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How to Choose the Right Fasteners

You can’t build a deck without fasteners: the pieces that secure deck boards to foundational jousts. However, you can be particular about the fasteners you choose. Because the right fastener can mean the difference between a beautiful deck that lasts, and one that isn’t set up for success.

Here, we delve into different types of fasteners, and the impact they have on your deck.

Seamless Design

Design is rooted in the details, and fasteners are a crucial one in decking. The wrong fastener is obtrusive on a deck surface, drawing your eye to it immediately, while the ideal fastener is strong and unseen.  There are a few ways to accomplish this, to varying degrees, through hidden and color matched fasteners.

  1. Hidden deck fasteners are either fasteners covered with plugs flush to the surface of the deck, or they are fasteners secured within board grooves underneath.
  2. Color matched deck fasteners rely on screw heads that are the exact color of the deck boards, therefore making holes less noticeable.

Seamlessness isn’t only about aesthetics, either. When fasteners are secured under boards or flush to the surface, they are much friendlier to bare feet!

TimberTech Hidden Fasteners


Fastener Type

What to Know

Compatible With

For grooved boards



A stainless steel, clip-based system that allows boards to be easily switched out

  • TimberTech AZEK
  • TimberTech PRO
  • TimberTech EDGE


A completely hidden and fastener-free surface

  • TimberTech AZEK
  • TimberTech PRO
  • TimberTech EDGE

For square shouldered boards


A completely fastener-free surface with superior holding power that secures boards to the joist at the side

  • TimberTech AZEK

Cortex-Catalog-Comp.jpgCortex for PRO/EDGE

Cortex for AZEK

The best hidden fastener for stairs and perimeter boards, using a specialized deck screw

  • TimberTech AZEK
  • TimberTech PRO
  • TimberTech EDGE


TimberTech Color Matched Fasteners

Fastener Type

What to Know


TopLoc-Catalog-Comp.jpgTOPLoc for PRO/EDGE


Engineered for strength to secure dense deck boards

  • TimberTech AZEK*
  • TimberTech PRO
  • TimberTech EDGE

TopLoc-Fascia-Catalog-Comp.jpgTOPLoc Fascia for PRO/EDGE

TOPLoc Fascia for AZEK

Designed specifically for TimberTech Fascia to prevent oil-canning effects

  • TimberTech AZEK
  • TimberTech PRO
  • TimberTech EDGE

*Separate line of TOPLoc products created specifically for AZEK boards

Lasting Quality

You put so much thought into choosing your decking materials. The same approach should apply to your fasteners.

At TimberTech, we use steel—including stainless steel and carbon-coated—for our fastening systems and deck screws because its quality is unmatched by other materials, especially plastic. Steel also provides the necessary strength to secure dense decking boards and it lasts over time. Consider your deck investment holistically when choosing fasteners.

Compatibility is Key

Just like decking, deck fasteners are not universal. That’s why the best fastener you can choose is one made specifically for your deck, ensuring its structural integrity, quality, and performance.

Using the correct fastening system also affects installation efficiency and effectiveness. Many fastening systems include a drill bit or work best with a specialized tool. While this is something your contractor will usually worry about, it speaks to the fact that these systems are all designed to work a very specific way.

All this, in turn, adds up to the overall design. In the case of TimberTech, our fastening systems are made to prevent an “oil-canning” or mushrooming effect that sometimes occurs when drilling. And, though it hardly needs to be stated, if it’s not made for your deck, it probably won’t look right it!

Ready to Buy?

Now that you’re well versed in the world of fasteners, you may be ready to delve into specific TimberTech products. Below, you’ll find a handy buying guide. You can view complete details on all of our fasteners and systems here.