It is your preference for how you wish to seal and support the window panes.
You are provided with panel pins to secure the panes into position and then it is your preference of suitable sealant to make them weatherproof. Products such as silicone, mastic, and putty would be appropriate.
You may wish to use beading to reinforce the window panes but this is not supplied with our wooden sheds as standard. Please do not confuse the corner strips as window beading.
We do offer a glazing kit as an optional extra with certain buildings, which would contain sufficient beading and sealant for the number of windows in that building.