Sealing a Wooden Sundeck by The Wood Joint – Durban

Sealing a wooden sundeck can be a time-consuming task. One needs to ensure that the sealer gets in between the gap on the deckboards so as to seal both edges of each deckboard. Balustrades can also be very time-consuming as there are many corners and tight gaps to get in to.

We use Timberlife Satin Wood Base 28 which is oil based and very viscous. It has zero wax content so that nothing dries on the surface of the timber making future maintenance easy and very cost-effective. You simply clean and re-apply. No more sanding.

One way is to paint it on using a brush. Another is to use a sponge to rub it on. And yet another is to spray it on. Each method of application has its pros and cons. I’ll list each one here: –

Brushing it on

  • Very time-consuming
  • The brush tends to flick the sealer because it so viscous so when brushing up towards the wall one needs to ensure it doesn’t flick on the wall
  • Fairly accurate as you can get the sealer where you want it

Sponging it on

  • Quite messy so wear gloves
  • No flicking but lots of dripping as the sponge gets squeezed. Use plastic beneath if you don’t want it to spoil the paving, but it is ok if it lands on the deck as you will sponge that too pretty soon
  • Fairly accurate and much quicker than brushing
  • You may need to touch up with a brush in the corners
  • Can’t get successfully into the gaps between deckboards
  • You can use a sponge roller for the surface


  • Very messy so mask the walls or use a piece of cardboard to protect the wall. Have thinners or turps on hand to clean it off the wall quickly if it gets on the wall. If the wall is PVA, be very careful, but it cleans off quite easily from acrylic paints and windows
  • Watch the wind, it can cause havoc
  • Penetrates everywhere
  • Use a garden sprayer on the finest setting it has

So there are many ways to seal your wooden deck if using a viscous sealer such as Timber Life Satin Wood Base 28 or Woodoc Deck Dressing. Use a combination of them and you will have your deck sealed in no time. Be careful of spraying though. Use lots of plastic, watch the pool, watch the wind. But even with these few pitfalls, it is much, much faster than brushing. Watch the video above of us spraying a deck. For a free no obligation quote, call us on 082 496 5444 or use the form below.

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