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Problem Solver - Moisture
Other Problems
Timber to be coated should have a moisture content close to what it will be in service. Below 14% for interior timber and between 15-18% for exterior timber is recommended, and 5% maximum in most masonry. You can obtain a moisture meter to check the content of a surface. Certain finishes do have moisture permeability allowing moisture to escape.
Preparation
A moisture meter is ideal when it comes to measuring the water content in wood, plaster and concrete.
Wash surface down with detergent or sugar soap
Abrade with 100 grit abrasive paper to remove any loose or flaking areas and to create a key
Basecoat
Apply a suitable primer
Apply a suitable undercoat
Topcoat
Apply a suitable topcoat
Timber to be coated should have a moisture content close to what it will be in service. Below 14% for interior timber and between 15-18% for exterior timber is recommended, and 5% maximum in most masonry. You can obtain a moisture meter to check the content of a surface. Certain finishes do have moisture permeability allowing moisture to escape.
Preparation
Wash surface down with detergent or sugar soap
Abrade with 100 grit abrasive paper to remove any loose or flaking areas and to create a key
Basecoat
Apply a suitable primer
Apply a suitable undercoat
Topcoat
Apply a suitable topcoat