Glass roll and manufacturing method for glass roll

A manufacturing method for a glass roll, the manufacturing method comprising rolling a glass film into a roll around a roll core under a state in which a protective film is superposed on the glass film, wherein:

• the protective film is superposed on an outer peripheral surface side of the glass film under a state in which tension of from 100 kPa to 1 GPa is applied to the protective film in a rolling direction;
• and
• the rolling comprises rolling the glass film on which the protective film is superposed so that the following relationships hold true:
• {(tg×Eg)/(tp×Ep)}×(tg/R)≦0.1;
• and
• tg/R≦1×10−3,
• where tg [m] represents a thickness of the glass film, Eg [Pa] represents a tensile modulus of elasticity of the glass film, tp [m] represents a thickness of the protective film, Ep [Pa] represents a tensile modulus of elasticity of the protective film, and R [m] represents an outer diameter of the roll core.