Making an Entry Door Airtight

13 May.,2024

 

Making an Entry Door Airtight

I have a bog-standard exterior door that I want to completely air seal.  We’re talking air-tight to the level that I wouldn’t see any difference if I taped up all gaps with Wigluv — i.e., no air at all getting through.  And to be honest, most of my reason for wanting to do this is centered around keeping out the bugs (scorpions in particular) and I figure that air molecules are much much smaller than any bug and if I can keep the air out, I can definitely keep even the most devious of the bugs out.

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I would think that this would have an obvious and well traveled solution but it appears that most people have a far more laissez-faire attitude about it.  90% of the guides just talk about installing weather-stripping around the jambs and then adding a door sweep/shoe.  The remaining 10% will recognize that air will STILL get through in this case, by going around the threshold seal in the corners.  But the solution here is to put random amounts of felt or get some cheap foam corner wedge.  Well, I’ve tried a few of the corner wedges from the box stores and at best they do a not-terrible job (but far from great) and they get seriously chewed up by the door closing.

Mind you, I have created one completely air-tight door before in the guise of my home theater door — but that required stops going all the way around the door (even the bottom) to put a continuous non-gapped layer of weather-stripping that the door tightly presses into.  That lower stop won’t cut it for an exterior door.

Surely a solution must exist… but what is it?

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