mechanical fixing.
Application instructions
Install as flat as possible to prevent unevenness from being projected in the shingle surface. Install parallel to the eaves.
Slopes 9,5°- 20°
use about 80% less material or save more than 40% of your costs compared to the 50 cm overlapping method with Eco and Pro and use IKO Armourbase Pro PLUS.
Unique product in the underlayment range!
Slopes 21°- 85°
The entire roof deck should be covered with IKO Armourbase underlay or an approved shingle underlay.
The underlay should be installed parallel to the eaves with a min. 10 cm horizontal lap and 15 cm end laps.
On all IKO Armourbase underlayments there are 10 cm lines on the rolls for easier overlapping.
Secure the underlay with only enough nails to hold it in place.
Application instructions
Install as flat as possible to prevent unevenness from being projected in the shingle surface. Install parallel to the eaves.
Slopes 9,5°- 20°
use IKO Armourbase ECO to provide a double coverage of underlay to the roof deck. Cut a starter strip 50 cm wide and lay succeeding courses fastened with 50 cm horizontal laps and 30 cm end laps.
Slopes 21°- 85°
The entire roof deck should be covered with IKO Armourbase underlay or an approved shingle underlay.
The underlay should be installed parallel to the eaves with a min. 10 cm horizontal lap and 15 cm end laps.
On all IKO Armourbase underlayments there are 10 cm lines on the rolls for easier overlapping.
Secure the underlay with only enough nails to hold it in place.
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
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.
