How to use Polycell Exterior Polyfilla

1. Mix approximately 4½ parts filler to 1 part water.

2.  For very porous surfaces, use slightly more water and moisten the area before applying.

3. Mix to a smooth paste. It will remain workable for around 15 minutes. 

4. Fill the gaps until the filler is slightly proud of the surrounding surface, then smooth level with a filling knife or spatula.