Knowledge Builders

how far apart should cedar deck boards be spaced

by Ludwig Boyle Published 2 years ago Updated 2 years ago
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Cedar deck board spacing should be 1/8″.
These are the two objects that you can wedge between the boards to make sure that you are getting the correct spacing. If you like to use technology then you can use a deck spacer to make your life easier.
Jun 21, 2016

Full Answer

Why is spacing important on deck boards?

Why is it important to allow water to move through a deck?

What is the best deck material for Colorado?

Is spacing better for decks?

Can you use a deck spacer?

Can you use galvanized screws on cedar?

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How much space should I leave between deck boards?

0:331:53Building Tips for Pressure Treated Wood: Proper Board Spacing and ...YouTubeStart of suggested clipEnd of suggested clipThat has not been kiln dried after treatment is also known as wet treated lumber and will shrinkMoreThat has not been kiln dried after treatment is also known as wet treated lumber and will shrink more over time knowing. This information will help determine how much the decking will shrink as

Should deck boards have a space between them?

0:010:53How to Space Deck Boards - YouTubeYouTubeStart of suggested clipEnd of suggested clipWe want to answer a commonly asked question. So you can build your project right the first time.MoreWe want to answer a commonly asked question. So you can build your project right the first time. Stick building Questions frequent our inbox and whether they're from a pro or DIY er one question we've

Should pressure treated deck boards be spaced?

0:481:53Building Tips for Pressure Treated Wood: Proper Board Spacing and ...YouTubeStart of suggested clipEnd of suggested clipAnd how much space you need to keep between the deck boards. Keep in mind that in colder seasons.MoreAnd how much space you need to keep between the deck boards. Keep in mind that in colder seasons. And climates deck boards may retain more moisture in general kiln dried decking should be placed 1/8

How do you work out deck board spacing?

0:322:28How Much Decking Do I Need? - YouTubeYouTubeStart of suggested clipEnd of suggested clipIf you're looking to purchase 16-foot deck boards take your square footage amount divided by 7.2 toMoreIf you're looking to purchase 16-foot deck boards take your square footage amount divided by 7.2 to find the number of 16-foot boards you'll need be sure to round up to the closest.

Is it better to nail or screw deck boards?

Decking screws are better than nails when building a deck. Decking screws hold down your decking more securely than nails and will stop your decking from warping. Also, you can easily remove screws for deck maintenance without causing damage.

Does cedar expand when wet?

Tim Inman: Yes, the cedar will expand when it increases in moisture content, just as all woods will do.

Which direction should decking boards run?

What is the correct way to lay decking? Any decking board manufacturer or professional will tell you: “The proper way to install a decking board is ridge side down.” The ridges are designed to allow for airflow, to stop moisture sitting in the ridge, and allow for a stronger structure.

Should you pre-drill deck boards?

0:171:29Wise Up! The Importance of Pre-Drilling Hardwood DeckingYouTubeStart of suggested clipEnd of suggested clipEvery time pre-drilling the hardwoods is always going to give you the best looking and longestMoreEvery time pre-drilling the hardwoods is always going to give you the best looking and longest lasting results when installing hardwood. Decking. Now if you've done your homework you know that

How do you seal the space between deck boards?

4) How to Fill Gaps in Decking After you clean the deck, cut a sufficient amount of natural fiber rope that will fit the length of each gap. Don't use synthetic rope because stain and paint won't adhere to the material. Make sure the rope is slightly wider than the gap so you'll have a tight fit.

What can I do if the boards on my deck are too close together?

To widen the gap between the deck boards run the saw forward lightly touching one side, then check for clearance. If the space is still too narrow, make a second pass on the other side. You may have to make several passes using the same process to widen the space between the deck boards for desired spacing.

Do you leave a gap between composite deck boards?

0:020:36Trex® Top Tip Gapping the board - YouTubeYouTubeStart of suggested clipEnd of suggested clipA common mistake when installing treks is butting up the boards end-to-end gapping is very importantMoreA common mistake when installing treks is butting up the boards end-to-end gapping is very important to aid drainage. And airflow and to leave room for the natural movement the composite materials.

How do I fill the gaps in my wood deck?

0:131:18Prep Matters Video 3 of 4: Sand & Caulk - YouTubeYouTubeStart of suggested clipEnd of suggested clipOr wider for help try the crack test if two quarters fit inside caulking fill the large cracks withMoreOr wider for help try the crack test if two quarters fit inside caulking fill the large cracks with an exterior paint a bowl sealant call scrape away the excess. And allow to dry rescue.

What is the best spacing between deck boards?

Generally, an acceptable gap between deck boards is between 1/8 inch and 1/4 inch. Both sizes have their pros and cons. The eighth-inch spacing provides for a safer surface for walking. Smaller gaps mean fewer trip hazards or opportunities for high heels or a child’s fingers to get caught in the cracks.

What if Space Between Decking Boards is Too Wide?

Despite your best efforts to get the right gap between each deck board, you’ve ended up with gaps that are too wide. What do you do? Is ripping up the boards and doing a full reinstall your only option?

What does it mean when a deck has a gap?

Smaller gaps also mean your deck won’t drain quite as well as a deck with larger gaps. It is also more likely to trap debris. Smaller gaps mean more boards, which means more weight on your deck. Quarter-inch spacing does allow for better ventilation, drainage and debris removal.

Why do you need a gap in a deck?

While the gap in your deck boards may seem like a small step in a deck project, the gap size you choose serves a significant purpose. Decking board spacing provides airflow through your deck, allowing evaporating air to escape. This helps to keep your deck’s framework dry and rot free.

How much gap between composite deck boards?

Like real wood, composite boards will also expand and contract as the humidity changes. Leave at least a 1/8″ gap between composite boards. Determining the gap with pressure-treated decking can be a bit more complicated.

What happens if you don't space your deck?

Deck spacing isn’t anything to take lightly. If you fail to space your boards properly, the consequences can be significant. Poorly spaced boards can lead to damage to deck boards and even your deck framing, or it may leave gaps that may make your deck unsafe for walking. Quick Navigation [ show]

Why do deck boards expand?

Because decks are outside, they are continuously exposed to changing humidity. During more humid seasons, like summer, decking will soak up more moisture, causing the boards to expand.

How much space between deck 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. The gap will be created as the fresh wood slows dries and contracts within the first month.

What Should Deck Board Spacing Be?

From natural and pressure-treated decking options to the rich, versatile colors of composite deck boards; learning how to install deck boards properly can truly make your outdoor space shine to its fullest. Whether attaching the deck boards via wood deck screws or color-matching deck fasteners, or using a proprietary hidden deck fastener system; learning what deck board spacing should be is crucial.

What is the purpose of spacing between deck boards?

Spacing between deck boards provide a few critical functions. The primary function is to drain water from the deck. Gaps that are narrow (1/8”), can catch debris, specifically on top of the joists, and can be difficult to clean out. Larger gaps, such as 1/4”, allow more of this material to fall through the deck.

What kind of wood is used for decking?

People used redwood, cedar, pressure-treated pine and even some exotic hardwoods. Wood has some beautiful natural characteristics, but also requires some maintenance. Decking comes in many forms these days. There are over a hundred different man-made decking products on the market today.

What is man made decking made of?

There are over a hundred different man-made decking products on the market today. Most are composed of wood-plastic composite, capped composite, vinyl and aluminum. They offer low-maintenance and a variety of appearances. If playback doesn't begin shortly, try restarting your device.

Why is decking important?

Your choice in decking is very important because it is the surface you will see, walk on, maintain and have to live with for years to come. Do some research on our site to find a material that lends itself to your tastes.

Is ventilation necessary for a deck?

Ventilation below the deck is also enhanced by the gaps between the deck boards, but this is only important in ground-level decks. For lumber decking, both the moisture content of the lumber and the environment its installed in matter.

How long should a deck spacer be?

Make a few to allow you to space the full length of the board. The board needs to be 3-4″ (75-100mm) long. Long enough to easily grab but short enough as not to overhang the decking board.

What happens when you put decking on the bark side up?

As it dries, the longer cells will shrink more, pulling the edges of the deck down and the water off the decking. When installed bark side up, the boards will cup, pool water and rot.

Why do you need to gap between deckings?

It is not good for the decking to pool water, which will increase rot and make your deck unsafe. Gapping between the decking allows for excess rain to drain off the deck.

What is 5/4 decking?

5/4″ decking was an innovative idea to reduce decking costs while improving appearances of wood decking. And caught on it has, now the majority of wood decking I install is 5/4″. I am not alone, as now most new wood decks are 5/4″. But the spacing of 5/4″ decking is a little different than traditional decking.

How many boards will a six board gap grow?

A simple story of multiplication. Six boards gapped large will grow less than 30 boards. Small adjustments will blend into the design. A large wedged decking board at the wall is ugly, and small adjustments can avoid that.

Can you cut 5/4 decking through a tree?

Yes, a lot of 5/4 decking boards are cut through the heart of the tree. So on one end of the decking, the rings may be smiling, but the other end is frowning. I get it, but you need to try at least. The good news is with edge screwing or face screwing.

Is it better to install decking boards tighter than final design?

All softwood decking will shrink. Therefore it is best to install decking boards tighter than your final design to account for shrinkage. With SPF treated decking, tight is best. With cedar with its lower shrinkage rate, a small 1/16″-1/8″ gap (2-3mm) works better.

Why spacing deck boards?

Makes for Easier Cleaning. Another benefit to proper deck board spacing is that the spaces help make it easier to sweep away debris from the surface of the decking. While debris may not seem like a big deal, it will take away from the aesthetic of your deck.

How to determine spacing for wood boards?

The best way to decide the appropriate spacing for your boards is to check the moisture content of the wood before installation. The amount of moisture in the wood will let you know whether the wood will expand or shrink right away. As the humidity increases, the moisture content increases which causes the wood to expand.

Why Is Deck Spacing Necessary?

The most important reason to have a spacing gap is to allow the boards the room to expand and contract naturally.

What is deck spacing?

Spacing on a deck refers to the small edge-to-edge gap between decking boards, not the ends of the boards. While this gap is fairly small, it is still a crucial component to any good deck. Without the right deck spacing, the boards may expand, cup, and buckle out of place. As a result, you may have to replace broken decking, ...

Why is it important to maximize air flow underneath and around deck boards?

In order to minimize cupping and expansion / contraction of the boards throughout the seasons , it is important to maximize air-flow underneath and around the deck boards.

What is the gap between deck boards?

Leaving a gap between boards is critical for a well-built deck that will have space to drain, dry, expand and contract without causing the wood any damage. But, you also want to be sure you leave the right size gap: Go too small, and there won’t be enough space; go too big, and the gap can become a safety hazard.

What is the moisture content of exterior wood?

Typical moisture contents for exterior wood products are between 10% and 14%, depending on the local climate and humidity - anything above 15% is considered high moisture content and thse boards will likely continue to shrink.

How many inches of joist spacing for 45 degree deck?

Composite decking brands also generally require 12 inches O.C.joist spacing for 45-degree or angled composite deck board applications. This ensures that

Why Do I Need To Plan My Deck With The Right Joist Spacing?

It’s essential to plan your joist spans and joist spacing correctly - this makes sure your deck will meet building codes and makes it much quicker and easier to get the building permits you need to get started on your deck project. More important than all that, though: joist spacing and span requirements are based on tried-and-true industry standards, and they’re in place to make sure your deck is safe and structurally sound for you, your family, and your friends.

How many inches should deck joists be?

Deck joists are typically spaced either every 12 inches or 16 inches on center. The maximum joist spacing you can use will depend on the size and allowable span of your joists.

How much spacing should I use for a Cumaru deck?

I would follow the specific hardwood seller's recommendations on spacing; Unless you have different instructions from the provider of your specific Cumaru decking, you should use a 1/4" gap for deck board spacing for Cumaru decking, though you might be ok with 3/16" for more-narrow deck boards.

How much gap between 6 inch boards?

A 1/4" gap between 6-inch wide boards can give as much as 1/2" total gap if the boards are installed damp or wet and then dry out - a bit more than desired - as your question suggests. However the risk of buckling or of loss of drainage when the boards are fully expanded in wet weather is perhaps the determining concern.

Why do deck joists need to be protected?

In decking applications subject to continuous wet conditions or the buildup of leaves and tree debris, it is best to protect the tops of the joists from moisture.

What is Vycor deck protector?

Another proprietary product for this application, Vycor Deck Protector™, is available from Grace Construction Products. Membranes such as Vycor Deck Protector can also be used as a barrier between pressure-treated joists and joist hangers, flashings, or other metal hardware to reduce corrosion.

How thick is pressure treated deck board?

We include a description of tightly-butted tongue-and-groove pressure treated deck boards as well as typical 5/4" thick pressure treated deck boards that should be spaced for drainage.

What is the space for hardwood floors?

Many sellers of hardwoods instruct to space at 3/16 – 1/4”. Thank you. - Anonymous by private email 2019/10/16

Do you need to leave gaps between deck boards?

Leave gaps between deck boards to achieve drainage. But most decks need and can achieve spacing between the deck boards for drainage. 'When securing the decking, it is important to leave adequate spacing between the boards for water to drain.

How to make a wood board not split?

Drill pilot holes for screws at board ends so the wood doesn’t split later. Start the holes about 1/2 in. from the end of the board. Blunt nail tips. Blunt the tip of a nail with your hammer to help avoid splits. The nail will punch through the wood rather than wedging it apart.

How to straighten crooked boards?

Straighten a crooked board by slipping a pipe clamp across the end and gradually tightening it as you add nails. This only works if you’re letting the ends of the boards run long and cutting them off later.

What to do if you miss a nail on a deck?

But the downside is that if you miss the nailhead, you’ll leave a deep “elephant track” in the decking. Use a 1/4-in. plywood cushion to protect the deck boards in case you miss with a hammer. It allows you to concentrate on nailing without worrying about denting the deck boards. Next, learn how to choose the best deck finish here.

How to boost a board?

Drive a toenail into the edge of the board for an extra boost . A few extra whacks will nudge the board into position.

Can nails split boards?

Even nails can cause splitting, especially near the ends of boards. Avoid this problem by predrilling a hole the size of the nail shank. Another trick is to blunt the tip of the nail with your hammer before pounding it in. “Splitless” ring-shank nails work well but can bend and break, especially near knots.

Why is spacing important on deck boards?

Why The Correct Deck Board Spacing Is Important. Getting the spacing right on your deck is important for two related reasons: It allows snow and rain to pass through. You don’t want that moisture sitting on your deck and breeding stains through the years . Allowing water to move through will extend the life of your deck significantly.

Why is it important to allow water to move through a deck?

The downside is that leaves can get caught in the cracks, but those are easy to keep off then water and snow is. It allows evaporation to escape. This is important for homeowners that have unprotected decks with bare ground underneath.

What is the best deck material for Colorado?

Cedar decks are by far the most popular decks in Colorado, and therefore we are catering to the needs of homeowners building them. The spacing given here is for softwoods, because spacing on hardwood and composites can vary depending on the your preferences and budget.

Is spacing better for decks?

Not to mention consistent spacing will look better. Keep these things in mind next time you hear someone talk about building a deck with no spacing so that they can achieve a novel look. That look will only last under strict conditions. When in doubt, space it out.

Can you use a deck spacer?

If you like to use technology then you can use a deck spacer to make your life easier. For the clumsier of us out there, this can help avoid dropping the nail or pencil through the cracks. It’ll save a lot of cursing, too.

Can you use galvanized screws on cedar?

You want to use galvanized, powder-coated screws on cedar decks and fences. We recommend Guard Dog exterior wood screws because they are guaranteed against corrosion. This will prevent the “bleeding” that happens when cheaper screws corrode over the years and leave your fence or deck streaked with rust marks.

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1.Cedar Deck Board Spacing: Get It Wrong Pay the Price

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