Once you are happy with the positioning of your film, liberally spray the surface of the film. This will act as a lubricant for your squeegee or felt edged tool.
Starting in the centre at the top edge and using firm pressure, push the water out from behind the film towards the side edge, then repeat in the opposite direction. Then from the centre of the top edge push the water down towards the bottom edge so you have a ’T’. Your film should now be securely in place.
If you are applying a solar or safety film, apply as much pressure as possible to remove the water. You may need a specialist squeegee for this process.
Starting at the top and working down to the bottom, push all the water out towards the edges. Repeat on the other side.
Run a credit card and a sharp craft knife down each edge and across the bottom to trim off any excess film. The thickness of the card will allow for a small gap for any excess liquid to be squeegee’d out. Once the film has been trimmed, wet the surface and run the squeegee over again using the same technique as before.