Sikaflex® -227 is a 1-component, fast-curing, fast-skinning polyurethane based, elastomeric adhesive/sealant. It is a moisture-cured, non-sag system. Sikaflex® -227 provides a permanently elastic bond to fasten materials which have dissimilar coefficients of expansion. Use: Waterproofing exterior lap seams, exposed and concealed joints and expansion joints in many applications, including transportation, metal roofing and construction, HVAC and othe industrial applications. Seek manufacturer’s advice before using on transparent and pigmented materials that are prone to stress cracking.