Curtis Posted September 26, 2018 Report Share Posted September 26, 2018 just a quickie Im finishing up a sapelle entry door project and final piece is the sill. Should I put kerf lines in the bottom?? I have seen some with , some without. The one closest to the edge im guessing is the drip edge and the ones throughout the body are for sealant to settle in? Quote Link to comment Share on other sites More sharing options...
Tom King Posted September 26, 2018 Report Share Posted September 26, 2018 I never have, other than the drip. I have a weird little molding plane that is specifically for the drip groove. Quote Link to comment Share on other sites More sharing options...
Tpt life Posted September 26, 2018 Report Share Posted September 26, 2018 Notice the grain orientation. The kerfing is intended to keep that board from warping with humidity as the longer rings will grow a touch more than the shorter. If you can source a different sweep, then it is more common to have a sealant seat that is wider than a mere kerf. Like Tom alludes to, that is likely unnecessary, but could help make less mess with sealants. Quote Link to comment Share on other sites More sharing options...
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