adhesive backing covered by a removable nonstick cover the thickness of the tape is set such that the tape will absorb any expansion of adjacently installed brick without allowing the expansion to deform the window frame the width of the tape is set such that an edge of the tape forms the base of an appropriately sized caulk receptacle the tape is placed on the outer periphery of the window frame brick siding is then installed such that it abuts the tape application_number US 21099008 A description the definitions of words and phrases stated above also apply to this section window frame spacing tape 20 is intended to be applied to the external lateral perimeter surfaces 32 of a window frame 30 which has a nailing fin 36 extending from each of its sides window frame spacing tape 20 spaces the siding material 52 54 of a building 44 apart from of the window frame 30 by a predetermined first gap 56 fig1 6 show window frames 30 a typical window frame 30 is rectangular the window frame 30 holds a window sash 38 the window sash 38 holds a window 42 usually the sash 38 can move within the window frame 30 this allows the window 42 and the window sash 38 to be opened and closed the window frame 30 has an external frontal surface 34 typical external frontal surfaces 34 are shown in fig2 fig4 and fig6 the external frontal surfaces 34 are parallel to their respective windows 42 the.