What grain to choose for sanding wooden doors and windows?

What grain to choose for sanding wooden doors and windows?

Question from Marylise:

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Answer: use three different grains

Hello Marylise, to sand your windows and doors, you will need to use sandpaper from the 3 different grains: the coarse grain first then the medium and finally the small one for the finish. Use a special exterior varnish for the exterior of windows. It contains flexible alkyd resins to absorb the dimensional variations of the wood. For the interior of your home, you will use a professional varnish which will protect and embellish all the woods by bringing the decorative touch of your choice (light oak tones, natural, teak, colorless ...). Find out all the editorial questions