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Exterior wood
Always test on a small area prior to major application
as well as the seasoning of the end grains
No tip design
CooVar Patent Knotting Size:500ml Exterior woodCoo Var Patent Knotting is a low viscosity shellac based product. Use on knotted or resinous wood to prevent staining of future paint films. Patent knotting, also known as knotting solution or knot sealer, is a shellac based solution used to seal knots in wood. It prevents the resin or sap from bleeding through the paint or varnish, ensuring a smooth and blemish free finish. Why do I need to use patent knotting on wood knots? Wood knots can exude
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