Wiktionary
a. Without drafts (air currents).
Usage examples of "draftless".
Grateful for their own billets, stored firewood, shuttered windows and draftless walls.
The Indians of the Southwest deserts preferred the shade and openness of a ramada for their kitchen and dining areas to the confining and draftless interior of their houses.
They made good houses, water-tight and draftless, room for twenty-four families, one family in each end of each car.
The door slammed shut behind her as the ship lurched into yet another swale, and she leaned against the wall to steady herself, savoring the draftless warmth of the quarters as she slowly dragged the sodden cloak away from her.
Landlords didn't care to spend more than they had to on maintenance of these old buildings, and when they got word that an inspection was in the offing, they frequently created a new and draftless facade by tarring and papering the exterior with any of a number of cheap substitutes for real wooden siding.