IKO Underlayments

IKO Underlayments - Armourbase Pro Underlayment
Armourbase Pro installation

IKO Underlayments

There are 4 types of IKO Armourbase Underlayments in our offer:

IKO The Shingles Expert offers different underlayments:
bitumen saturated felt used beneath roofing to provide additional (water) protection for your roof deck.

On all pitches, IKO recommends that an underlayment must be used underneath the roof shingles.

The requirements of a suitable underlayment for a shingle roof are:

  • To protect the wood construction against bad weather conditions before and during the application of roof shingles.
  • To provide a secondary protection shield against the ingress of water, for example, rainwater rising through capillary attraction, wind-driven rain and melting ice trapped by ice damming. 
  • To provide protection in case of storm damage.
  • To reduce ‘picture-framing’, that is, the visible outline of deck panels caused by differences in roof decking thickness.
  • To be part of a shingle roof system that meets the local fire protection ratings.

Are you wondering which IKO underlayment will suit your roof best?
Order your sample(s) here so you can compare for yourself!

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°

  • Option 1:
    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.
  • Option 2
    use IKO Armourbase underlay (ECO or PRO) 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.
  • Option 3:
    use about 80% less material or save about 44% of your costs compared to option 2 (with 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.