If your painting a large area that will take more than 1 day or indeed an area that needs second coat - wrap tin foil around your roller and leave aside overnight. It will not have dried out and will be ready to use the next day. This also apples to the small rollers.
If using a small gloss roller you can place it in a plastic sandwich bag pushing it well in and wrap it tightly - you can just continue to use it the next day - it will not have hardened in any way.[/b]
If using a small gloss roller you can place it in a plastic sandwich bag pushing it well in and wrap it tightly - you can just continue to use it the next day - it will not have hardened in any way.[/b]