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Slip-Resistant Trench Drains & Expansion Joint Covers

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Laser-Welded Deposits Offer Unparalleled Durability and Traction for High-Traffic Areas

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Public works and civil construction projects often require safety covers to conceal and protect utility lines, expansion joints and drainage ditches. ALGRIP Slip-Resistant Metal Trench and Expansion Joint Covers provide an added measure of safety by offering exceptional slip-resistance to areas where the accumulation of liquids, dust, grease or other substances creates hazardous conditions. ALGRIP’s unique laser-welded deposits offer unparalleled durability and traction, making it a smart choice for high-traffic applications in workplace or public settings.


Design Features

Available in a wide range of materials, sizes and finishes, ALGRIP Trench and Expansion Joint Covers are extremely versatile and used in major projects throughout the country. Ross’ patented CNC laser deposition process applies more than 1,000 rugged, custom-alloy deposits per square foot in a highly precise and uniform pattern. The superior bond strength of these deposits not only increases the useful product life, but also allows nearly any type of onsite fabrication without compromising the traction providing surface. And the smooth area between raised deposits helps deter the pooling of liquids and trapping of solids, which results in a product that exhibits exceptional self-cleaning characteristics.

ALGRIP is an ideal choice for a variety of applications requiring slip-resistant surfaces, such as:

  • Sidewalks
  • Roadways
  • Bridges
  • Platforms
  • Parking garages
  • Runways


Thousands of companies have chosen Algrip products to help mitigate their exposure to slip and fall risks. Algrip Trench and Expansion Joint Covers are ideal for a wide range of project applications and industries including:

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Technical Data

ALGRIP Slip-Resistant Trench and Expansion Joint Covers are manufactured using technologically advanced machinery developed by Ross to ensure the highest level of quality and consistency. We start with the base material that best suits your application. Choose from various grades of lightweight aluminum, corrosion-resistant stainless or durable carbon steel in plate or sheet form. Next, we laser-weld a minimum of 1,000 anti-slip deposits per square foot to the traffic side of the selected material.

These welded deposits penetrate the metal substrate to produce a permanent, sub-surface bond tested to a maximum hardness of 60 on the Rockwell C scale and a maximum static coefficient of friction of 0.97 COF in accordance with ASTM C1028-89. Finally, the plate is custom fabricated, if needed, using a variety of processes and finishes to meet your specific project requirements. The result is a solid metal cover with durability and slip resistance properties like no other.

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