When installing decking boards, you can either use nails or screws. Both of them have advantages and disadvantages. Understanding each type of fastener will help you decide on what to use.

Is it better to nail or screw decking boards?

The Consensus: For a deck build it’s best to use a combination of nails and screws. … Screws are superior for laying down the decking. They hold things flush better and have a better fastener/tensile strength, which keeps boards from popping up over time.

Can you use a nail gun on decking boards?

Use a nail gun primarily for affixing the decking and trim (or fascia) boards, with stainless-steel-finish nails to avoid rusting. For adequate penetration, nails should be one-and-a-half inches longer than the boards.

What kind of nails do you use for decking?

The best nails for decking are stainless steel nails as they offer the greatest resistance to rust with minimum discoloration to woods such as cedar. However, stainless steel nails are considerably more expensive than other nails.

Should there be a gap between decking boards?

Proper wood deck board spacing should have at least a 1/8 inch gap after the decking has dried out. If you install your wood or treated deck boards while they are still wet boards, then they should be attached without a gap between them.

What can I use for deck boards?

Redwood, cedar, and cypress, as well as the exotic species, are good choices, but since most decking boards from domestic woods are sapwood and not rot-resistant, you should treat them. For the deck surface, you can use 2x4s, 2x6s, or 5/4x6s.

How long should decking nails be?

The length of the nail depends on the thickness of the material being fastened. A good practice is to use nails at least double the length of the thickness of the wood – 1½” thick lumber, use 3” (10d) to 3½” (16d) log nails. Common nails have a wider diameter than box nails and may split 5/4” deck boards.

How long should deck board screws be?

Most decking screws are 8-gauge and, while 2 1/2 inches is the minimum length needed to hold decking boards to the joists, 3-inch screws are commonly used to provide extra holding power against the upward pressure of shrinking or warping boards. Specialty decking materials have different requirements.

How do you fill space between 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.

Can you use a nail gun for composite decking?

You should also never use a nail gun on composite products. Nail guns tend to cause splitting and cracking in composite boards.

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Can you use a framing nailer to build a deck?

Nail guns works just fine for constructing the framing — better than screws and faster than a hammer! But don’t use it for installing the deck boards themselves. Use deck screws that are approved for the decking and the framing material that you are using.

Can you reuse old decking?

It’s not advisable for any wood — unless it’s treated — to be buried, and decking is no exception, but you can still use it for borders, fencing, accents along flower beds, benches and outdoor craft items like animated figures, playhouses, windmills or those little water well imitations.

Can you install new deck boards over old?

Installing decking over old decking will drastically reduce the lifespan of the material. The joints between the two materials will readily trap water in wet environments. This contact area should be limited only to the top of the joists, leaving most of the decking exposed on both sides.

What happens if you don't leave gaps in decking?

Without the right deck spacing, the boards may expand, cup, and buckle out of place. … There is no reason to put a gap between the ends (also known as butt ends or butt joints) of wood deck boards. Wood, both softwood and hardwood, is dimensionally stable in length regardless of temperature, humidity or moisture content.

Do decking boards expand?

Any type of decking board will expand and shrink, whether it’s wood, plastic, or composites. … However, they don’t change in size as much as wood or plastic. Wood fibres hold the shape when the composite undergoes thermal expansion, while the plastic fibres do the same when moisture is involved.

Which side of a deck board faces up?

Lay deck boards so that the best-looking face is facing up! Wood is stable when its moisture content is held above 30%(fiber saturation point). As wood dries below 30% it shrinks. Wood shrinks and swells twice as much in the direction parallel to the growth rings as it does perpendicular to the growth rings.

How do I make sure deck boards are straight?

1. Let your boards acclimate. Before you install your deck, your boards need to acclimate to their new environment. …
2. Use white chalk. …
3. For cutting, use a sharp blade with a carbide tip. …
4. Flatten the joists. …
5. Test your screws. …
6. Remove any existing decking.

Do deck boards need to be pressure treated?

As long as there’s a good chance that moisture can reach the wood, it should be pressure treated. This is why the International Building Code requires that siding and structural lumber used for the last six inches of the structure above the ground is pressure treated.

Should you use pressure treated wood for a deck?

Pressure-treated lumber is the logical choice for the structural part of your deck—the posts, joists, beams and other members you normally don’t see. Pressure-treated lumber can support more weight and span longer distances than cedar, redwood or other woods commonly used for building decks.

Can I use pressure treated wood for decking?

In all, pressure treated wood, like anything, has its good qualities and its not-so-good qualities. But, with excellent features such as its resistant to fungal decay and termites as well as its attractive price-point, pressure treated wood is an outstanding choice to use for the construction of your deck.

Do I need joist hangers for decking?

Are Joist Hangers Necessary? No, joist hangers are not necessary.

Which side of deck board goes down?

The main thing to know is how to place the deck boards properly. This then leads us to the most debated question about installing deck boards: crown up or down. The direction affects how the boards shape over time – cupping or crowning. Deck boards should crown up – bark side down.

How often do you screw decking?

What is this? You should use two screws at each point that the deck board crosses a joist to hold the boards firmly in place. Three screws should be used to secure the decking to rim joists.

What is the gap between decking boards UK?

You need an expansion gap of 5-8mm between the boards. If you are going to build your decking next to a house then make sure it’s 150mm below the damp-proof course and that you don’t cover any air bricks. Try to plan your deck to fit only whole boards, to avoid having to awkwardly cut a board lengthways to fill a gap.

What length decking screws should I use UK?

Screws or Nails? We would recommend using deck screws to fix your deck boards down, ensuring that the screw length is at least 2.5 times the thickness of the board to be fixed.

Can you fill cracks in deck boards?

Cracks: Fill and seal. Although cracking on a deck isn’t attractive, it’s usually just a normal sign of aging. If the cracks are less than six inches long, all you need to do is fill them in with latex wood filler and then finish off the deck with sealant.

Why do deck boards crack?

Constant exposure to moisture and heat causes wood deck boards to crack, and small or hairline cracks are an unavoidable consequence of your deck’s aging process. The wood gets wet, soaks up the water, expands and then drys out, contracting and shrinking, causing cracks in the surface of the wood.

What screws do I need for decking joists?

You need a different type of screw for each part of your deck. An 8 gauge, 2.5” coated deck screw is most commonly used when fastening deck boards to joists. For deck framing, structural wood screws such as Simpson SDS 1.5” screws work with joist and stringer hangers, as well as post/beam brackets.

What screws are best for decking?

A good all-around choice is #10 decking screws—generally in 2 1/2- to 3 1/2-inch lengths. Decking screws are sharp, tapered, self-sinking, and coated for corrosion resistance. With a cordless drill/driver, you can drive them about as fast as nails.

Do you need to predrill deck screws?

Deck screws installed in the field, not close to the board’s end or edge, need not be predrilled. Predrilling is required near the end of deck boards to make room for the screw. As the screw is acting like a wedge, driving between the wood fibres. That screw pushes against the decking, splitting open the board.