Types of Caulking Silicone Lasts 12-30 years best adhesion use in seams, cracks, gaps up to 1/4" good for all surfaces may not take paint Butyl Lasts 8-10 years some shrinkage use in seams, cracks, gaps up to 1/4" available in many colors Acrylic Latex Silicone Lasts 12-20 years easiest application use in seams, cracks, gaps up to 1/4" may not take paint Acrylic Lasts 8-10 years water clean-up use in seams, cracks, gaps up to 1/4" no odor Latex lasts 2-10 years water clean-up use in seams, cracks, gaps up to 1/4" most are paintable available in many colors Oil Base Asphalt Lasts 1-4 years soft and tar-like use in seams and gaps on roof around chimneys, stacks and pipes to 1/4" hardens rapidly cracks Caulking Cord Lasts 1-2 years peel from roll then push in place temporary filler around storms, air conditioner comes in rolls, unused portion can be stored for years Oakum Twisted hemp treated with tar cut to needed length then push in place stuff large gaps then caulk over the oakum Glazing Compound Lasts indefinitely application requires some practice with a putty knife use as a seal between window glass and frame often overlooked as an area needing repair. This article was written by Anne Field, Extension Specialist, Emeritus, with references from Michigan Extension bulletin Caulking and Weather-stripping.
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