Moulded Plastic Outdoor Table Legs Replacement

Moulded Plastic Outdoor Table Legs Replacement: A Comprehensive Guide

Outdoor tables are a staple of patios, decks, and gardens, providing a space for dining, socializing, and relaxing. However, the environmental exposure inherent in outdoor use can lead to damage, particularly to the table legs. Moulded plastic, a common material for outdoor furniture due to its durability and affordability, is not immune to degradation. This article provides a comprehensive guide to replacing moulded plastic outdoor table legs, covering material selection, common damage types, the replacement process, and preventative maintenance.

The choice of replacement legs will significantly impact the longevity and aesthetic appeal of the table. Understanding the properties of different plastic types and the common modes of failure for table legs is therefore essential. The cost-effectiveness of moulded plastic is a key driver behind its popularity, but selecting the right type of plastic and employing proper maintenance techniques can maximize the lifespan of outdoor furniture and minimize the need for frequent replacements.

Understanding Moulded Plastic Types

Numerous types of plastic are used in the manufacturing of outdoor furniture, each with its own strengths and weaknesses. Selecting the appropriate plastic for replacement table legs requires careful consideration of factors such as UV resistance, impact strength, and weight capacity. Some of the most common types of moulded plastic used in outdoor furniture production include:

Polypropylene (PP): This is a widely used thermoplastic polymer known for its chemical resistance, fatigue resistance, and weldability. Polypropylene is also relatively inexpensive, making it a common choice for mass-produced outdoor furniture. However, it can be susceptible to UV degradation over time, leading to fading and embrittlement. Stabilizers are often added during the manufacturing process to mitigate UV damage, but these offer only partial protection.

Polyethylene (PE): Similar to polypropylene, polyethylene is another versatile thermoplastic polymer. There are several variations of polyethylene, including high-density polyethylene (HDPE) and low-density polyethylene (LDPE). HDPE is often preferred for outdoor furniture due to its higher strength and greater resistance to UV degradation compared to LDPE. Polyethylene is also recyclable, making it an environmentally conscious choice.

Polyvinyl Chloride (PVC): PVC is a rigid thermoplastic polymer known for its excellent weathering resistance and durability. It is commonly used in structural applications, such as pipes and fencing, but can also be found in outdoor furniture. PVC is resistant to moisture and insect damage, making it a good choice for humid environments. However, it can become brittle over time, especially when exposed to extreme temperatures.

Acrylonitrile Butadiene Styrene (ABS): ABS is a strong and impact-resistant thermoplastic polymer. It is known for its good dimensional stability and resistance to scratching. ABS is often used in applications requiring high impact resistance, such as automotive parts and protective housings. While it offers excellent physical properties, ABS is less resistant to UV degradation than polyethylene or PVC.

Recycled Plastic: Many manufacturers are now using recycled plastic in the production of outdoor furniture. Recycled plastic can be made from a variety of materials, including post-consumer and post-industrial waste. The properties of recycled plastic can vary depending on the source material, but it generally offers good durability and weather resistance. Using recycled plastic is an environmentally responsible choice that helps to reduce waste and conserve resources.

When selecting replacement table legs, it is important to consider the specific requirements of the table and the environmental conditions in which it will be used. For tables that will be exposed to direct sunlight for extended periods, a UV-resistant plastic such as HDPE or PVC is recommended. For tables that will be subjected to heavy use or harsh weather conditions, a strong and impact-resistant plastic such as ABS or recycled plastic may be a better choice.

Identifying Common Damage Types in Moulded Plastic Table Legs

Various factors can contribute to the damage and eventual failure of moulded plastic outdoor table legs. Understanding these common damage types can aid in identifying the root cause of the problem and selecting the appropriate replacement parts. Some prevalent forms of damage include:

UV Degradation: Prolonged exposure to ultraviolet (UV) radiation from the sun can cause the plastic to break down at a molecular level. This process, known as UV degradation, leads to fading, discoloration, and embrittlement of the plastic. The surface of the plastic may become chalky or powdery, and it may become more prone to cracking and breaking. UV degradation is a common problem for outdoor furniture, especially in regions with high levels of sunlight.

Impact Damage: Accidental impacts, such as dropping the table or bumping it against other objects, can cause cracks, chips, or even complete breakage of the table legs. Moulded plastic, while durable, can be susceptible to brittle fracture under impact, especially at low temperatures. The severity of the impact damage will depend on the type of plastic, the force of the impact, and the temperature of the environment.

Stress Cracking: Constant stress and strain on the table legs, such as uneven weight distribution or repeated movement, can lead to stress cracking. Stress cracks are small, hairline cracks that can gradually propagate over time, weakening the structural integrity of the table leg. Stress cracking is often accelerated by exposure to chemicals, such as cleaning agents or fertilizers.

Moisture Damage: While most moulded plastics are resistant to moisture, prolonged exposure to water can still cause damage. In some cases, water can seep into the plastic through cracks or porous areas, leading to swelling, warping, or even fungal growth. In colder climates, water that freezes inside the plastic can expand and cause cracking.

Chemical Exposure: Exposure to harsh chemicals, such as cleaning agents, solvents, or fertilizers, can damage the plastic and weaken its structure. Some chemicals can react with the plastic, causing it to dissolve, soften, or become brittle. It is important to use care when cleaning outdoor furniture and to avoid exposing it to harsh chemicals.

By carefully inspecting the damaged table legs, it is possible to identify the most likely cause of the failure. This information can then be used to select replacement legs made from a more durable material or to implement preventative measures to protect the new legs from similar damage.

The Moulded Plastic Table Leg Replacement Process

Replacing moulded plastic outdoor table legs is a relatively straightforward process that can be accomplished with basic tools and minimal experience. However, it is important to follow the correct steps to ensure a secure and stable repair. This section outlines the typical procedure for replacing table legs, including preparation, removal of the old legs, and installation of the new legs.

Preparation: Before beginning the replacement process, gather the necessary tools and materials. This typically includes a screwdriver or socket wrench (depending on the type of fasteners used), a hammer (if needed to remove stubborn legs), a measuring tape, and the replacement table legs. It is also recommended to wear safety glasses and gloves to protect your eyes and hands.

Removal of Old Legs: The first step is to remove the damaged table legs from the table frame. This typically involves unscrewing or unbolting the legs from the frame. If the fasteners are corroded or seized, you may need to use penetrating oil or a specialized tool to loosen them. In some cases, the legs may be glued or welded to the frame. If this is the case, you may need to use a saw or grinder to carefully cut the legs off. Take care not to damage the table frame during this process.

Frame Inspection and Preparation: Once the old legs have been removed, inspect the table frame for any damage or corrosion. If necessary, clean the frame with a wire brush or sandpaper to remove any rust or debris. It is also important to ensure that the frame is level and stable. If the frame is warped or damaged, you may need to repair it before installing the new legs.

Installation of New Legs: The next step is to install the new table legs onto the table frame. This typically involves aligning the legs with the mounting points on the frame and securing them with screws or bolts. Make sure that the legs are properly aligned and tightened to ensure a stable and level table. If the legs are not pre-drilled for fasteners, you may need to drill pilot holes to prevent the plastic from cracking.

Leveling and Adjustment: Once the new legs are installed, check the table for levelness. If necessary, adjust the legs using shims or adjustable feet to achieve a level surface. This is particularly important if the table will be used on an uneven surface, such as a patio or deck.

Finishing Touches: After the legs have been installed and leveled, inspect the repair to ensure that everything is secure and stable. If necessary, touch up any scratches or blemishes with paint or a plastic repair kit. You may also want to apply a sealant or protectant to the legs to help protect them from the elements.

By following these steps carefully, you can successfully replace the moulded plastic table legs and restore your outdoor table to its original condition. It is always recommended to consult the manufacturer's instructions for specific guidance on replacing the legs for your particular table model.

Preventative Maintenance for Moulded Plastic Outdoor Furniture

While replacing damaged table legs is a viable solution, preventing damage in the first place is always the best approach. Implementing a regular maintenance routine can significantly extend the lifespan of moulded plastic outdoor furniture and minimize the need for repairs. Several preventative measures can be taken to protect outdoor furniture from the elements and prolong its useful life.

Regular Cleaning: Regularly cleaning outdoor furniture helps to remove dirt, debris, and other contaminants that can damage the plastic. Use a mild soap and water solution and a soft brush or cloth to clean the furniture. Avoid using harsh chemicals or abrasive cleaners, as these can damage the plastic surface. Rinse the furniture thoroughly with clean water and allow it to dry completely.

UV Protection: Protecting outdoor furniture from UV radiation is essential to prevent fading, discoloration, and embrittlement of the plastic. Consider using a UV protectant spray or sealant to help shield the furniture from the sun's harmful rays. You can also position the furniture in a shaded area or use patio umbrellas or covers to provide additional protection.

Winter Storage: In colder climates, it is recommended to store outdoor furniture indoors during the winter months. This helps to protect the furniture from freezing temperatures, snow, and ice, which can cause cracking and other damage. If you do not have space to store the furniture indoors, cover it with a waterproof tarp or cover to protect it from the elements.

Proper Weight Distribution: Avoid placing excessive weight on the table or chairs, as this can lead to stress cracking and other damage. Distribute weight evenly across the surface of the furniture to minimize stress on any one particular area. If you are using the table for heavy items, such as potted plants, consider using a table with a stronger frame or leg support.

Prompt Repair of Minor Damage: Addressing minor damage, such as small cracks or chips, promptly can help prevent it from escalating into larger problems. Use a plastic repair kit or epoxy to repair any small cracks or chips in the plastic surface. This will help to prevent water from seeping into the plastic and causing further damage.

By implementing these preventative maintenance measures, you can significantly extend the lifespan of your moulded plastic outdoor furniture and minimize the need for costly repairs. A little bit of care and attention can go a long way in preserving the beauty and functionality of your outdoor living space.