Deck Accessories
Tools
DeckWise
$8-$20/set

Deck Board Spacers for Consistent Professional Installation

Deck board spacers are simple tools ensuring uniform gaps between deck boards for proper drainage ventilation and thermal expansion. Consistent spacing prevents water pooling promotes airflow beneath boards and creates the professional finished appearance that distinguishes quality deck installations.

Key Features

  • Ensures uniform board gaps
  • Promotes proper drainage
  • Allows thermal expansion
  • Reusable construction
  • Multiple gap widths available
  • Simple insertion tool

Specifications

Gap widths: 1/8 3/16 1/4 in | Material: plastic or stainless steel | Reusable: yes | Quantity: sets of 10-20 | Compatible: all decking types

Best For

Installing composite wood and PVC deck boards where consistent spacing is required for drainage expansion and professional appearance.

Compatible Materials

Composite decking
Pressure-treated lumber
Cedar
PVC decking
Hardwood decking

Pros & Cons

Pros

  • ✓ Ensures professional results
  • ✓ Consistent gaps every time
  • ✓ Reusable for entire project
  • ✓ Prevents water pooling issues
  • ✓ Very affordable

Cons

  • ✗ Can be slow for experienced installers
  • ✗ Only works for standard gaps
  • ✗ Must remove before fastening
  • ✗ Can break with rough use
  • ✗ Limited gap options

Installation Tips

Insert spacer between previously installed board and new board. Push new board against spacer. Fasten board in place then remove spacer and move to next board. For composite decking use manufacturer recommended gap width typically 3/16 in for sides and 1/8 in for ends.

Frequently Asked Questions