How To Remove Algae From Fences Permanently
Are you wondering why your fencing is turning green? Finding a permanent solution to the problem can be difficult, which is why we have put together this expert guide to removing algae from fences permanently, so you can ensure your fencing stays looking at its best all year round.
In this guide we will cover:
- What causes algae to grow
- How to prevent algae growth
- How to remove & prevent algae
What Causes Algae To Grow On Fences?
Algae is a green, fungal-like growth that forms on timber in damp conditions. It thrives where moisture is high, especially in shaded areas, though sunlight can also encourage growth. Wood is particularly prone because it’s porous and absorbs water easily, allowing algae to develop when left untreated.
How Do You Prevent Algae from Growing?
Algae will keep returning unless the moisture is controlled. The most effective way to prevent it is to stop the wood from absorbing water. You can do this by using a breathable, water-repellent treatment. Paints and stains are not fully waterproof; only water-repellent products make water bead and run off before it can soak in.
Emperor Exterior Wood Waterproofer creates a highly water-repellent, breathable finish that prevents up to 96% of water absorption. It bonds into the wood for inviable, long-lasting protection that won’t peel or flake. It is proven by independent 25-year weathering tests and is backed by a lifetime guarantee, delivering long-term protection without regular reapplication.
How To Remove & Prevent Algae On Fencing
Cleaning
Start by removing surface dirt from the fence. For heavy build-up, use a pressure washer and allow the wood to fully dry, as this can saturate the timber. For lighter dirt, a stiff brush and hot soapy water will be enough.
Next, treat the fence with Emperor Exterior Cleaner to kill algae, moss and lichens. Apply it evenly using a brush, roller or pump sprayer, allow it to dry for around 2 hours, then rinse the fence to remove any remaining residue. This prepares the wood for further protection.
Treating
Once the fence is clean and free from algae, you can then apply the protective treatment. Emperor Exterior Wood Waterproofer is a one-coat treatment that can be applied by brush, roller or pump-sprayer. It is a thin liquid that simply needs to be applied at 5m² per litre and allowed to dry for 1 hour at 20°C or longer if the temperatures are lower.
Read more: How to apply
Frequently Asked Questions
Other than algae, what other signs are there that my fencing is becoming saturated with moisture?
If you have any bare, untreated outdoor timber, the likelihood is that it will be absorbing moisture from wind-driven rain. Aside from organic growth, other tell-tale signs that high levels of moisture are present in the fencing are rotting, splitting of the wood, but most importantly the discolouration of the wood. This discolouration comes in the form of the wood darkening, which can leave the wood patchy and looking tired.
How often do I need to re-apply the treatment to my fence?
Emperor Exterior Wood Waterproofer has been proven in independent testing to withstand any weather conditions for 25 years, however it will likely far exceed this as after the 25 year testing was completed, there were no signs of deterioration in performance. We also offer a 10 year manufacturer guarantee on the product.
What is the difference between algae and other organic growth?
Algae is a slimy substance that creates a green layer on the surface of the timber. Mildew is a mould like fungal growth, often in the form of black spores. Lichens can vary from species to species, but most often are a silver or green crust, while moss is a commonly found organic growth that forms dense, fluffy blooms across the timber.
How often will I need to clean algae from my fence if I don’t treat it?
If you decided that you simply wanted to clean the algae from the wood rather than prevent the source of the moisture, the algae would be likely to grow back within 6 months. This regular maintenance cycle is what leads to many homeowners taking permanent measures to prevent the re-growth of algae on fencing.
We hope we have answered any questions you may have had regarding not only how to remove algae from fences, but how to reduce the risk of it reappearing. If you have any other questions, feel free to get in touch with our team of experts who are on hand to assist you. Contact them today by emailing [email protected] or calling them on 01254 936121.
