How to Treat Redwood Garden Furniture

Redwood garden furniture can cope very well with British weather, but the correct treatment depends on how the timber was supplied. The biggest mistake is assuming every piece of redwood needs the same oil or preservative schedule.

Quick answer: first identify whether your furniture is pressure treated, factory finished or untreated. Pressure-treated redwood already has preservative protection against decay. Untreated redwood normally needs an exterior preservative or suitable protective finish. Furniture supplied with an oil-based finish should be maintained with the compatible oil recommended for that product.

How Detailed Outdoor Living's redwood ranges differ

For Detailed Outdoor Living customers, this distinction is particularly important because our two principal redwood specifications are designed differently.

Always follow the care information supplied with the individual product. Our Treatment and Maintenance Advice page contains the wider guidance for our ranges.

Is Scandinavian redwood good for outdoor furniture?

Yes. Quality Scandinavian or Swedish redwood is a practical timber for substantial outdoor furniture when it is correctly selected, constructed and protected. It offers an attractive grain, good workability and a strong balance between durability and cost. Its outdoor performance, however, depends heavily on treatment and construction rather than the timber name alone.

For a broader comparison with teak and other species, see What Wood Is Best for Garden Furniture?.

How to treat untreated redwood garden furniture

If the timber is genuinely untreated, start with a product specifically suitable for exterior timber. Depending on the desired finish, this may involve an exterior wood preservative followed by a compatible oil or stain. Check the manufacturer's instructions carefully because products and coating systems differ.

Do not apply treatment over dirty or damp timber. Brush off loose debris, wash with a mild cleaning solution where required and allow the wood to dry thoroughly before coating.

How to maintain Classic Redwood furniture

Classic Redwood has an oil-based finish and should be refreshed using the recommended furniture oil. For Detailed Outdoor Living products, annual application forms part of the care requirements associated with the Classic Redwood guarantee.

Clean the furniture first, allow it to dry, and apply the oil in accordance with the instructions on the bottle or tin. A cloth makes the process straightforward on many surfaces. The treatment helps maintain the finish and its water-repellent performance.

How to maintain Heritage Tanalised furniture

Heritage Tanalised redwood has preservative protection introduced through pressure treatment. That means you should not automatically apply annual preservative simply because generic garden-furniture advice says all wood needs it.

Keep the furniture clean, remove leaves and debris that hold moisture against the timber, and inspect it periodically. If you later want to change or refresh its appearance with a decorative coating, make sure the product is compatible with pressure-treated exterior timber and that the wood is sufficiently dry.

Oil, stain or preservative?

Exterior oil is useful where the product specification calls for an oil finish or where a compatible oil is being used to maintain appearance and water repellency. Exterior stain is primarily useful when you want to alter or retain colour while adding surface weather protection. Wood preservative is particularly relevant to untreated timber that does not already have preservative protection.

For a treatment-selection guide rather than a redwood-specific maintenance guide, read What Should I Treat Wooden Garden Furniture With?.

How to apply treatment properly

Choose a dry period and follow the coating manufacturer's temperature and drying requirements. Apply thin, even coats in the direction of the grain. Pay attention to exposed end grain and horizontal surfaces, and avoid creating heavy sticky build-up.

Never coat damp timber or mix incompatible finishes without proper preparation. If an old coating is flaking or failing, prepare the surface before applying a new system.

How often should redwood garden furniture be treated?

There is no universal timetable. The correct interval depends on the treatment system, exposure and manufacturer guidance. For Classic Redwood from Detailed Outdoor Living, follow the annual oiling requirement. Heritage Tanalised has a different maintenance regime because its preservative protection is pressure applied.

For other redwood furniture, inspect the surface rather than relying on a generic calendar. Fading, loss of water repellency and a dry-looking finish can indicate that a surface treatment needs attention.

Winter care for redwood garden furniture

Remove fallen leaves and organic debris, particularly where they can trap moisture around joints or legs. Keep furniture on a firm, well-drained surface rather than in standing water. If you use a cover, choose a breathable design and allow airflow rather than wrapping damp timber tightly in plastic.

Can grey or tired redwood be restored?

Often, yes. Surface greying is a normal weathering process and does not automatically mean the timber is structurally damaged. Cleaning and light preparation can improve tired-looking redwood before an appropriate compatible finish is reapplied.

Rot, significant splitting or loose structural joints are different issues and should be assessed rather than hidden beneath another coating.

Related redwood and maintenance guides

Browse our wood treatment products, read How to Protect Wooden Garden Furniture, or compare timber choices in our Garden Furniture Wood Types Guide.