You will need the following items.
A pair of gloves, a small scale, a scrubbing brush, an empty container, two cleaning rags, 1 L of warm water, oxalic acid, and teak wood oil.
Dissolve 100 grams of oxalic acid into the warm water. Apply the mixture generously.
Let sit between 30 minutes and 2 hours depending on the condition of the aged wood. If the wood still has gray streaks, you can create a paste with oxalic acid and scrub the surface again.
When the product has acted, rinse thoroughly.
Let completely dry. Apply teak wood oil generously.
Let dry from 8 to 16 hours and reapply. Treat again when the water stops beading.
The delay can vary depending on sun exposure.
