Can You Caulk Between Deck Boards?

If there are gaps in the installation that are particularly large, dirt and other residue can easily become trapped within them. A quick and simple solution to sealing these spaces is to caulk between the deck boards. Silicone caulk is an airtight sealant that is water-resistant and very subtle when applied.

How do you fill gaps in deck boards?

While you might be tempted to fill in gaps in your decking with wood filler or caulk, the natural movement of the boards can eventually cause the materials to break loose and make the gaps even worse. However, you can use rope to easily fill the gaps.

What do you use to Gap deck boards?

During installation, make sure to keep your decking material in a cool, dry place where it will not be exposed to excess moisture and expand, which can affect the spacing between the boards. Use spacers, a sixteen penny nail, or a pencil to help ensure even spacing between all the boards.