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Other features are:
- the little bulk of each roll allows operator to carry more rolls during handlings and transports
- despite its lightness it shows good waterproofing properties (it is W1 ranked and has average values of 4 m in the water column test): thanks to the particular bituminous compound able to enhance its waterproofing behaviour
- it has a very valuable resistance to cold (up to - 45 °C!!!) allows it to resist also in extreme cold weather conditions
- the total adhesion on the continuous support protect it from external atmospheric agents
- application lines on the surface make the application more easy and precise
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°:
it is advised to cover the entire roof deck with IKO Armourbase STICK adhesive underlay which will seal the entire deck. End laps must be 15 cm and horizontal laps 10 cm.
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
Begin the starter strip by cutting the strip half a tab short so that its joints will not line up with the joints of the first course of shingles.
The starter strip should overhang the eaves by 6-10 mm and the rakes where applicable.
