How Often Should You Oil Your Deck?

If your deck is starting to look a little tired, dull, or grey, you might be wondering - how often should I be oiling it? The short answer: once a year.

The long answer: it depends on how much sun, rain, and foot traffic your deck gets as well as the type of timber and oil you use. Oiling your deck regularly keeps it protected from harsh Australian conditions, extending its lifespan and maintaining that rich, healthy timber look we all love.

What Happens If You Don’t Oil Your Deck?

Firstly, let's talk about hat happens if we don't oil our deck. Not oiling your deck might seem harmless, but skipping it can lead to long term damage and degradation.

1. UV Damage = Grey, Dry, and Cracked

Australia’s strong sun breaks down timber fibres, leading to fading, cracking, and splintering. Moisture loss can cause the boards to warp or crack. Oiling keeps the wood flexible and protected - like SPF for your deck.

2. Water + Timber = Trouble

Without oil, rain and dew soak into the wood. That trapped moisture encourages mould, mildew, and rot. Deck Doc’s lanolin-based oil creates a breathable barrier that repels water.

3. The Repair Bill Hurts

Unmaintained decks often need costly repairs or even full replacements. Regular oiling with a quality product like Deck Doc saves you money and stress in the long run, keeping your timber strong for years to come.

Container of Deck Doc premium decking oil on a wooden surface

Wooden deck with horizontal slats against a white wall

How Long Does Deck Oil Last?

That depends on a) how much sun exposure your deck gets b) the type of timber and c) how “thirsty” your wood is.

Typically, a good coat of Deck Doc Timber Oil lasts 12–18 months on most decks. The bonus? Top-ups are simple. Just clean the surface and reapply - no sanding needed.

How to Know When It’s Time to Re-Oil

Your deck will tell you when it’s thirsty.

Look out for a) fading or loss of colour b) water soaking in instead of beading on the surface and c) a dry, rough texture underfoot.

If any of these sound familiar, it’s probably time for some deck maintenance.

How to Apply Deck Oil

Oiling doesn’t have to be complicated. Here’s how to get the best results:

1. Clean the Surface

Start with Deck Doc Timber Cleaner to remove dirt, mould, and old residues. Let the deck dry completely for 24-48 hours before oiling.

2. Oil with Confidence

Apply one even coat of Deck Doc’s lanolin-based oil using a decking applicator or mop. Let it absorb, then wipe off any excess after 30–60 minutes to prevent stickiness.

3. Let It Breathe

Allow 24–48 hours for full curing, depending on weather. One coat is often enough, but if your timber is particularly dry or old, apply a second coat for extra nourishment.

Regular oiling is the easiest way to keep your deck looking stunning and strong. With Deck Doc, one coat a year can make all the difference. It protects against UV, moisture, and everyday wear while enhancing the natural beauty of your timber.

👉 Key Takeaway: Oil your deck once a year (or sooner if it’s in full sun or near the coast). Your deck will thank you with years of durability and a beautiful finish that lasts.