Design and Technology – Textiles | e-Consult

Wood:

• Durability: Moderate. Susceptible to rot, warping, and insect infestation if not treated.
• Weather Resistance: Poor without treatment. Requires regular sealing or painting to protect from rain, sun, and frost.
• Maintenance: High. Requires regular cleaning, sanding, and re-treatment with sealant or paint.
• Cost: Generally low to medium, depending on the type of wood.
• Suitability: Can be suitable if properly treated and maintained. Attractive aesthetic. However, the maintenance requirements are a significant drawback for an outdoor bench.

Metal (e.g., Aluminium or Steel):

• Durability: High. Resistant to rot, warping, and insect infestation. Steel can be prone to rust if not treated.
• Weather Resistance: Good, especially aluminium which is naturally corrosion-resistant. Steel requires protective coatings (e.g., paint, galvanization).
• Maintenance: Low to medium. Requires occasional cleaning. Steel may need repainting to prevent rust.
• Cost: Medium to high, depending on the type of metal and the complexity of the design.
• Suitability: A very good option for an outdoor bench due to its durability and weather resistance. Aluminium is particularly advantageous.

Plastic (e.g., Polypropylene or HDPE):

• Durability: Moderate. Can become brittle with age and exposure to sunlight.
• Weather Resistance: Good. Resistant to rain, sun, and frost.
• Maintenance: Low. Easy to clean.
• Cost: Low to medium.
• Suitability: A viable option, particularly for benches where low maintenance is desired. However, the long-term durability and aesthetic may not be as desirable as wood or metal. Consider UV stabilisers to improve resistance to sunlight degradation.

Conclusion: The best material depends on the priorities. Metal (especially aluminium) offers the best combination of durability, weather resistance, and low maintenance, making it the most suitable choice for a long-lasting outdoor garden bench. Wood can be suitable with proper treatment, but requires more upkeep. Plastic is a good low-maintenance option, but may not be as durable or aesthetically pleasing.