Sika® Boom APSika Boom AP is a 1 component, fast curing polyurethane foam suitable for multi position applications. Uses: Sika Boom AP is used for fixing, insulating and filling connection joints around window and door frames, pipe entries, air conditioning vents and roller blind housings, etc. Sika Boom AP allows insulation against noise, cold and draught after single application CHARACTERISTICS ADVANTAGES Multi positioning foam; application in all positions