Ronseal Ultimate Protection Decking Oil Dark Oak 5L

Ronseal Ultimate Protection Decking Oil Dark Oak 5L

Key Features

• Lasts twice as long as standard decking oils — based on independent weathering data, so you treat less often and spend more time enjoying your deck
• Dark oak shade — a rich, deep brown tone that enhances and deepens the natural colour of your deck boards
• Deep-penetrating formula nourishes the wood from within, preventing it from drying out, cracking, and splitting
• Protects against UV fading, water penetration, greying, scuffs, and heavy foot traffic
• Mould resistant — helps prevent the build-up of mould and algae on the deck surface
• Rainproof in just 90 minutes — no need to wait for a long dry spell before you start
• Excellent coverage — up to 8m² per litre; a 5L tin covers approximately 40m² in two coats
• Suitable for both ridged and smooth wood decking
• Two coats recommended for maximum protection and depth of colour

Frequently Asked Questions

Will the dark oak shade suit my deck?
The dark oak shade adds a rich, deep brown tone to timber decking — ideal if you want to deepen the colour of lighter boards or refresh the look of weathered decking. The effect will vary depending on the existing colour and condition of your deck. Always test on a small, hidden area first.

How long does it last compared to regular decking oil?
Ronseal Ultimate Protection lasts twice as long as standard decking oils based on weathering data, meaning fewer re-applications over time — saving you time, effort, and money in the long run.

How much do I need?
Coverage is up to 8m² per litre on smooth decking — ridged or rougher timber will absorb more and reduce coverage. A 5L tin covers approximately 40m² in two coats. Measure your deck area before buying to make sure you have enough.

How do I apply it?
Apply with a brush, roller, or paint pad to a clean, dry, and prepared deck surface. Apply two coats, allowing the first to dry fully before the second. The oil is rainproof within 90 minutes under normal conditions.

Do I need to prepare my deck first?
Yes — clean the deck thoroughly to remove dirt, algae, and any old flaking coatings before applying. Sand rough or weathered areas and allow the timber to dry fully. Proper preparation ensures even penetration and a longer-lasting result.

Is it mould resistant?
Yes — Ronseal Ultimate Protection Decking Oil contains mould-resistant properties to help keep the deck surface cleaner for longer between treatments.