Light soapy water applicator swab and scrim,
when you go in find a solid floor (not carpet) to put your bucket on.It can be expensive to clean carpets with bucket marks.
Ring out your swab to prevent drips, ring out your applicator to prevent drips and wipe your squeege dryish to prevent drips. The running theme is not to drip water anywhere.
Carefully soap up glass, then wipe frame around glass with swab, squeegee window. As you squeegee down hold the applicator below to catch the DRIPS. When you finish the glass wipe the sill dry.
The most common mistakes are
1 leaving bucket marks on carpet
2 drips below window, usually on emulsion paint
good luck
