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More Engineering = Less Impact

Stronger, precision-engineered TerraLam mats weigh less and covers more surface, requiring fewer truckloads. Save up to 50% on freight costs and reduce CO2 emissions through fewer truckloads. A 1-mile temporary road of TerraLam 500 mats delivered 500 miles saves 30 metric tons of CO2 vs. the same amount/distance for timber. This is More=Less: more engineering, more efficiency, and more data result in less environmental impact.

Sterling’s commitment to measurability and transparency ensures that the sustainability benefits of our products can support your corporate social responsibility, Net Zero and ESG initiatives, and Scope 3 emissions reporting.

Terralam 300 (8’x14’): Load 36 pcs of new 14’ mats per truckload (288 LF) compared to 20 pcs of bolted access mats of the same size (160LF).

Terralam 508 (8’x16’): Load 18 pcs of new 16’ mat per truckload (144LF) compared to 18 pcs of 4’x16’ timber mats (72LF).

Terralam TL700 (8’x16’): Load 13 pcs of new 16’ mats per truckload (104 LF) compared to 10 pcs of 4’x16’x12” crane mats (40LF).

Faster, Lower Cost/Risk Installation

TerraLam mats are designed to be installed faster, saving labor time and reducing fuel usage through fewer equipment hours by up to 40%. 

Maximum Durability

Innovative, solid cross-grain laminated construction provides a highly secure bond across more surface area than bolted timbers. Solid red oak dowels (patent pending) are added to extend life by 30%. This design helps TerraLam mats last longer even with heavy tracked equipment. Fewer mat replacements and less project downtime ultimately lower overall environmental impact. 

Safer and More Sustainable

Built with solid tops and no metal fasteners, TerraLam mats help prevent puncture injuries, vehicle damage, and tripping and traffic hazards. They’re also built with renewable southern yellow pine that matures in an average of 25-35 years, compared to the 80-100-year-old hardwood used in conventional hardwood matting. Southern Yellow Pine material offers a cradle-to-grave lifecycle, from renewable resources to end-of-life use as mulch and biofuel, or biochar, to name a few. The smooth, solid surface is not only safer but it also reduces “pumping,” soil mixing, and invasive species transport.

  • Environmental Product Declaration (EPD) verified report measures the sustainability of CLT mats, detailing the environmental impact of the product through its lifecycle
Read Our Safety White Paper → Read Our Environmental White Paper →
Introducing the TerraLam Connect System

With the new TerraLam Connect System, it’s now possible to tether adjacent mats together to maintain the integrity of access roads and platforms. By keeping mats together, less maintenance of roads and platforms is required, reducing service costs and work interruptions. This is particularly useful in wetlands and areas that experience heavy rain or flooding, where mats may shift or even float away.

Read Our TerraLam Connect System Brochure →

Available Sizes

TerraLam CLT mats are available in 3- 5- or 7-ply construction, with a variety of lengths and widths that fit your needs. Need a specific size? Just ask.

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TerraLam® 300 CLT
Sterling Terralam 300 CLT
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TerraLam® 300 CLT mats are a preferred alternative for traditional bolted access mats and are well suited for temporary access roads, drilling/equipment staging platforms, general ground protection, and bridge decking.

  • Application examples include laying temporary access roads and work pads along the right of way.
TerraLam® 500 CLT
Sterling TerraLam 500 CLT
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TerraLam® 500 CLT mats are engineered for heavy-duty trucks and tracked machinery and are the preferred alternative to traditional bolted timber mats to provide site access, construct temporary access roads, support drilling/equipment platforms, offer ground protection, and can be used as bridge decking.

  • 508 advantages – More efficient with only one touch point needed
  • Application examples include Pipeline projects, protecting wetlands and work pads for cranes.
TerraLam® 700 CLT
Sterling TerraLam 700 CLT
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TerraLam® 700 CLT mats are engineered as a more efficient, durable, and sustainable replacement for 12” crane mats and designed to handle large mobile cranes and exceptionally heavy equipment.

  • Application examples include temporary access roads and work pads for mobile cranes.

Frequently Asked Questions

Sterling Terralam CLT Mats

Lighter weight with more coverage per mat means less fuel used and greater CO2 avoidance in transporting the mats to the jobsite – 30% to 50% fewer truckloads (which means fewer emissions) for the same square footage as timber mats.

Sterling measures Scope 1 & 2 emissions to continually improve its sustainability and offer data-driven reporting to our partner customers reporting Scope 3 emissions.

Mat strength lies in its ability to transfer weight through the mat into the surface below. Bolted mats only transfer load at the location of the mechanical fasteners. Adhered CLT mats transfer the load through every available square foot. Additionally, the adhesive provides a moisture barrier at each layer, protecting the mat from eventual rot and decay.

Bolted access mats and traditional timber mats are made with a variety of mixed hardwoods and softwoods, without consideration for lumber grade — resulting in inconsistency across mats. With an engineered cross-laminated timber product, you can be assured that every mat delivered will perform to your specifications.

Currently TerraLam mats are available in 3- or 5-ply construction.

  • TerraLam® 300 CLT – 8′ wide x 14′ or 16′ long
  • TerraLam® 504 CLT – 4′ wide x 16′ or 18′ long
  • TerraLam® 508 CLT – 8′ wide x 16′ or 18′ long

Yes, in fact, they are superior in promoting environmental stewardship. The adhesive becomes chemically inactive prior to leaving the Sterling facility, presenting no harm to the environment. (The metals in bolted mats oxidize, leaching contaminants into the ground and creating disposal difficulties.)

The raw materials in TerraLam mats reach maturity in approximately 20 years, whereas the hardwood species used in bolted mats can take 80-100 years to regrow.

Additionally, the solid surface and adhesive barriers between layers don’t allow invasive species to embed themselves into the mats like with traditional mats.

TerraLam mats have been tested successfully in temperatures as low as -70°F and as high as 150°F. While all wooden mats can be slippery in wet, muddy, and icy conditions, the solid top of TerraLam mats makes removing mud, snow, or ice much easier. Once TerraLam mats are traveled on, they become well-seasoned, mitigating slickness in challenging conditions.

Since TerraLam mats are a solid block of wood, necessary repairs can be done easily and at less expense than with bolted access mats. Repairs to bolted mats often require removing rusted or bent bolts and fragmented boards. Damaged TerraLam mats are safer on the jobsite than a damaged bolted mat, as a damaged CLT mat does not expose crews to puncture injuries or equipment damage.

Sterling prides itself in creating long-term relationships, not maximizing transactions. A Sterling expert will review your project and work with you to determine whether it’s best for your business to rent, lease, or buy TerraLam mats.

TerraLam CLT mats are constructed with rapid-growth southern yellow pine #2 grade kiln-dried lumber, along with a moisture-activated polyurethane adhesive. The wood’s existing water helps cure the adhesive, creating an exceptional bond. Independent laboratories, including the USDA Forest Products Laboratory, San Diego State University, and Henkel Adhesives, have validated the strength and durability of TerraLam products.

The TerraLam Connect System allows you to tether adjacent mats together to maintain the integrity of access roads and platforms. This application is particularly useful in wetlands and areas that are experiencing heavy rain or flooding.

TerraLam mats can also be fitted with interconnecting fingers that work in the same manner as traditional bolted access mats.

The TerraLam Connect System is easy to use and can be completed by one person with an impact driver. Installation requires no pre-drilling. Simply lay the TerraLam Connect strap with each end on adjacent mats. Use an impact driver to install the screw through the hole on the bolt plate until it is tight against the mat. More detailed instructions can be found in the TerraLam Product Guide.

Prior to moving mats, the TerraLam Connect strap and lag screws must be removed. At the conclusion of a project, straps and screws should be collected and returned to Sterling with the TerraLam mats. The straps and screws will be inspected and re-used or recycled.

Start a Project

Ready to start your next project and find out how TerraLam can save you time and money? Contact us today for a quote.

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