Wakaflex® is a BBA certified lead free, flexible, adhesive flashing designed to replace lead in most modern roofing applications. The product has many advantages over traditional lead flashings for those working in the construction industry, including the simple and quick installation process and non-toxic, lightweight material. Easy application through high stretchability in both directions of the material and has a unique product composition with a self-welding effect. Properties Length: 5m. Width: 280mm. Weight: 5.2kg. Maximum pitch: 90°. Minimum roof pitch: the minimum pitch of the tile. Material: Polyisobuthylene (PIB) with aluminium-meshwork and butyl-adhesive tape. Application Chimneys. All abutments at walls. Rising parts of structures such as dormers. Compatibility Wakaflex® is not compatible with bituminous material. Wakaflex® must not be installed such that ponding can occur. Installation Laps should be not less than 50mm using a roller to apply pressure. Ensure Wakaflex® is only laid on dry, dust and oil-free surfaces. Turn into brickwork joints or chase in by not less than 30mm. Use sealant to seal the joint. Where the joint is large or uneven, form a welt at the back of the joint and seal with Sealant as above. Use strips of Wakaflex® folded several times as wedges into brickwork to retain the flashing in place prior to sealing with sealant. At top edge abutments use Wakaflex® to cover the slates by a minimum of 150mm and turn up wall by 75mm. Fix in brickwork joints as above. At mansards, extend over slates on lower roof by a minimum of 150mm. Fit a lay board and tilting fillet to the upper roof and extend flashing 150 – 200mm up the slope. Form a 30 mm welt at the top. Nail into position at the top at approximately 150 mm centres. Fixing Instructions for use around chimneys are available. For use as Saddles, Ridge/Wall junctions, fixing around roof outlets or with our top edge abutment ventilator. Guarantee 10 years against manufacturing defect.