flow of foam 320 for instance the wicking object 450 could be formed of a porous fibrous material that does not use capillary action but does allow water flow one example of such a material is the home slicker u00ae product sold by benjamin obdyke incorporated horsham pa alternatively traditional fiberglass insulation can be used since water is not absorbed by the glass fibers found in fiberglass insulation water that enters channel 500 would flow through the fiberglass fibers 450 down to the sill 230 fig1 shows a sixth embodiment of the present invention in which a wicking strip 460 is attached directly to the window frame 120 in the preferred embodiment the wicking strip 460 abuts against both the nailing flange 170 and the main portion of the window frame 120 alternatively the wicking strip 460 could be attached to only one of these portions 120 170 of the window 100 so long as the strip 460 is positioned near both the nailing flange 170 and the window frame 120 this wicking strip 460 will allow moisture to pass through it while impeding the progress of foam 320 as shown in fig1 notice that the strip 460 in fig1 is not attached directly to the nailing flange 170 the wicking strip 460 acts to stop the foam 320 at face 462 while partially filling gap 500 as with the wicking object 450 that is positioned in the gap 500 the wicking strip.