As a DIY Guide to painting and decorating sash windows, this should give you an idea that it is not difficult, but it will take some time and effort. Remove the lock on the window, which should have only two screws. Then take off any old sealants and putty with a putty knife. You will probably have to sand most of the wood for a smooth finish before you paint. After sanding, take a damp cloth and wipe the wood clean.
To protect the glass from painting it in error and splashes, you can use masking tape or painters tape, but do not worry if you accidentally paint the glass. It comes off easy enough while it is still wet. If it does dry, this can always be easily removed with the edge of a straight razor.
You may want to use a primer first, as it will seal the wood and your paint will be easier to apply and it will last longer. Start painting somewhere in the middle of the window and work your way out towards the ends and corners.
Start with the bottom sash, beginning somewhere on the center mullion. Paint the sides of your window, and then the mullions that are vertical. The next step is to paint the tops of your mullions that are horizontal. If you cannot paint all of the vertical mullion, do not worry about it. Just paint what you can see. The steps for painting these windows are to the preference of the painter, of course. Whatever is easier will be the right way for you.
When the paint is dried, and your window looks great, it is time to decorate it. Be imaginative. You can buy window treatments and draperies, or you can make them customized to your window. Either way, you will need to measure the dimensions of the window to make sure you have enough material for the homemade draperies, or you will need the measurements for the store-bought ones. A more modern look will show mini blinds or wooden blinds only. Sometimes curtains are not used at all. Or you can use a combination of light-weight curtains for a breezier look. Or a combination of blinds and curtains.
Whatever you decide, I hope this little DIY Guide to painting and decorating will be used again in the future for your other windows.
To get the news on sash window repairs in London, you can visit them or look online. The sash window renovation London can be a service for those in the London area.