Pool Decks, Driveways, Patios, Walls, Pool Plastering and more...
For a FREE project estimate call: (978) 373-4223

Retaining Walls

From planters to large scale block retaining walls, Triad Associates can install any wall project you can imagine. Triad can offer you a wide selection of shapes and natural colors to enhance your property and match your individual style. Appearance and structural integrity are the top priorities for Triad when installing retaining walls. Triad is a certified Techo-Bloc installer. Techo-Bloc produces the highest quality interlocking paver and wall systems on the market.

For a complete list of Techo-Bloc products and colors please visit:

Finished Retaining Wall Projects

Block Wall Construction Process:

Why does Triad use Techo-Bloc wall blocks?

  • Transferable lifetime warranty – Techo-Bloc Warranty (PDF)
  • Techo- Bloc wall blocks are manufactured with color through-and-through
  • Less breakage, so you don’t have to sort through pallets and discard broken wall blocks
  • Techo-Bloc pavers, curbstones and wall stones are designed specifically to complement each other; your patio can match the wall and the wall can match the walkway and steps.

“Your precious stones are the benchmark for quality” – Techo-Bloc


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Triad Associates, Inc.
100 Downing Ave.
Haverhill, MA 01830

Phone: (978) 373-4223
Toll Free: (800) 464-8833
Fax: (978) 373-8051