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The FastenMaster Gapper is a professional-grade deck spacing tool built to speed up installation while locking in consistent, uniform board gaps across the entire deck. Part of FastenMaster's Zip System, the Gapper's single-clip design lets installers back out and reposition boards mid-install for precise alignment — without slowing down the job or sacrificing accuracy.
Built for contractors running high board volumes, the Gapper reduces the number of installation steps compared to manual spacing methods, cutting both labor time and the guesswork that leads to uneven gaps.
Why Use the Gapper
What's Included
Specifications
Frequently Asked Questions
What is the FastenMaster Gapper used for?The Gapper is a professional deck board spacing tool that sets consistent gaps between boards during installation, speeding up the process while ensuring uniform spacing across the deck.
Can I reposition boards after clipping them with the Gapper?Yes — the single-clip design allows boards to be backed out and repositioned as needed during alignment, giving installers more control without added installation steps.
Is the Gapper part of a larger system?Yes, the Gapper is part of the FastenMaster Zip System, a broader deck fastening and spacing platform.
Composite decking stands apart from wood thanks to features that make it easier to own and maintain.
Enjoy long-term durability that outperforms traditional wood decking.
Choose from a wide range of colors to create a look that’s uniquely yours.
Built with advanced materials that resist rot, moisture, and warping.
With simple, occasional cleaning, your deck stays looking clean and polished
Your deck starts with a great plan. Use our decking design tool to explore layouts, materials, and finishes in a realistic, easy-to-use experience. See what’s possible and move forward with confidence—no surprises, just better builds.
Great – we love ‘em. Our team of experts has plenty of experience with tailoring a customized project. Talk to one of our associates on the floor, give us a call, or drop us a line to get started.
For Small Boxed Items:We offer a 1-2 day turnaround for small boxed items and a tracking number will be provided to keep you updated on the status of your delivery.
For LTL Freight (Common Carrier) Items:We use LTL freight for safe and efficient delivery. Your order will be scheduled for delivery, and it's important to note that for decking deliveries, a homeowner needs to be on hand to unload the product. This ensures a smooth and hassle-free delivery process. Rest assured, we're here to make the process as convenient as possible for you.
If you need it, we’ll get it! As your one-stop deck shop, you’ll find everything at your fingertips, or we’ll get it shipped out to you anywhere in the continental U.S.
The Deck Store takes the guesswork out of pulling your project together. Stop by our local retail store in Knoxville, or enjoy hassle-free online ordering.
Our customers are our #1 priority, and we’re dedicated to bringing you quality decking supplies. Our customer promise is to carry the highest quality products, so you can enjoy your deck or dock for years to come with minimal maintenance.
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