particular material should be critical to performance of this invention provided of course that the material provides an adequate level of adhesion to glass has low mvt is sufficiently elastomeric durable weather resistant and the like thus the selection of bonding material 20 is deemed to be a matter of choice and within the area of ordinary skill and routine experimentation for example polysulfides polyurethanes silicones polymercaptans copolymers and mixtures thereof could also be used as bonding material 20 but are less preferred because they must be cured prior to curing such substances must typically be handled carefully since impurities contaminants and sometimes even humidity or oxygen often cause curable materials to cure prematurely or alternatively prevent them from curing at all furthermore once applied and allowed to cure the cured material will generally not re seal to a surface once it is pulled away from that surface non curing substances such as those discussed above are much easier to handle and use since they will generally maintain their soft thick and sticky character often even in the presence of oxygen humidity impurities or contaminants furthermore the non curing substances will generally re seal to a surface if applied to and later pulled away from a surface the non curing substances are often less costly and generally less labor intensive to apply.