
Sun-damaged plastic chairs can be unsightly, but there are several ways to restore them to their former glory. The sun's ultraviolet (UV) radiation breaks down the structure of the plastic, causing it to fade and lose its vibrancy. Regular cleaning with soap and water is a great way to prevent mould and mildew and extend the lifespan of plastic chairs. For deeper cleaning, a mixture of vinegar and water can be applied to the chair and wiped off after 10 minutes. Protective coatings, such as UV-resistant sealants or weatherproof sprays, are essential to shielding chairs from sunlight, moisture, and temperature variations. Applying a product such as WD-40, linseed oil, or petroleum jelly can also help restore the colour and shine of sun-damaged plastic chairs.
How to restore sun-damaged plastic chairs
| Characteristics | Values |
|---|---|
| Cause of damage | Ultraviolet (UV) radiation from the sun |
| Other causes of degradation | Rain, wind, fluctuating temperatures, dirt, dust, mildew, mould, oxidation, and chalkiness |
| Prevention | Bring plastic items inside, use a quality plastic protectant, apply UV-resistant sealants, store in a shaded area, use chair covers |
| Cleaning products | Mild detergent and water solution, bathroom cleaner, bleach, lemon juice, vinegar, soap and water, petroleum jelly, linseed oil and mineral spirits |
| Other products | WD-40, heat gun |
| Other methods | Painting, applying a protective coat |
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What You'll Learn

Clean with soap and water
Sun-damaged plastic chairs can be cleaned with soap and water. First, take the plastic chairs outdoors and give them a thorough dusting to remove any dirt or other particles. Then, with a mixture of warm water and soap, wash the surface with a cloth or sponge. Use a mild detergent and ensure you remove all dirt, dust, debris, and grime. You can also use a brush for deeper cleaning, but do not use a hard brush as it may leave scratches on the chair. Rinse away the soap and then use a dry cloth to wipe the chair.
If your plastic chairs have mildew, you can use a mixture of vinegar and water to clean them. Mix vinegar and water in a bowl, apply it to the chair, and keep it for about 10 minutes. Then, wipe it with a dry cloth, splash water on the chairs, and rinse them. Lemon juice is also effective in killing mildew. Wipe or spray lemon juice on the area, let it sit for 10 minutes, and then wash the chair with soap and water.
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Use a plastic restorer
One way to restore sun-damaged plastic chairs is to use a plastic restorer product. WD-40 Multi-Use Product is one such example. This can be sprayed onto the plastic furniture and rubbed in with a clean, dry cloth. It is important to perform this task outdoors to avoid inhaling any harmful fumes. Gloves, a mask, and eye protection should also be worn. Before applying the plastic restorer, the chairs should be thoroughly cleaned and dried. This can be done by first dusting the chairs to remove any particles, and then washing them with a mixture of warm water and soap, or a mild detergent, and rinsing them with water. For tougher stains, a scrubbing brush can be used, although a hard brush may cause scratches. Bleach, lemon juice, and vinegar are also effective at removing mildew. After cleaning, the chairs should be dried before applying the plastic restorer. Once the product has been applied, any excess should be wiped away.
Plastic restorers can be used to protect plastic chairs from further sun damage. A protective coat is essential to safeguard plastic chairs from the damaging effects of sunlight, moisture, and temperature variations. A UV-resistant sealant or weatherproof spray can enhance the chair's ability to withstand harsh outdoor conditions. This will prevent further fading and discolouration. When not in use, plastic chairs should be stored in a shaded area or covered to shield them from direct sunlight. Regular cleaning will also help to extend the lifespan of plastic chairs and maintain their appearance.
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Apply a protective coat
To protect your plastic chairs from sun damage, you must apply a protective coat to safeguard the revitalised surfaces of the chairs. This protective coat will ensure the chairs' resilience and longevity as weather-resistant outdoor furnishings. It will play a crucial role in shielding the chairs from the damaging effects of sunlight, moisture, and temperature variations, thereby preserving their vibrant appearance and structural integrity.
There are several products available to protect your plastic chairs from sun damage. You can use a UV-resistant sealant or weatherproof spray to enhance the chairs' ability to withstand harsh outdoor conditions. This protective layer will also aid in removing any oil or grease stains and protect any metal parts from rusting.
WD-40 is a widely available product that can be used to protect plastic chairs from sun damage. It was originally designed to create a rust-proofing layer on the outside of missiles. You can spray it on your plastic furniture and rub it in with a clean, dry cloth. Make sure to perform this step outdoors to avoid inhaling harmful fumes.
Another option is to use a quality plastic protectant to prevent UV damage. You can also use a mixture of vinegar and water to remove mould from the plastic chairs. Apply the mixture to the chair, let it sit for about 10 minutes, and then wipe it with a dry cloth. After this, splash water on the chairs and rinse them.
Regular cleaning is also crucial for keeping restored plastic garden chairs in top condition. Use a mild detergent and water solution to wipe down the chairs, focusing on removing any dirt or grime. Bring your plastic chairs inside as much as possible to prevent sun damage.
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Prevent UV damage
Sun damage to plastic chairs is caused by ultraviolet (UV) radiation, which breaks down the structure of the plastic, causing it to lose its colour and vibrancy. Constant exposure to rain, wind, and fluctuating temperatures can accelerate the degradation process, resulting in a dull and tired aesthetic.
To prevent UV damage to plastic chairs, follow these steps:
Bring plastic chairs inside: If possible, bring your plastic chairs inside to prevent sun damage. This may not always be convenient, especially if you have large pieces of plastic patio furniture.
Use a plastic protectant: Apply a quality plastic protectant to your plastic chairs to prevent UV damage. Look for products specifically designed to protect plastic items from sun damage, such as UV-resistant sealants or weatherproof sprays. These products will help shield your chairs from the sun's harmful UV rays and extend their lifespan.
Regular cleaning: Regular cleaning is crucial for maintaining the condition of your plastic chairs. Use a mild detergent, soap, or a specialised plastic cleaning agent, and water to wipe down the chairs, focusing on removing any dirt, dust, or grime. Regular cleaning helps prevent the growth of mould, mildew, and discolouration, which can cause irreversible damage to the chairs over time.
Apply a protective coat: After cleaning and treating your plastic chairs, consider applying a protective coat specifically designed for outdoor use. This will safeguard the surfaces of the chairs, ensuring their resilience and longevity. Choose a UV-resistant sealant or a weatherproof spray to enhance the chairs' ability to withstand harsh outdoor conditions, including sunlight, moisture, and temperature variations.
Store in a shaded area: When not in use, store your plastic chairs in a shaded area or use covers to shield them from direct sunlight. This will help prevent UV damage and maintain the vibrancy and longevity of the chairs.
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Remove mildew
Sun-damaged plastic chairs can be a breeding ground for mildew, which thrives in humid and moist environments. To remove mildew, you can try the following methods:
Use a mould-removing product
Purchase a mould-removing product specifically designed for plastic surfaces. For example, Concrobium Liquid Mould Remover can be used to tackle mildew on plastic patio furniture. Always read the label to ensure the product is suitable for plastic and follow the manufacturer's instructions.
Use vinegar
Spray white distilled vinegar directly onto the mould or mildew. Let it sit for about an hour, then rinse or wipe the furniture with a damp cloth.
Use bleach
Diluted bleach can be effective in eliminating mould and mildew. Add 1/2 cup of bleach to a bucket or sink filled with lukewarm or cool water. Use a sponge or cloth dipped in this solution to scrub the affected areas. Rinse the furniture with clean water and dry thoroughly. Be cautious when using bleach, as it may harm the colour of some fabrics or surfaces. Always test on a small, inconspicuous area first.
Use lemon juice
Place your plastic furniture in direct sunlight. After it has been exposed to the sun for a while, apply some lemon juice to the affected areas. Allow the furniture to air-dry in the sun, but do not leave it for too long, as the heat can cause plastic to crack. Finally, wash the furniture with soap and water.
Use detergent and water
For solid plastic furniture, use a sponge or cloth dipped in warm, soapy water to gently scrub away mould and mildew. For plastic wicker furniture, use a hose or pressure washer to deep clean the crevices where mildew often builds up.
Prevent mildew buildup
To prevent mildew from returning, ensure your plastic furniture is thoroughly dried after cleaning. Avoid placing your furniture in areas with poor ventilation or frequent moisture, such as near a swimming pool or in the splash zone of your lawn sprinkler. Regular cleaning can also help keep mildew at bay.
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Frequently asked questions
To restore sun-damaged plastic chairs, you can use a plastic restorer like WD-40 Multi-Use Product, or linseed oil mixed with mineral spirits. First, clean the chairs with soap and water, then apply the product.
Regular cleaning is crucial to maintaining plastic chairs. You can use a mild detergent and water solution to wipe down the chairs, focusing on removing any dirt or grime. You can also use vinegar, lemon juice, or bleach to remove mildew.
To prevent sun damage, apply a protective coating specifically designed for outdoor use, such as a UV-resistant sealant or weatherproof spray. You should also store the chairs in a shaded area when not in use.
To remove mould and mildew, mix a solution of vinegar and water, apply it to the chair, and wipe it off after 10 minutes. Then, splash water on the chair and rinse. You can also use lemon juice or bleach.











































