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Cleaning a wooden shed comes down to two things: 1.) using the right products and tools, and 2.) knowing where to focus your efforts.
Timber can be sensitive to certain cleaners, and some tools can be too harsh on the surface. You won’t always need to clean the entire structure, though. There are usually three areas that need extra attention. Use this guide to get started!
How to Clean Green Off a Wooden Shed
Go for something gentle, such as a mix of water and white vinegar. This solution always works and is easy to make yourself. Steer clear of harsh chemicals like bleach, as they can cause damage. A soft brush or sponge works well for scrubbing without causing damage, even for stubborn spots.
Note: That green layer is often mould, mildew, or algae, which thrive in damp and shady areas. You’ll usually find it on lower walls or the shaded sides where moisture lingers. It also can appear inside, especially if the interior is exposed to high humidity or moisture.
When cleaning the lower walls, try not to let water gather near the shed base. Too much moisture down there can soak into the wood or foundation, causing rot, mould, or structural damage. Shaded areas might need a bit more scrubbing to get rid of green growth, but go easy. Avoid being too harsh to protect the wood from wear.
How to Clean Mud Off a Wooden Shed
Again, the lower walls of your shed (exterior) are prone to getting muddy. This happens when rainwater splashes soil up from the ground. If the shed is near garden beds or pathways, the risk increases—but regular cleaning helps.
Loosen the mud with a garden hose or a bucket of water. Soapy water works well for tougher spots, as does the classic water and white vinegar solution. Scrub the mud, ideally with a sponge. Avoid using a pressure washer, as it can strip away the wood’s protective finish, although this will be less of a concern for pressure treated sheds.
Note: Mud forms when rainwater mixes with dirt or soil around the base of your shed. If the ground is a bit uneven or doesn’t drain well, water can splash dirt onto the walls. If you don’t deal with it, the mud can build up and leave stains on the wood, making it more challenging to clean.
How to Clean Roof Felt
The good thing about quality felt roofing shingles is they don’t need constant cleaning. However, over time, debris like leaves and moss can build up, especially with standard felt.
A simple water and baking soda mix works well. Use a soft cloth or mop with a long handle to wipe off dirt or moss without being too rough on the felt. Baking soda helps break down the build-up. Just wipe away the mess and rinse with water to keep it clean.
Tip: Don’t use too much water when cleaning the roof felt. Excess moisture can seep into the shed, leading to mould or mildew on the interior walls, especially if it’s not well-ventilated. If you’re unsure about ventilation, have a look at some guides on ‘Shed Ventilation: How-to and Things to Consider’.
Round-up
When cleaning your wooden garden storage, a soft brush and sponge are your best bet. DIY solutions like water and white vinegar or baking soda work a treat. Focus on the lower walls where green spots and mud tend to build up. As for the roof felt, keep it clear of debris and avoid using too much water, as it could seep through and affect the interior walls.
For more upkeep tips, here’s something worth checking out: How To Improve the Structure of Your Wooden Garden Shed
