Various factors affecting manner o...

Various factors affecting manner of moving should be anticipated when designing sealant joints
While thermal expansion and contraction are the primary factors designers take into account when detailing sealant joints for motion other factors are frequently neglected. Issues that are not always addressed include the natural, life-long expansion or contraction of a cladding material; the hardening of about sealants over time; the elastic frame shortening of a certain number of types of structures; and the ability (or inability) of a thin joint to handle highest movement.
Thomas O'Connor, chairman