IF you'll look, you'll also see it on conc hgwys, airport aprons, & any place you'd find conc slabs,,, its joint seal & the purpose is to keep incompressibles OUT of the space between the slabs,,, why you ask ? when conc ( or any solid ) gets hot, it expands [ hi-skoul fizzix ] when it expands, the ' gap ' gets smallered,,, when it smallers, the stuff that won't compress causes the conc to ' spall ' ( fracture [ break ] )
joint sealants are designed for optimal performance at certain depth:width ratios,,, to seal the jnt w/more would cause either adhesive, cohesive sealant failures OR, at the least, shorter svce life.
underneath the sealant you'll usually find a foam-stuff backer rod installed @ a depth to prevent oversealing,,, simple, huh ?
if you hear it from a guy in the apron store, be VERY suspicious the mtl/method will work,,, when it time to build something together, they won't answer phones NOR help To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.