Do you need to lie down screwcap wines?
The Stelvin screwcap bottle system is best layed down as the bottle cap has an oxygen permeable membrane. The porous barrier of the screwcap acts as a cork does and allows for a minute transfer of gasses. The degree of permeability of the cap depends on the manufacturer. Grégory Patriat, Jean-Claude Boisset’s winemaker, who bottles under natural cork and screwcap, prefers to store screwcapped bottles lying down in order to have a good exchange between liquid and the air through the seal. Wine that is to be drunk within a short time frame, such as 12 months, will not benefit significantly from storage either vertically or horizontally. If your wine is to be cellared for a longer period then lying down is preferable.