Decking is a fantastic addition to any garden, providing a stylish and practical space for relaxing, socialising, and outdoor dining. However, keeping your decking looking great requires regular maintenance and cleaning. Unfortunately, many homeowners unknowingly make mistakes that can damage their decking or leave it looking less than its best. In this blog, we’ll discuss the five most common decking cleaning mistakes and how to avoid them, ensuring your decking stays in top condition for years to come.

1. Using High-Pressure Washing Incorrectly
One of the most common mistakes people make when cleaning their decking is using a high-pressure washer without proper knowledge. While pressure washing can be effective for certain surfaces, using it on decking without care can cause serious damage.
The Problem:
High-pressure jets can strip away the protective sealant, splinter the wood, and even force water into the boards, leading to warping and rot. This is especially problematic with softer woods like pine or cedar.
How to Avoid It:
If you’re going to use a pressure washer, always use the lowest pressure setting and maintain a safe distance from the surface. Ideally, you should use a soft wash technique, which combines lower pressure with specialist cleaning solutions. Alternatively, leave it to professionals who know how to clean decking without risking damage.
The Best Solution:
Opt for professional softwashing services that safely remove dirt and algae without causing damage. Softwashing uses specially formulated detergents and low-pressure water to clean and protect your decking.
2. Choosing the Wrong Cleaning Products
Decking comes in various materials, from natural wood to composite, and each type requires specific care. One of the most common errors is using harsh or unsuitable cleaning products that can damage the decking material.
The Problem:
Bleach, acidic cleaners, or abrasive powders can strip colour, erode the protective coating, and even weaken the wood. In some cases, the use of the wrong cleaner can cause discolouration or leave behind residue that attracts more dirt.
How to Avoid It:
Always check the manufacturer’s guidelines to find out what cleaning products are safe for your type of decking. Avoid using generic household cleaners that may contain harsh chemicals. Instead, use specialist decking cleaners designed to be gentle yet effective.
The Best Solution:
Hire a professional cleaning service that uses decking-specific cleaning solutions. This ensures a thorough clean while protecting the integrity of your decking.
3. Ignoring Algae and Moss Build-Up
Over time, decking can become a haven for algae, moss, and lichen, especially if it’s in a shaded or damp area. Many homeowners overlook this problem until it becomes severe, but leaving algae to thrive can lead to more significant issues.
The Problem:
Algae and moss not only make your decking slippery and unsafe, but they can also penetrate the surface, weakening the wood and encouraging rot. Once moss takes hold, it becomes much harder to remove and can significantly reduce the lifespan of your decking.
How to Avoid It:
Regular maintenance is key. Sweep your decking frequently to prevent leaves and debris from collecting, and treat the surface with an anti-algae solution at the first sign of growth.
The Best Solution:
Arrange for a professional deep clean at least once a year. Experts use treatments to remove algae and moss effectively, leaving your decking safer and cleaner.
4. Neglecting to Rinse and Dry Properly
It might seem like a simple step, but many people forget to thoroughly rinse their decking after cleaning, or they fail to dry it correctly. This can lead to streaks, residue, and even water damage.
The Problem:
Leaving cleaning solution residue on your decking can make it sticky, attract dirt, and potentially damage the wood over time. Similarly, if the decking remains wet for too long, it becomes more susceptible to mould growth and warping.
How to Avoid It:
Always rinse your decking thoroughly after applying any cleaning solution. Use a garden hose to wash away all residues, ensuring a clean and residue-free surface. Once rinsed, allow your decking to dry completely before using it.
The Best Solution:
Professional cleaning services not only use the right products but also make sure your decking is properly rinsed and dried, reducing the risk of long-term damage.
5. Skipping Regular Maintenance
A common misconception is that decking only needs to be cleaned once a year. While an annual deep clean is essential, regular maintenance throughout the year will help keep your decking in prime condition.
The Problem:
Neglecting routine maintenance means that dirt, grime, and organic material accumulate, becoming harder to remove over time. Additionally, irregular cleaning can cause the decking to develop unsightly marks and slippery areas.
How to Avoid It:
Establish a regular cleaning schedule, particularly during autumn and winter when debris can build up quickly. Sweep your decking weekly, and hose it down regularly to prevent algae growth.
The Best Solution:
Consider booking a maintenance plan with a professional cleaning company. Regular check-ups and cleaning keep your decking looking great and prevent long-term damage.
Why Choose Servos Exterior Cleaning for Decking Maintenance?
At Servos Exterior Cleaning, we understand that maintaining your decking can be a challenge. With our professional softwashing services, we eliminate the guesswork and ensure that your decking is thoroughly and safely cleaned. Our team uses gentle techniques to remove dirt, algae, and moss without damaging the wood.
Our Decking Cleaning Services Include:
- Softwashing to prevent damage
- Removal of algae, moss, and mildew
- Application of protective treatments
- Thorough rinsing and drying to avoid residue
- Scheduled maintenance plans for year-round care
Contact Us for Professional Decking Cleaning
Don’t let common cleaning mistakes ruin the look and longevity of your decking. Trust the experts at Servos Exterior Cleaning to provide the highest standard of care. Call us today on 01745 289055 or email clean@servosuk.co.uk to schedule your professional decking clean.