a full-depth sealant, i never saw or used it,,, sealants have a 'design depth to width' ratio usually in the 1:2 range,,, exceed it & you may cause loss of cohesion or adhesion.
go to home depot & buy some closed cell backer rod,,, that'll act as the btm of the sealant AND also give it shape factor,,, this is VERY specializ'd work but, if you do your homework, should come out fine,,, would suggest 100% silicone. |
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