How to Remove Mould from Timber and Wood Trim

Mould or mildew on wood is not uncommon when there are moisture and damp present in your home.

The most common areas to find mould on wood are in the basement or on the ceiling.

Erasing and eliminating mould from wood is essential because, if left untreated, it can spread and cause damage. Removing mould from wood is not difficult, and the following steps should be helpful.

Select A Cleaning Solution

Many commercial anti-mould products are available pre-mixed.

In order to remove and eradicate mould from wood, you’ll need to make sure you’re using a suitable solution.

To remove mould, says Mould Removal Sydney, from raw timber you’ll need a solution that penetrates the wood to kill it.

If the wood has been finished or painted timber, a milder cleaning solution is all that is necessary, as the goal is simply to remove it, not kill it.

Large-Scale Removal

Wherever you see a large amount of mould you’ll also find significant moisture. You can’t just deal with the mould, you’ll also need to deal with the moisture.

Such large-scale mould problems will extend further than just interior timbers and trim, so seek a professional to inspect the area to work out the best way forward.

Cleaning surfaces of trim and other timbers will only be a very short-term solution if the moisture has caused rot and spongy timbers.


If the chosen solution is a strong one with pungent odours, take protective measures before you begin.

Taking care by wearing a mask, goggles, and rubber gloves; it’s imperative that you keep yourself safe from inhaling the fumes.

And where possible, especially if your cleaning solution has strong or harsh fumes, ensure the room is well-ventilated.


Before using the solution test it on a hidden area to make sure it doesn’t cause colour fading, then apply the solution to the rest of the mould with a spray bottle.

Make sure that you use only the recommended quantities as an over application could increase the dampness, perpetuating the problem further.

Post Application

Once the mould has been removed from the timber or wood, clean the area and remove anything which may have had contact with the mould.

If you’ve had to sand wood back, or if you’ve applied solutions to heavily moulded wood trim and timber you may need to repaint surfaces.

If repainting is required, use a regular latex paint that contains a mildewcide. This way you’ll help stop future mould growth.

Remember, if the moisture returns then the mould will most certainly follow. This is a problem you want to tackle once and fix it for good.

The final step is to ensure the wood is dry and then keep the timber dry moving forward.

If you live in a location that is often humid, then it’s necessary to have a good ventilation system to keep the wood dry.

Remember, if the mould has made its roots deep inside the wood you might need to sand back the wood to kill it and therefore remove the mould entirely.

Mould can be a serious health risk and devalue the price of your property and possessions.

Using our suggestions above could save you significant financial outlay for labour, but more importantly, they’ll keep your home mould free.