The gables of irimoya style roofs used for farmhouse and tea house buildings with an attached furnace thatched with grass or straw sometimes have an opening with a lattice for ventilation, called a 'kemurinuki,' instead of the wall.
茅葺や藁葺のかまどを併設する農家や茶室建築の入母屋屋根の妻は、壁の変わりに開口し格子を設けて「煙ぬき」という換気口とすることがある。