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SikaFlex-1A is a multi-purpose polyurethane-based joint sealant for all types of joints up to 13 mm (½ in) deep: joints in walls, floors, balconies, door and window frames, roofing, etc. It may also be used for weatherproofing of joints in concrete or masonry structures, wood and metal in both vertical and horizontal applications. It is durable, weather-resistant and permantly elastic after curing ( 25% joint movement). It si compatible with marble and natural stone without staining and has excellent adhesion on most substrates without priming. It has a service temperature between – 40 to 77ºC (-40 to 170ºF) and will yield approximately 3.72 lineal metres (12.2 lin. ft) applying a bead of 13 mm (1/2 in) wide by 6 mm (1/4 in) deep.