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How to frost glass

A person trimming frosting along the edge of a window using a trimming knife

Overview

Window frosting is an affordable way to improve the privacy of any room. Learn how to prepare your window and put the frosting on the glass with a minimum of fuss. We'll show you clever tips that help you avoid creases and air bubbles. You will also see the best way to prepare your frosting before you put it on the glass.

Tools and materials

Tools

Materials

Steps

1Clean the window

Use a mixture of baby shampoo and water with a damp cloth to clean the window. This will remove any build up of grease and dirt. It is worth spending time on this step so the adhesive backing on the frosting sticks properly to the surface of the glass.
A person cleaning a window with a cloth

2Measure and trim the frosting to size

Measure the height and width of your window to see how much glass you need to cover. Give yourself a generous overlap of at least 5cm on each side. Cut your frosting and then hold it up to the window to check your measurements are right. 
A person measuring a frosting sheet using a measuring tape

3Prepare to put the frosting onto the window

Peel the first few centimetres of backing off the frosting. It can be tricky to separate from the frosting, so use masking tape on both sides of the corner to get started. Once you've pulled off the first few centimetres, stick the top of the frosting above the window with masking tape. 
A person using masking tape to peel the backing off a sheet of frosting

4Put the frosting onto the window

Fill your spray bottle with a mix of baby shampoo and water and spray the window with a generous coat. Wetting the window makes it easy to adjust where the frosting sits. Slowly peel the backing off the frosting and push it onto the glass. Once you've got the frosting in a good position, use the squeegee to push the liquid and the air bubbles out. Start from the middle and work towards the edges.
A person using a squeegee to push liquid and air bubbles from frosting on a window

5Trim the frosting

Once the frosting is flat on the window, use a sharp blade to give the edges a final trim. When you finish trimming the frosting, give it another pass with your squeegee to remove the last of the water. Once again, work from the middle out towards the edges.
A person trimming frosting along the edge of a window using a trimming knife
Health & Safety

Asbestos, lead-based paints and copper chromium arsenic (CCA) treated timber are health hazards you need to look out for when renovating older homes. These substances can easily be disturbed when renovating and exposure to them can cause a range of life-threatening diseases and conditions including cancer. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page.

When following our advice in our D.I.Y. videos, make sure you use all equipment, including PPE, safely by following the manufacturer’s instructions. Check that the equipment is suitable for the task and that PPE fits properly. If you are unsure, hire an expert to do the job or talk to a Bunnings Team Member.