Recognising the Signs That Your Merbau Deck Needs Refinishing

Merbau decking is a popular choice for outdoor spaces due to its durability and rich, warm appearance. However, even the best Merbau timber requires maintenance to keep it looking its best. Whether you have Merbau decking 140 x 19, 90 x 19, or 70 x 19, recognising the signs that it needs refinishing can help extend its life and keep it beautiful.

Here are key indicators that your decking Merbau needs some attention.

Fading Color

One of the most noticeable signs that your Merbau timber decking needs refinishing is a loss of colour. Over time, exposure to sunlight and weather can cause the rich, brown tones of Merbau wood to fade. If your deck has become dull or grey, it’s time to consider refinishing.

Splintering Wood

Splintering is another clear sign that your 140 Merbau decking needs refinishing. As the wood ages and loses its protective finish, it becomes more susceptible to drying out and splintering. Regular refinishing can prevent this, keeping your deck smooth and safe.

Water Absorption

A well-maintained Merbau deck should repel water. If you notice that water is no longer beading on the surface and instead is being absorbed into the wood, this is a sign that the protective sealant has worn off. Water absorption can lead to swelling, warping, and other damage, making refinishing crucial.

Visible Wear and Tear

Over time, regular use can lead to visible wear and tear on your decking Merbau. Look for signs such as scratches, gouges, or general wear on the surface. These imperfections not only affect the appearance of your deck but can also compromise its structural integrity if addressed.

Mildew and Mold Growth

Mildew and mold thrive in damp conditions, and a deck that is not properly sealed can become a breeding ground for these fungi. If you see black spots or green growth on your Merbau decking, it’s a clear indication that it needs to be cleaned and refinished to prevent further damage.

Rough Texture

Run your hand over the surface of your Merbau timber decking. If it feels rough or abrasive, it’s a sign that the wood fibers are breaking down due to exposure and lack of protection. A smooth, even texture is a hallmark of well-maintained decking.

Checking and Cracking

Checking (small cracks on the surface of the wood) and larger cracks are indicators that your Merbau decking is drying out and needs refinishing. These cracks can allow moisture to penetrate deeper into the wood, leading to more extensive damage over time.


Keeping an eye out for these signs can help you maintain the beauty and longevity of your Merbau decking. Whether your deck is 140 x 19, 90 x 19, or 70 x 19, refinishing at the right time can save you from more extensive repairs down the line. For high-quality refinishing products and expert advice, trust Outdeco Living to help you keep your Merbau timber in top condition.

By proactively addressing these issues, you can ensure that your Merbau decking remains a stunning and durable feature of your outdoor space.