Windows are difficult to see through when they have a glaze of Epsom salt crystals formed on their surface. Applying a coat of Epsom salt frosting to one or both sides of a window is quick and effective. Light is still able to get through the window, much like light from a frosted light bulb. Add another level of privacy to your home by frosting your windows with a paint made from Epsom salt.
Open a full beer bottle or can the evening before the planned glazing so it releases most of its carbonation.
Dump the beer into a mixing bowl and add about one-third of the half-cup of Epsom salt in as well.
Mix the ingredients together with your fingers as you slowly add the remaining Epsom salt. Using your fingers will allow you to feel when the granules are no longer dissolving, which means it is time to stop adding salt.
Add a few drops of food colouring to the mix to give your glaze a tint that further reduces visibility. Blue food colour mixes with the yellow colour of the beer to create a please green tint. Green and red will tint the glaze extra dark and block the most light.
Dip a sponge into the mixing bowl and apply a coat to the outside of the window, starting at the highest point and moving down. Each window takes about two minutes to glaze with the Epsom salt blend.
Touch up any spots you see after 30 minutes of drying by lightly dabbing on Epsom paint with the corner of the sponge. Continue on to glaze the inside of the window in the same fashion for an even harder-to-see-into window.
Dry weather is the best time to apply Epsom crystal glaze on windows. Rain or a misdirected sprinkler head are the only things that will wash off the glaze and keep the window from looking frosted for three months or more.
Renters should check with their landlord or property manager before Epsom glazing windows, as it may be a violation of the rental agreement.