Painter Trade Test Practice Questions - South Africa Artisan Trade Test - Painter Exam

Why are knots in new softwood sealed with a knotting solution (shellac knotting) before priming?

To make the wood harder To seal in resin/sap that would otherwise bleed through and discolour the paint film To fill nail holes To darken the timber grain

Correct Answer:

To seal in resin/sap that would otherwise bleed through and discolour the paint film

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