How To Seal New Decking Boards
Once you new decking boards are installed the next step is to apply the finish to seal the deck and complete the job.
Many imported hardwood decking timbers like merbau and balau have a high content of naturally occurring water-soluble resins called tannins. Leave newly laid decking unfinished for up to two months so the tannins can be released then wash with a deck-cleaning product to de-oil the surface of the timber.
Sand the timber boards and apply a finish to seal the deck.
TIP A deck cleaning product can remove tannins from the surface fibres of the boards