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Exterior stains for timber doors and joinery

(including garage doors)

Resene Popular Paint Systems –
Exterior and interior woodcare© (stains and clear finishes): training notes

This web page is an edited version of the Resene Best System Selling training notes provided to Resene staff and is provided to enable you to gain a greater understanding of the substrates and paint systems you may encounter in your decorating project. It is impossible to cover all decorating scenarios in a single document, so if you are in doubt about any aspect of your project please contact Resene for assistance.

How to stain exterior doors and joinery (including garage doors)

Note: Refer to the PDF flowchart for a visual of the steps below:


  1. Wash using Resene Timber and Deck Wash.

  2. Lightly sand using 150 grit garnet to remove any loose timber fibres and to arris any sharp edges.

  3. Finish options:

Previously coated - refer notes

  1. Treat moss and mould using Resene Moss & Mould Killer.

  2. Wash and scrub using Resene Timber and Deck Wash.

  3. Lightly sand using 150 grit garnet to remove loose timber fibres and stain residue. Refer to notes if film forming stain or varnish used.

  4. Finish options:

    • Deteriorated timber and/or failed coatings:
      • Sand to remove previous coating and return to bare timber (consider stripping using Sea 2 Sky - refer appendix).
      • Refer to exterior varnished.
    • Sound condition:

Exterior stains


Key accessories - essential to complete the job

Add ons - to make job easier or quicker

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Colours shown on this website are a representation only. Please refer to the actual paint or product sample. Resene colour charts, testpots and samples are available for ordering online.   See measurements/conversions for more details on how electronic colour values are achieved.