Frequently Asked Questions

TRUEGRID is an eco-friendly paving alternative to concrete and asphalt that provides stability and storm water detention. TRUEGRID is super durable and storm water permeable to reduce flooding as well as stop rutting and erosion by providing structure for ground stabilization. Park/drive on the TRUEGRID surface and detain water underneath.

TRUEGRID’s patented design allows for the product to perform in high traffic/heavy load applications in all climates.  The patented flex joints are the biggest differentiator.  The combination of vertical compression strength and built in flexibility is what truly sets TRUEGRID apart.

TRUEGRID products can handle anything that is on the road today including H-20 / HS-20 loading.  See CASE STUDIES page and PROJECT page of website for heavy load applications.

Yes, TRUEGRID can be installed in driveways, commercial parking lots, and up to heavy industrial lay down yards.  There are multiple TRUEGRID projects that have constant 18-wheeler traffic on a daily basis.

25 to 60 plus years depending on traffic and application. TRUEGRID will typically outlast asphalt and last as long as or longer than concrete.  TRUEGRID is produced from 100% Post-Consumer High Density Polyethylene with added UV inhibitors.

The combination of vertical compression strength and built in flexibility is what truly sets TRUEGRID apart from other pavers.  The speed and ease of installation for the contractor or DIY’er due to no staking or tools.

TRUEGRID ships directly from one of our manufacturing USA manufacturing facilities in.  You can order boxes directly from our website HERE, for small quantities or request a quote for volume discount pricing.  We ship direct from our manufacturing facilities to keep your price low for a high quality product.

TRUEGRID pricing is a delivered price to the location of your choice.

Yes.

Everywhere.

For orders under 1200 square feet, order directly from the website. Please call or email for orders over 1200 sf.  Pricing can be requested from our website or by calling direct.

In addition to our boxes (ECO – 72sf/box, PRO PLUS – 40sf/box) we also offer sample boxes for smaller quantities (ECO – 16sf/box, PRO PLUS – 8sf/box)

TRUEGRID is palletized in 4’x 4’ preassembled sections for larger orders.  Smaller online orders will be prepacked.  72 sf per box for TRUEGRID ECO.  40 sf per box for TRUEGRID PRO PLUS.

The installed cost of TRUEGRID will be greatly dependent on project size and gravel prices in the area.  For a typical commercial parking lot you could expect to see installed costs between $5.50-$6.50 per square foot which is typically cheaper than concrete.

The TRUEGRID System was developed to be very simple to install. Any contractor, landscaper, or DIY’er can easily do it the first time with little direction. We are also available for any needed guidance. Ask us about our simple installation guides specific to your application.

Yes.  We have multiple cross sections and How To guides on our website or you can give us a call if you have any questions.  We are always available for assistance.

Email or call us for a preferred installer in your area. If you have a paving contractor or landscaper who you would like to use for your TRUEGRID project, feel free to have him contact us directly for installation guidelines.  TRUEGRID was developed to be simple to install.

Yes. You may seed, or use sod with TRUEGRID.

Yes, TRUEGRID may be seeded or sodded.

Base rock for detention and added drainage considerations should be angular, clean/washed rock, ¾” or 1” typical. If sub-surface detention is not a factor in your project, a compacted base such as recycled concrete or other road bases can be used.

You may use a wide variety of fill rock that is ½”-3/4” angular clean/washed, depending on what is locally available in your area and what the desired aesthetics of your project are. For ADA compliance it is best to use 5/8” diameter or smaller fill rock.  TRUEGRID carries the load so it can be filled with a variety of aggregates.

TRUEGRID recommends a geotextile fabric to be installed between the subgrade and base material.  This will not only act as a weed barrier but a separation barrier for your base material and the subgrade.

Depending on the application, TRUEGRID recommends the base be between 4”-8”.  For most new commercial applications, the base will be 8” but can be increased if more detention volume is desired.  TRUEGRID can also be installed directly on an existing gravel area to mitigate dust, mud and prevent long term maintenance.

TRUEGRID does not require edging but it can be installed if desired.  If transitioning to an adjacent hardscape you will want to ensure the TRUEGRID is flush or slightly recessed below the surrounding grade.  See edging detail on our Technical Specs page.

TRUEGRID does not require staking due to the built in x-anchors.  The fill material along with the weight of TRUEGRID will keep the system in place.

TRUEGRID is designed for slopes up to 20 degrees.  Anything greater, TRUEGRID recommends to stake the product in place.

No, TRUEGRID requires no clips or stakes.  TRUEGRID has built in robust male/female connection tabs that simple snap together for quick installation.

Typically none. TRUEGRID is a maintenance free system with a stone infill.  Grass infill will require water and mowing.

Typically, pervious surfaces are encouraged by most municipalities to reduce storm water runoff and flooding. Check with your local permit office or your contractor for local coding. If we can help, please call or email us.

TRUEGRID is made in the U.S.A. out of quality USA raw materials.  Factory direct.

Yes, TRUEGRID projects are ADA complaint when transitions are kept less than ½” and aggregate of ½” or under is used.  It is important to only fill the TRUEGRID flush to the top and not overfill.  The TRUEGRID DECK is also ADA compliant and offers a gravel free surface while also 100% permeable.

Ten-year warranty for workmanship and manufacturer’s defects. Check the installation contractor for installation warranty. TRUEGRID does not directly provide construction or installation services and does not warranty installation.

Yes.  TRUEGRID recommends to keep the blade of the plow ½”-1” above the grid.  This can be accomplished by roller guides or risers on the plow.  See Snow Plowing technical document on our Technical Specs page.

TRUEGRID works with all soils and in all climates. For unstable soils a geo-grid mesh or permeable pinpoint fabric may be helpful between the soil and the rock base.  TRUEGRID integral flex joints allow it to hug the ground with any type of soil movement.  It will not buckle and unzip like rigid systems.

Yes. The temperature range of TRUEGRID products is -58F to 198F.

Fast! The panels are pre-assembled in 4’x 4’ sheets. TRUEGRID can be installed at over 1000 sf per man-hour. Also, TRUEGRID is plenty strong enough to drive full gravel trucks on the empty TRUEGRID before the rock fill.  This ability speeds up the construction of a project tremendously.

What are the environmental benefits of TRUEGRID? TRUEGRID is green from manufacturing through end use. TRUEGRID is made from 100% post-consumer recycled HDPE. Using TRUEGRID allows storm water to permeate through the aggregate or grass fill so bio-remediation can help remove pollutants from the water before it reaches the water table (Environment). Also, substituting TRUEGRID for concrete eliminates the CO2 emissions from the manufacture of cement. In addition, TRUEGRID reduces the urban heat island effect associated with concrete and asphalt paving.  Enter the square feet of your project on our Environmental Impact page to calculate your environmental impact and benefits for your specific project.

Other colors can be special ordered. Because we must use virgin plastic there is an up-charge and minimum order quantity.

SuperSpots and/or SuperSpot Reflector may be used to stripe your parking lot.  These are available in multiple colors and can be configured however you’d like.  Typically, the spots are installed every foot or 18 per parking stripe.  See SuperSpot striping details on our Technical Specs page.

For the life of the installation when filled with the recommended clean, washed fill aggregate.

Yes, TRUEGRID reduces storm water runoff by providing water detention volume in the gird and the sub-base.

Yes, TRUEGRID prevents muddy stalls, paddocks, swivels/walkers, trailways and pens; helping to prevent hoof disease.

Yes, TRUEGRID is the perfect option to provide soil stabilization for fire lanes and fire engines and emergency vehicles. TRUEGRID meets code and has been installed in many such projects across the country. TRUEGRID Fire Lane typical cross sections can be found here.

Yes.

By using angular, clean stone 1” or under you can create detention which is calculated by multiplying the square foot of TRUEGRID by the depth of the cross section and then by 40%. This represents the void space in the rock sub- base and the detention capacity.  Please give us a call to see how we can help figure the detention capabilities for your project.

Install TRUEGRID 1/8” to ¼” below the concrete or asphalt where it transitions to TRUEGRID. See transition detail on our Technical Specs page.

Yes, TRUEGRID can be easily cut on site with a handheld power saw.

Virtually any paving application except for high speed highways. Parking lots, equipment storage yards, driveways, fire lanes, sports fields, overflow parking, job sites, oil field rig sites, pathways, ADA compliant surfaces, horse and livestock stalls and trails, event parking, entertainment venues for parking and foot traffic, landscaping, temporary parking or heavy vehicle traffic, equipment pads, shed pads, hot tub pads, pool skirting, golf course paths.

TRUEGRID is injection molded in the USA from 100% post-consumer recycled HDPE.

High density polyethylene, a tough, inert, groundwater neutral material.

LID stands for Low Impact Development where green, sustainable building techniques are used in new construction to minimize or eliminate the environmental impact of new development.

TRUEGRID recommends to fill the gravel flush to the top of the grid.  This keeps the gravel contained within the cells of the grid and prevents gravel migration.  It also prevents any potential dust issues as the grid is the load bearing structure so the fill material is not pulverized.

Yes, there are 5 LEED categories for TRUEGRID.  Please see LEED document on our Technical Specs page.

No, as long as you only fill flush to the top of the TRUEGRID the gravel will be contained.

TRUEGRID is readily available and can ship the next day after the order is processed.

During the manufacturing process a UV stabilizer is added to the HDPE.

Yes, as long as you use ½”-3/4” angular stone filled flush to the top of the grid it will be high heel friendly.

Absolutely, the combination of 100% permeability and the 40% void space detention volume can for sure reduce if not completely eliminate the detention pond.

TRUEGRID is not a distributor of products.  We are the manufacturer and experts in permeable paving.  We can help you design you project and work directly with engineers or architects for site specific designs.  We also offer the details needed to make the engineer’s and architects job easier.  TRUEGRID is with you from design to installation.  We want to make sure your project goes in correctly and performs like it is supposed to.

• Always available and easy to order.  Just call and place your order when you are ready.
• TRUEGRID products ship within 24 hrs.  Direct to site…residential or commercial.
• Industry best patented design with integral flex joints that are necessary for project longevity and adaptability to any climate or soils.  Robust connectors that allow for quick installation and will not separate. No staking, or clipping necessary.
• Made in USA and developed for overall strength, longevity and ease of install.
• No distributor markup.  We give you the most product at the lowest cost direct from one of our USA factories.
• Trusted by engineers and architects for long term performance.
• Eco-Friendly from production to performance.  Made from 100% post-consumer recycled HDPE.
• TRUEGRID is customer driven.  We can assist from project design to installation. We are always available and happy to help.