The IKO Easyseal Self-Adhesive Partially Bonded Underlay consists of a glass-fibre reinforced carrier coated on either side with self-adhesive bitumen SBS elastomeric coating.
The upper surface is protected with a polythene film that facilitates rapid bonding of the subsequent self-adhesive waterproofing layers. A release film protects the self-adhesive coating on the underside of the IKO Easyseal Self-Adhesive Partially Bonded Underlay. Providing a 40% partial bond to primed substrates, the underside also has a 75mm selvedge that facilitates a full bond and rapid installation of the lap joints.
The IKO Easyseal Self-Adhesive Partially Bonded Underlay is only used on main flat roof areas, as it allows for a partial bond to be achieved to the substrate, therefore reducing the risk of blistering from any trapped vapour.
Ideal for new build and refurbishment projects, and commercial and domestic projects, this underlay is suitable for roof pitches up to 5° if reliant on adhesion alone. For roof pitches over 5°, the underlay should also be mechanically fastened in accordance with BS8217 table 5.
The underlay must be used in conjunction with an IKO Easyseal Self-Adhesive Capsheet and be installed in accordance with IKO recommendations.
