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FAST 2K™ DECK POST ANCHOR is a patented expanding composite designed to fill the peripheral void between a post and the hole for load-bearing applications. This product builds on the technology of the award-winning and widely successful FAST 2K™ and pole-setting expanding composite backfill used to set fences and utility poles for more than 20 years. The expanding nature of this product allows the use of up to 90% less weight in the FAST 2K™ DECK POST ANCHOR compared to concrete.

Application Area: Decking

Features: Effective Load Builder, Excellent Water Resistance, Fast Setting, Freeze/Thaw Stability, Good Adhesion

Technical Data Sheet
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Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Product Highlights
  • FAST 2K™ DECK POST ANCHOR expands immediately after mixing and holds the posts in 3 - 5 minutes. Additional work can be done on posts in 15 - 30 minutes after FAST 2K™ DECK POST ANCHOR hardens.
  • FAST 2K™ DECK POST ANCHOR does not require water, sets posts in minutes and becomes water-resistant, once fully cured, to help protect posts against rotting.
  • FAST 2K™ DECK POST ANCHOR has been tested and been found to not provide a food source for termites.
Product Features
  • FAST 2K™ DECK POST ANCHOR expands from a thin liquid, allowing for easy installllllllllllllation in off-center holes
  • No post base/saddle required
  • Has exceptional adhesion to posts allowing for heavy loads to be placed on the post
  • Water resistant to protect post from rot or corrosion
  • Can be used during winter

Applications & Uses

Application Area
Product Uses
  • FAST 2K™ DECK POST ANCHOR material is used as stabilizing backfill material around embedded posts, as an alternate to the concrete described in IBC Section 1807.3.3.
  • FAST 2K™ DECK POST ANCHOR can also be used as a footing, to transfer downward axial load from the embedded post to the soil.
  • For structures regulated under the IRC, FAST 2K™ DECK POST ANCHOR may be used when an engineered design is performed in accordance with IRC Section R301.1.3.
  • Used for deck post installation, highway sign post installation, pole barn post installation.
  • For applications more than 1 story or greater than 590 sq ft (55 m2); where the structure supports a roof; is attached to another structure; or where constant hydrostatic pressure is expected, the design must be carried out by a registered professional engineer.
  • Installation requires excavation below the frost line. The required diameter of the hole to transfer the load from the post to the surrounding ground will depend on the expected load carrying capacity of the structure to be supported.
  • While the FAST 2K™ DECK POST ANCHOR has been found to not provide a food source to termites, local regulations regarding removal of infested soil must be followed.
  • The product should not come in contact with gasoline or other chemicals that have not been evaluated.


Physical Properties
ValueUnitsTest Method / Conditions
Initial Expansion Time45 - 75s-
Initial Gel Time3 - 6min-
Full Cure15 - 30min-
Dimensional Stability± 2%-
Freeze Thaw Resistance± 2%-
Density (at 25°C)65 - 85kg/m³-

Safety & Health

Clean Up
  • Using a soft cloth and mineral spirits, carefully remove any composite smudges from surfaces of the post that are visible (above ground) as well as from tools before composite dries.
  • After the composite dries, it can only be removed by carefully cutting it with a sharp knife. Be careful as this may damage the post surface.
  • Should some of the composite get on your skin, wipe away, then wash the area immediately while product is still wet.
  • Should the product cure on your skin, apply liberal amounts of hand lotion to the area, multiple times a day, and it will peel away after 2 - 3 days.
  • If the composite gets into your hair or beard, coat the area thoroughly with hair conditioner and leave it for 10 minutes then comb and wash the product out.

Packaging & Availability

Packaging Type
Regional Availability
  • Australia & New Zealand (ANZ)
  • Latin America
  • North America
  • South East Asia

FAST 2K™ DECK POST ANCHOR is available in the following packaging:

  • Retail Kit 33.8 fl.oz. (1L) Divided Bags: 10 kits/case, each kit fills 0.5 cu. ft.
  • Contractor Case of 12 x 33.8 fl.oz. (1L) Divided Bags: 12 kits/case, each kit fills 0.5 cu. ft.
  • Pail Kits are also available.

Storage & Handling

Shelf Life
24 Months
Storage Conditions

While FAST 2K™ DECK POST ANCHOR performs when ambient temperatures range from -5°F to 105°F (-20°C to 40°C), it should be acclimatized to 65°F to 80°F (18°C to 27°C) for at least 1 - 2 hours prior to use, to provide optimal mixing and cure rate performance.


For unused or expired material, completely mix the 2 components together and dispose as non-hazardous waste after product has cured.