EternaCaulk is used to seal roof joints (seams) and tears, flashings, copings, skylights, gutters, etc. It can be used to fill holes on most roofing materials. EternaCaulk is compatible with all EternaBond MicroSealant tapes and is ideal for roofing applications where appearance is important. Composition EternaCaulk is a thermoplastic elastomer based sealant with a roofing approved VOC <250 g/l (compliant in all 50 states).
Surface to be sealed must be clean. Remove heavy accumulations of loose rust and scale, dust, talc, and dirt. Oil, grease, and other contaminants should be removed with EternaClean or a non-residue cleaner. Porous surfaces may be primed with EternaPrime prior to application of this product. *Do not use EternaPrime on PVC roofs as reactivation of some plasticizers may occur.
To use, cut top to size and puncture seal. Maximum recommended joint width and depth is 3/8 inch. Use backer rod for deep joints.