To give your deck a polished and professional look, you'll want to fill in any holes left by erroneously placed screws as well as the small gaps above screws that you have countersunk into the deck.

Should you sink deck screws?

Conclusion: Deck Screws Should Be Counter Sunk Never Flush

Installing deck screws slightly below the surface accommodate the shrinking of the decking as the boards dry.

Can you cover screw holes in wood?

In general, there are several different ways to cover screw holes in wood. If you plan to paint the wood, you can cover them with wood filler. ... Both involve using a wood dowel plug. In total, three processes are covered that will allow you to discreetly cover a screw hole in just about any wooden surface.