BlackJack is a height and slope adjustable pedestal for paver and decking support engineered to reduce material, construction and lifecycle costs. It caters to a wide range of height requirements, from 2-7/8 to 40" (74mm - 1016mm), using only three main components parts (Top, Coupler and Base). The large flat base and rounded edges do not penetrate and compromise waterproofing membranes. The base flange design prevents water ponding and breeding of pests. Unique BlackJack Turning Tool connected to a power drill permits height adjustments to be made with minimum effort.

  1. Tab Plate included with all Pedestals
  2. High ultimate compressive strength for various height combinations
  3. Manufactured from recycled plastics.
  HEIGHT RANGE mm COMPONENTS
BJ-3 2.9" - 4.6" 74-117 BJ-3
BJ-4 4.6" - 7.9" 117-201 BJ-4
BJ-5 7.75" - 11.0" 197-281 BJ-5
  10.9" - 17.5" 277-446 BJ-4 + 1 Coupler
  14.0" - 20.7" 357-526 BJ-5 + 1 Coupler
  17.2" - 27.2" 437-691 BJ-4 + 2 Couplers
  20.4" - 30.3" 517-771 BJ-5 + 2 Couplers
  23.5" - 36.8" 597-936 BJ-4 + 3 Couplers
  26.7" - 40.0" 667-1016 BJ-5 + 3 Couplers

Note: All dimensions are approximate only.

SPECIFICATIONS
Material Polypropylene
Height Range 2-7/8" to 40" (74 - 1016mm)
Ultimate Compressive Strength¹ 15kN (3372 lbs)
Design Compressive Strength¹ 11kN (2473 lbs)
Slope Correction 0% to 5% @ 1% Increment
Base Diameter 7.5" (189mm) B-1
8.0" (202mm) B-2
Spacer Tab Height 5/8" (15mm)
Spacer Tab Thickness 1/8" (3mm) gap between pavers
Joist Holder 1-3/8"-3-1/8" (35-80mm) joist width
Biological / Chemical Resistance Unaffected by mold and algae
Good resistance to alkali and bitumen

¹ Varies with different height.