... curtain wall,building facade,waterproofing movement joint&sealed layer to glasses,Al Description:ZJ-2000 Weatherproofing Silicone sealant is a one- ... sunlight,rain,snow,ozone or temperature extremes. 5.low modulus sealant 6.extension/compreession movvement capability of up to+-50% ... joints of non-structural curtain wall.It can form a waterproofing sealed layer to many kinds of glasses,coated aluminum, ...