Velarionna 8Pcs ABS Deck Spacer Tool with 4 Thicknesses 1/16", 1/8", 3/16", 1/4", Decking Board Jig Spacers Clamp, Deck Spacers Assorted for Pressure Treated Composite Decking

First impressions and why spacing matters

I spent a weekend refacing a weathered deck and used the Velarionna deck spacers throughout the install. Consistent board gaps are the unglamorous detail that make or break a deck: they control drainage, let debris fall through, allow airflow, and give wood room to expand and contract. These spacers keep that detail from becoming guesswork. They’re simple, bright, and designed to do one job: set repeatable gaps quickly and accurately.

Design and build

Each spacer is a compact, bright green ABS tool with four built-in thicknesses—1/16", 1/8", 3/16", and 1/4". You rotate the spacer to the edge that matches the gap you want, and the size is clearly molded and printed on both sides. The high-contrast labeling is genuinely helpful when you’re moving fast, and the neon color makes them easy to spot on a busy deck surface.

The kit includes eight spacers. That count feels just right: enough to lay out along long runs (I used six at the field and kept two for the next board), but not so many that you’re constantly scooping them up. They’re slim enough to slide between tight boards but sturdy enough that they don’t flex under the pressure of a board being pulled into place.

A small but useful detail: printed screw alignment guides. They’re simple reference marks on the faces of each spacer that help you center your screws relative to the board edge. On top-screwed composite or hardwood, those guides speed up your rhythm and help keep hardware lines straight.

Setup and ease of use

There’s no real setup—just choose your thickness and go. I typically default to:

• 1/8" for most composite and PVC boards, unless the manufacturer specifies otherwise.
• 3/16" for hardwoods that need extra breathing room and better airflow.
• 1/16" for picture-frame borders or tight visual fits where drainage is handled elsewhere.
• 1/4" for wet pressure-treated lumber that will shrink as it dries.

The spacers slide cleanly into position and stay put thanks to their flat faces and slightly grippy ABS texture. They’re not clamps (and don’t pretend to be), so you’ll still need your usual prybars, ratchet straps, or board jacks to tame crowned or stubborn boards. Once the board is aligned, the spacers hold the gap without wobble while you fasten.

Accuracy and consistency

The most important measure of any spacer is consistency across a build. The Velarionna spacers deliver uniform gaps board after board. I checked the sizes with calipers out of curiosity: they were well within tolerance, and more importantly, they were consistent from piece to piece. The edges are crisp, so they register well against both square edges and eased edges on composite.

Because each spacer includes four sizes, I didn’t have to dig for a different tool when switching from a field board to a picture frame or moving to a shady area where I wanted a slightly wider gap for drying. That small convenience adds up over a day’s work.

Compatibility with different materials

I tried them across pressure-treated pine, capped composite, and a section of dense hardwood. A few observations:

• Pressure-treated lumber: The 1/4" side is very practical for wet stock that you know will shrink. The ABS material doesn’t take on moisture or swell, so your gap stays true during install.
• Composite: The 1/8" side is the star here. The spacers don’t mar the shell on capped boards, and the alignment marks make top-screwing faster if you’re not using hidden fasteners.
• PVC and hardwood: With boards that move more with temperature or moisture, the 3/16" option gives a little extra margin without looking exaggerated.

If you’re using clip systems, you’ll still find these helpful for picture-frame borders, breaker boards, and stairs, or to sanity-check factory clip spacing on longer runs.

Durability and fieldworthiness

ABS is a sensible choice. These spacers aren’t brittle; they’ll survive drops, foot traffic, and getting kicked off a joist. Mine took a couple of tumbles to the patio and came up with only surface scuffs. Edges stayed true and didn’t mushroom. I left a few in full sun on a midsummer afternoon and didn’t notice any softening or deformation.

Cleanup is easy—sawdust brushes off, and resin or pitch from PT lumber came off with a quick wipe. Because they’re plastic, they won’t stain deck boards the way some metal spacers can if left in the rain.

Speed gains you can feel

The time saved is real. No shims, no measuring by eye, no reaching for a different thickness; I just rotated a spacer and moved on. Eight pieces are enough to distribute across a 16-foot run—one at each end, a few across the middle, and extras for ends or returns. That keeps boards from “walking” as you fasten, especially when you work alone.

The alignment marks also help maintain a clean screw pattern without snapping a chalk line on every board. For me, that meant fewer steps back to check straightness and fewer corrections.

Limitations and small caveats

• They’re not clamps: Plan on using your usual board-straightening tools when dealing with warped lumber. The spacers hold the gap; they don’t provide force.
• Thickness range: 1/16" to 1/4" covers most needs, but if you want oversize drainage gaps (say, for a dock or a very debris-prone area), you’ll need an additional solution.
• Extreme heat: ABS holds up well in typical jobsite temps, but don’t leave them pressed under a dark board in scorching sun for hours. It’s not something I experienced as a problem, just a general best practice.

None of those are dealbreakers; they’re just the realities of how spacers fit into a decking toolkit.

Practical tips from use

• Place spacers at the ends and over joists: This keeps the board aligned both at the edge and where it’s actually supported.
• Mix sizes strategically: Tighten up to 1/8" where water’s controlled (covered areas), and open to 3/16" in shaded or slow-drying zones to help the deck dry faster.
• Pull boards first, then set gaps: Use a board jack or strap to straighten a run, then slide the spacers in before fastening. You’ll get cleaner lines and fewer mid-board adjustments.
• Mind the screw guides: If you’re top-screwing, use the marks to keep fasteners centered and symmetrical. It’s a small touch that upgrades the finished look.

Value

Compared to specialty name-brand spacers, these do the same job for less, without the “single-use” feel of disposable shims. The multi-thickness design in each piece reduces the number of tools you carry, and eight units per kit is generous for the price point. They’re the kind of accessory that pays for itself in time saved on your first deck.

Who these are for

• DIYers tackling a first deck or refacing: Clear, easy, and hard to misuse.
• Pros who want reliable, repeatable results: Durable enough for repeated jobs and efficient in daily use.
• Anyone working across different materials: The four sizes cover most manufacturer spacing specs for pressure-treated, composite, PVC, and hardwood.

Final take and recommendation

The Velarionna deck spacers are a straightforward, effective way to get professional-looking gaps with minimal fuss. They’re accurate, durable, and genuinely faster to use than cobbled-together shims or single-size spacers. The bright color, clear labels, and built-in screw alignment guides are thoughtful touches that improve workflow, and the eight-piece count is practical for real-world deck lengths.

I recommend these spacers. They offer consistent results across materials, hold up to jobsite abuse, and simplify one of the most finicky parts of decking. If you need more than their 1/16"–1/4" range or expect them to act as clamps, you’ll still want other tools in your kit. But for setting clean, repeatable gaps and keeping installations moving, they do exactly what they should—reliably and at a good value.