Last Updated on October 26, 2026 by Royal Stone Care
Summer holiday memories are fading in the rear-view mirror, and the weather has turned chillier. That means it’s time to consider how to protect your timber decking during the coolest months of year. Like anything else, wooden decking needs proper care and maintenance to stay looking its best and retain its structural integrity. And, clearly, that’s especially true during the autumn and winter months.
That way, when spring and summer roll around once more, you’ll have a smart-looking, functional addition to your property. It’s somewhere you can relax, entertain and generally enjoy al fresco living.
So here’s how to make sure your decking remains a cherished element of your home for months and years ahead.
A thorough clean is a good start
Before you do anything else, clean your decking thoroughly. Over the summer, the timber has no doubt gathered dirt and grime, along with, quite possibly, mould or mildew. Get rid of these before wet conditions set in, to avoid long-term damage.
This doesn’t have to be difficult or complicated. Kick off with sweeping up superficial debris like twigs and leaves and so on, including anything which may have become trapped between the boards, since this can cause moisture retention. Next, wash the decking with a suitable cleaner, ideally an eco-friendly one designed for wood, and rinse thoroughly.
Inspect and repair
Check for indications of wear and tear and anything else you may need to sort out. That could include any loose boards which you may need to screw down, cracks and splinters, or any soft points in the timber which could indicate early stages of rot. (In the latter case, you’ll need to replace affected boards as quickly as possible.)
Appy your protective treatment
The application of a protective treatment is a key part of autumn and winter maintenance of your decking. Choose an oil, staining product or sealant to create an effective barrier against moisture, and help stop water from getting in and damaging your wood.
Apply evenly with a brush or roller across the decking’s whole surface. And be fussy about the end grains and any cut edges, which may be vulnerable to water penetration . Do this job on a dry day when no rain is expected, and allow the treatment to soak deeply into your wooden boards for maximum effectiveness.
Protection from the elements
If you can, think about covering your decking with a tarp or similar to minimise potential water damage. Equally, any gutters and downspouts nearby should be clean and working properly. You don’t want water pooling on your decking. If any ice or snow gets on the surface, clear it off right away – use a plastic shovel or broom. Other ideas include spreading sand over it, or using a de-icer.
Wooden decking: the do’s and don’ts this summer
Things NOT to do
- Don’t let dirt, leaves and other debris collect on your decking. This just encourages the growth of moss and mould.
- Don’t use chlorine-based bleach to clean the area – this spoil’s the timber’s natural colour and can harm its cellular structure.
- If you’ve washed the wood, or it’s rained, don’t oil the decking right away. Allow it to dry out thoroughly.
- Don’t use the wrong kind of wood treatment. To get the right product for your next treatment, understand the variety of wood your deck is made from, and how (and if) it has been treated previously.
- Don’t paint the decking, as it could soon become scruffy and may not withstand even basic wear and tear.
- If you’re using a high-powered pressure-washer, don’t do so without an appropriate washer nozzle. Applying too much pressure can damage your wood. Equally, remember to move the nozzle in the direction of the wood grain.
- Don’t assume that timber is maintenance-free if it has been pressure-impregnated. It still needs frequent cleaning, plus you should also oil it regularly with tinted oil to stop the timber from going grey – this also make it easier to clean.
- If you’re using any toxic treatment agents, don’t let them run off the deck into the immediate surroundings.
Things you SHOULD do
- Fix problems immediately – keep a constant eye out for loose screws or nails as well as rotting boards.
- Clean regularly to prevent mould and moss from growing. This includes regular brushing and deeper cleaning with water and detergent at least once a year.
- Treat your decking with tinted oil every year. This makes surface cleaning easier and protects from UV radiation and dirt.
- Have pot plants in saucers to keep water and soil off your decking boards.
- It’s a good idea to move furniture, rugs, pots and the like around pretty regularly so the sun doesn’t bleach them and, anyway, you’ll want to clean under the furniture.
- If your decking is older and incorporates many layers of treatment, or its surface is rough to the touch, do sand it before you oil it.
- Before you clean or oil the deck, protect nearby walls, tiles shrubs and so on with a cover.
- When brushing and sanding boards, do so parallel to the grain of the timber.
Planning ahead
Keeping your decking in good condition now is also about preparing for the year ahead and keeping it in decent nick so that when spring comes around again, it’s there for you to enjoy once more.
So have a proactive, regular maintenance regime and clean and treat your decking twice a year, say once in the spring and then again in autumn. Finally, when the time comes and your timber starts to show signs of heavy wear and tear, be prepared to upgrade with new boards .
Talk to Royal Stone Care
Royal Stone Care’s wood care services aim to help you get the most from your timber decking. So if you need expert help with wood repair, restoration or sanding in London, talk to the professionals.
