If you are one of the lucky ones who own authentic wooden shutters - whether part of a restored neoclassical, a stone country cottage or a traditional house - you know their unmatched charm. Wood breathes, has character, smells beautiful and gives a warmth no industrial material can fully replicate.
But this beauty comes at a price: relentless weather damage. The scorching Greek sun dries out the wood fibres, while winter rain and moisture cause swelling, mould and rot.
Many homeowners spend their weekends sanding and painting, only to see the varnish peel again the following spring. Why does this happen? Because, more often than not, they use the wrong products. Let’s look at the correct, professional maintenance method so your wooden shutters can last literally a lifetime.
If your shutters are peeling, cracking and flaking, the varnish choice is to blame.
In the past, we used to coat wood with thick, glossy film-forming varnishes that create a plastic-like crust. The problem? Wood expands and contracts with heat and moisture. The rigid crust cracks, water gets underneath, gets trapped and rots the wood from within. Result: peeling every 1-2 years, requiring a full strip-back.
For exterior use, always choose penetrating stain varnish (water- or solvent-based). These do not form a “skin” on the surface. They penetrate deep into the wood pores, nourish the wood, protect against UV and let it “breathe”. When they wear, they simply fade - without peeling! The new coat is applied directly over the old one, with no stripping needed.
For a job that lasts, follow these steps (ideally spring or autumn, in the shade).
Never try to paint them while hanging. Remove the shutters from their hinges and lay them on two trestles in a shaded, well-ventilated area. Remove metal hardware (handles, latches) or mask it carefully with painter's tape to avoid paint drips.
If the old varnish is peeling, it must come off completely until the clean, bare wood is revealed. Start with coarse sandpaper (No 60-80) using an orbital or palm sander. Once the old paint is gone, move to medium sandpaper (No 120) to smooth out scratches. Finish with fine sandpaper (No 180-220) for a velvet-like surface. Always follow the grain, never sand across it. Wipe thoroughly with a slightly damp cloth to remove all dust.
Most people skip this step! Before any colour, soak the bare wood with a clear fungicide/insecticide stain primer. This liquid penetrates deep into the fibres and kills woodworm, fungi (black stains) and mould spores. Apply one generous coat by brush and let it dry fully according to the manufacturer's instructions.
Now the wood is ready to “drink” the colour. Stir the stain varnish thoroughly (in your chosen shade - walnut, oak or chestnut). Apply the first coat with a quality brush following the grain. Let it dry, then light-sand (No 240) to knock down raised fibres, and apply the second coat. A third coat may be needed for maximum UV protection.
If you followed the stain-varnish process correctly, future maintenance is a breeze!
In 2, 3 or 4 years (depending on how much sun or north wind they face), the shutter will simply look a little “dull”. No deep stripping required! Clean it, give it a light sand, and apply one coat of stain varnish for a refresh. The whole job takes just a few hours per pair of shutters.
If you want to be done once and for all with maintenance chores, replacing with aluminium wood-effect (sublimation) shutters eliminates all future sanding and painting - forever. The sublimation technology reproduces the exact grain and texture of real wood, so they are visually indistinguishable. Read our related article to see why more and more homeowners are making the switch.
💡 Summary: Wooden shutter maintenance is a "ritual" that, when done right (with stain varnish, not film-forming varnish), gives decades of life to your exterior joinery.
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