Both DuraHold and DuraHold2 have the same appearance, but DuraHold2 is approximately half the depth, making it economical in terms of material cost, speed and efficiency for lower retaining walls. These large units weigh in at 982 lbs (447 kg) and install at the rate of 6 square face per unit, which is the most efficient wall you can install. That’s like installing 18 Pisa2 or Concord Wall units at a time. With your excavator doing all the heavy lifting, you won’t need a large crew to install this wall. High wall engineering is provided.
Dura-Hold ®II has the same visual appearance of Dura-Hold, and is generally used in conjunction with Dura-Hold for areas of a project where the massive size of Dura-Hold is not required but the look needs to be maintained. Each module weighs 940 lbs (426 kg) - which is half the weight of Dura-Hold - but the installation rate/coverage is the same. From a cost standpoint, Dura-Hold II is very efficient.
Applications – Structural retaining walls for large embankments
Capacity – Gravity walls up to 39” (1m). Geogrid reinforced walls up to 23 ft. (7m)
Recommended Base Stabilization – one layer of DriveGrid™ stabilization grid between subgrade and base material. Use under Standard Base or Permeable Base.
Standard Base – Min. 6” – 8” of ¾” Crusher Run gravel (any road base standard in accordance with ASTM-D2940) compacted to 98% Standard Proctor Density (SPD).
Alternative Permeable Base – Min. 6” – 8” of ¾“ clear open-graded stone compacted to achieve full particle lock-up and consolidation. (Clear open-graded does not compact but does consolidate slightly by rattling the particles together.)
Leveling – Leveling large retaining wall blocks directly on top of gravel is difficult. U-Grip™ Base units or universal base pads are recommended under most Unilock walls for improved accuracy and make for a speedier installation. For Durahold II, turn the U-Grip base units 90 degrees for a larger front to back latitude for the blocks to sit on. For larger projects, it is recommended to install a poured concrete leveling pad reinforced with rebar. You must ensure that the concrete is poured and finished perfectly in order for the blocks to sit properly without cracking.
Connection – features a tongue and groove connection.
Handling – This is a mechanically placed wall system. Special clamps for lifting are available for use during project.
Coping - This wall requires the Durahold II specific coping. Coping attaches with tongue and groove connection. No adhesive required.
Unilock products and service – best in the industry
Leon Raber from Creative Hardscapes talks about the quality and innovation of the Unilock product, and the wide range of color tones available. He also explains how he is most impressed with the contractor service provided by Unilock, and how the support makes him feel like family.
Tournoux Landcare on why they choose Unilock
Zack Tournoux, one of the owners of Tournoux Landcare Service, shares why they love Unilock paving stones and walls: Top tier products, exceptional catalog (magazine), great working relationship with Territory Manager.
Tournoux Landcare Service
Why Unilock products are this professional landscape contractor’s brand of choice
Caleb Auman from Auman Landscape explains why Unilock has been his product of choice for years, and why he enjoys working in the hardscape industry.
Design trends rise and fall, but for something to be considered classic it needs to be both timeless and elegant. No two words could better describe the Unilock Classic paver. Available in a wide variety of shapes and styles, Classic pavers are made using a proven manufacturing process—blending cement, colors, and stone aggregates into a single batch and distributing the mix throughout the finished paver. This ensures a uniform look that is strong but capable of being formed into the wide variety of styles Classic is known for.
Across North America
Where to Buy
Unilock has an extensive network of dealers with deep knowledge of our products.
The design of large walls should always be reviewed by a qualified, licensed engineer before construction begins—Unilock recommends this, and it’s required by many municipalities depending on a wall’s height.
Modern style is taking over the landscape design industry. Homeowners are asking about bringing clean edges and a simplified look to their outdoor living spaces, and manufacturers are responding with a myriad of related cutting-edge products. The missing piece could be landscape designers and installers if they’re not prepared to fulfill homeowners’ requests for modern designs.