This tool should be used as a guide only. Jotamastic 87 Aluminium may not be an exact match for Ecolosilk Bond by but we have given the closest match we can. Jotamastic 87 Aluminium should do the same job and have similar properties but you should always read the technical data sheets for both Jotamastic 87 Aluminium and Ecolosilk Bond to be sure. Please see any notes to see any major differences and call us on 01285 862132 if you have any specific questions.