before using window care dry flex 1
Check the moisture content of the surface (maximum 18%) and the condition of the wood with the REPAIR CARE Wood Condition Meter.
Ensure that all decayed or excessively soft wood, and weathered, damaged or burnt wood is completely removed until a sound wood substrate is achieved
All surfaces must be free of dust, dirt, grease, raised wood fibres and general surface contamination.
Remove any paint coatings from the surfaces to be treated and sand back to bare shiny wood.