what lumber to use for outdoor furniture

Lumber selection for outdoor furniture

Whether you are planning to build a porch swing, an Adirondack chair, or a picnic table, choosing the right type of lumber is an essential step. Not all types of wood are suitable for outdoor use, as they may decay, rot, warp, or crack due to exposure to the elements.

Hardwood vs. softwood

The first decision you need to make is whether to use hardwood or softwood. Hardwoods, such as teak, mahogany, cedar, and redwood, are denser, heavier, and more resistant to water and insects than softwoods, such as pine, spruce, or fir. However, hardwoods are more expensive and harder to come by, especially if you want sustainably harvested wood. Softwoods are more readily available and affordable, but they may need to be treated to prolong their lifespan.

Pressure-treated vs. natural wood

Another consideration is whether to use pressure-treated or natural wood. Pressure-treated lumber has been infused with chemicals that protect it from decay, fungus, and insects. This makes it a popular choice for outdoor structures like decks and fences, but may not be the best option for furniture that will come into direct contact with skin and food. Moreover, pressure-treated wood may contain toxic substances that can leach into the soil or air over time. Natural wood, on the other hand, has a more rustic and authentic look, but requires more maintenance to prevent weathering and decomposition.

All-weather hardwoods

If you want the durability and beauty of hardwoods without the high cost and environmental impact, consider using all-weather hardwoods like acacia, eucalyptus, or shorea. These types of wood are specially engineered to withstand moisture, UV rays, and temperature fluctuations, making them ideal for outdoor furniture that can last for years without fading or warping. All-weather hardwoods are also more resistant to scratches, dents, and stains than natural wood, making them suitable for high-traffic areas like patios and poolside decks.

Maintenance tips

No matter what type of lumber you choose, proper maintenance is essential to keep your outdoor furniture looking and functioning its best. Here are some tips to follow:

• Seal or stain your wood to protect it from water, sunlight, and insects. Choose a product that is specifically designed for outdoor use and follow the manufacturer's instructions.
• Clean your furniture regularly with mild soap and water. Use a soft brush or sponge to remove dirt, grime, and bird droppings. Avoid using harsh chemicals or pressure washers, as they can damage the wood or remove the finish.
• Cover or store your furniture during the winter or rainy season to prevent damage from snow, ice, and hail. Alternatively, you can use waterproof covers or tarps to protect your furniture while it is outside.
• Avoid placing your furniture in direct sunlight or shade. Exposure to extreme heat or cold can cause the wood to crack or fade over time. Try to find a spot that gets partial sunlight and has good ventilation.

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