FREQUENTLY ASKED QUESTIONS

LSG Load Support Grid

What sizes do the grids come in?


Each expanded panel of LSG Load Support Grid is 9' L x 24' W (215 square feet) and comes in one of three depths; 3", 4" or 6"




What material is the LSG grid made of?


LSG Load Support Grid is made from virgin HDPE (high density polyethelyne).




How do I know what cell depth to use for my project?


You can always give us a ring at the office or shoot us an e-mail to discuss your project in detail but a good rule of thumb is: LSG-3 is good for patios and walkways with pedestrian traffic up to 8,000 lbs. LSG-4 is good for standard cars and pickup trucks up to 40,000 lbs. LSG-6 is good for heavy trucks and fire access up to 80,000 lbs.




Why do I need Load Support Grid?


The LSG system confines materials and prevents lateral movement away from the applied load. The stabilizer grid acts as a large mat, by spreading the load over an extended area while increasing the load bearing capacity of the surface. Bottom line, load support grid makes a strong foundation that will prevent rutting .




What if I have a slope that I will drive on?


It is OK! LSG Load Support Grid will work for slope protection and also provide the load support needed for a drivable surface. If you still have questions on this topic, Please give us a ring at the office so we can learn more about your area and determine if LSG is the appropriate product for your project. 410-721-4844 or info@celltekdirect.com




What other materials do I need for my project?


Each project is different. The materials needed depends on what the top surface will be. Always double check with us but use this as a quick guide: Loose gravel surface: - Non-woven geotextile fabric - LSG Load Support Grid - Rebar J-Hooks to keep the grids pinned down - Stapler to connect grids together (if needed) - Infill stone Grassy surface: - Triax Geogrid - LSG Load Support Grid - Rebar J-Hooks to keep the grids pined down - Stapler to connect the grids together (if needed) - 50/50 mix of stone and soil as the infill Paver surface: - Non-woven geotextile fabric - LSG Load Support Grid - Stapler to connect the grids together (if needed) - Stone infill - Pavers and bedding sand Gravel-Lok bonded gravel surface: - Non-woven geotextile fabric - LSG Load Support Grid - Stapler to connect the grids together (if needed) - Stone infill - Washed and dried decorative stone - Gravel-Lok




Why do I need to use a non-woven geotextile fabric?


Not only does the fabric work as a weed barrier, its main purpose is to keep the infill stones inside the cells from migrating further down into the earth. Do not use the fabric if the top surface will be grass or planted. Use Triax geogrid instead which will allow the roots to grow.




Do I need to connect the grids together?


Yes, connecting the grids together will ensure a continous matrix of cells without any weak areas. If your project is small, you can drill holes and use 1/4" zip ties to connect each grid. If it's a larger project, we offer either a wide mouth or pneumatic stapler to make the connections faster.




What is the lifespan of LSG Load Support Grid?


LSG is made from HDPE plastic which will take at least 100 years or more to break down and decompose. It will last a lifetime!




When do I need to use Rebar J-Hooks?


Rebar J-hooks are needed when the top surface will be loose gravel or grass. This ensures the grid is pinned down and secured to the earth. If J-hooks are not used, stones could undermine the grid lifting it up over time. The J-hooks are not needed if using pavers or Gravel-Lok.




Where can I buy your products?


We have authorized dealers throughout the country. Please visit the dealer section of our page, enter your zip code and local dealers will appear. If there are no dealers in your area, we can ship directly to you. Please give us a ring at the office. 410-721-4844 or email info@celltekdirect.com




I'm installing Load Support Grid in a grassy paving application, do I need a gravel base below the Load Support Grid?


No. Unlike other grassy paving systems on the market, our grid is an "all-in-one" system. You do not need to install a gravel base below our grid.




How can I keep the grid spread open until I fill it?


Use rebar stakes around the perimeter to keep the grid open before and during filling. Once filled, remove the stakes and re-use them. If your application requires J-Hooks, you can use the J-Hooks in place of the stakes. Do not remove J-Hooks.




What is the minimum order quantity?


You can purchase as little as one grid (9' x 24', 215 sf).





SlopeGrid

What size is SlopeGrid?


Each panel of SlopeGrid expands to 8' x 29' (232 sft) and comes in two cell depths, 4" and 6" depths.




Where can I buy your products?


We have authorized dealers throughout the country. Please visit the dealer section of our page, enter your zip code and local dealers will appear. If there are no dealers in your area, we can ship directly to you. Please give us a ring at the office. 410-721-4844 or email info@celltekdirect.com




Does it matter what direction I install SlopeGrid?


YES! SlopeGrid consists of long strips that are welded together at intervals. The long strips need to be parallel to the hillside.




What if I have a slope that I will drive on?


SlopeGrid does not provide load support. Therefore it is not recommended for areas that will be driven on. Our LSG Load Support Grid would be a better option. Please give us a ring at the office so we can learn more about your area and determine which is the appropriate product for your project. 410-721-4844 or info@celltekdirect.com




What accessories do I need for my slope?


Each project is different. Some may require engineering advice with all accessories or simply just j-hooks. We offer all accessories needed for your specific project. Note you should always consult with an engineer to determine your project's needs.




I can't afford a retaining wall, can I use SlopeGrid instead?


YES! SlopeGrid is an excellent alternative to a retaining wall for slope protection and erosion control.




What do I use to fill the SlopeGrid cells?


One option is to fill the cells with soil and then plant vegetation. The other option is to fill the cells with rocks. In this case, install a non-woven fabric below the grid to ensure the rocks do not migrate into the earth over time.




What is the lifespan of SlopeGrid?


LSG is made from HDPE plastic which will take at least 100 years or more to break down and decompose. It will last a lifetime!





Gravel-Lok

Can I install Gravel-Lok without the LSG Load Support Grid below it?


We recommend our Load Support Grid becuase it provides a durable, economical foundation for any pavement. If you are installing a garden path with minimal use, there is no need to install the grid below the Gravel-Lok surface or if you are installing Gravel-Lok in stonescaping applications between trees and shrubs, there is no need for the grid.




Is Gravel-Lok permeable?


Yes. Gravel-Lok surfaces are porous (permeable), allowing water to pass through at a flow rate of 20 gallons per minute per square foot with 3/8" stone. This is the same flow rate of porosity as loose gravel.




Do I need to use Gravel-Lok pebbles with Gravel-Lok liquid?


NOTE WE HAVE DISCONTINUED GRAVEL-LOK PEBBLES. No. You can use any local pebbles which are 1/8" in size up to 2-1/2" in size. Be sure to clean and dry the stones well! Avoid decomposed granite or any stones that fracture easily. For wheel chair compliance, use gravel which is 1/8" up to 1/2".




How does Gravel-Lok perform in extremely cold climates?


Gravel-Lok surfaces have a slight flexibility which is similar to asphalt. It can withstand extremely cold temperatures and frequent freeze and thaw cycles. Keep in mind that Gravel-Lok surfaces are completely porous, therefore, drainage must be considered. Make sure the water can flow away from the area via proper grading, installed drains, or both. If water remains in the system and freezes and thaws, this will cause heaving and cracking. If designed properly, with drainage in mind, the Gravel-Lok surface will perform well in cold temperatures and areas with extreme freeze and thaw cycles. NOTE: Snow plowing and shoveling can damage the Gravel-Lok surface. Patching and repairing may be necessary in the Spring.




How much Gravel-Lok do I need?


The coverage rate for the recommended "mix method" is about 93 square feet per five gallon container (18 - 19 sft per gallon). This is based on mixing 20 oz. of liquid with a 5 gallon bucket of pebbles and troweling it out at 2" thick. The mix ratio may vary depending on stone size and absorbency. It is highly recommended that 1 - 2 roll coats are added 24 hours after curing. coverage rate for each roll coat is 450 sft per five gallon container (90 sf/ gallon). Apply with a medium nap foam paint roller. Allow 24 hours to cure between each roll coat.




What is the difference between Clear and Amber Gravel-Lok?


The durability is the same but Clear and Amber are two different formulas. CLEAR has UV additives, it will not affect the color of stone, and results in a shiny, wet look. AMBER will alter the color of light or white colored stones, and generally has a matte look. If stones are light, the amber color may intensify over time and fade off to reveal the natural surface color of each stone. Amber is considerably less expensive than the Clear formula.




My stones are already in place. Do I need to remove them to mix with Gravel-Lok?


While mixing Gravel-Lok with pebbles is our preferred installation method, it is possible to SPRINKLE stones that are already in place with Gravel-Lok. Please give us a ring at the office to discuss this installation further. 410-721-4844 or info@celltekdirect.com




Can I use a sprayer with Gravel-Lok?


NO! Gravel-Lok liquid is too thick to use in a sprayer. If not using mix method of installation, you can use something like a small squeezable bottle, watering pail or our Gravity Wand to sprinkle the liquid over stones. Do not pour directly out of the container! Applying too much liquid at once will cause a serious foaming issue.




What type of maintenance is required with Gravel-Lok?


Depending on usage, a certain percentage of stones will come loose over time. Depending upon your tolerance for loose stones, maintenance in the form of patching and / or roll coats will be necessary. Public spaces will require more frequent maintenance. Over time, a certain percentage of stones will come loose. Typically, about 1% of stones will come loose annually and this rate will increase with pedestrian or vehicular traffic. If the
installation is located in a public space, the rate of loose stones will be even higher. The use of bikes, skateboards, roller blades, wheelchairs, luggage with wheels, shopping carts, etc. will increase the rate of loose stones. If there is patio furniture you may notice an increased number of stones coming loose where people pull in their chair and it drags across the surface of the pavement. Even high heeled shoes can cause additional stones to come loose.
In the event of vehicular traffic (golf carts, forklifts, snow plows, lawn equipment, cars, etc.) a greater percentage of stones will come loose due to the pressure and traction of tires gripping the surface, especially where tires turn.




How do I know if my stone is dense enough for use with Gravel-Lok?


Wear goggles. Take pliers and squeeze the stone to break it. If it shatters like glass into chunks, that's good, and you can use Gravel-Lok. If it pulverizes and creates a chalk-like dust, this is not good. Gravel-Lok should not be used with this stone.




What container sizes does Gravel-Lok come in?


We offer 3 sizes: 1 gallon container 5 gallon container 50 gallon drum




How do you get Gravel-Lok out of the 50 gallon drum?


Turn it on its side on a pallet. "Chalk it" by nailing wooden "stops" to the left and right of the drum so it can't roll away. Insert a plastic valve to top of the drum. You will need to open main opening of drum to allow air in so liquid can flow out of the valve. Don't use drum pumps. The thick liquid makes it impossible. Another option is to screw in a 3/4" threaded pipe and put a valve on it.




Can I apply Gravel-Lok to stones already in place between flagstones?


Yes. First make sure the stones are clean and dry. Using a small spout container, like a squeezable style condiment bottle with 1 single small spout at the top, carefully apply liquid.** Avoid getting Gravel-Lok on adjacent surfaces as it will leave an unsightly stain! **TIP: Have a piece of plastic or heavy cardboard / plywood handy to quickly put under the bottle when you turn it right side up to catch drippings. You can always give us a ring at the office if you have more questions.




How can I remove Gravel-Lok liquid from something?


Avoid getting Gravel-Lok on adjacent surfaces because it is nearly impossible to remove it and will leave an unsightly stain. If Gravel-Lok is still wet (not yet cured) then acetone could be used to remove it. If Gravel-Lok has already cured, a paint / stain varnish remover can work in some instances on smooth flagstones, concrete, or brick. Apply the stain / varnish remover to the area, let it rest for 5 minutes, then use a wire brush to remove the stain. It may be necessary to repeat this process.




I see Gravel-Lok sold on Amazon. Is this the right product for me?


We sell a kit on Amazon for the DIY'er needing to bond pebbles in the joints between flagstones. This is a complete DIY kit which includes: - 50 lbs of washed stone (choice of River Gravel or Pea Gravel) - 24 oz. of Gravel-Lok Clear liquid - Plastic scoop Coverage rate of the kit: Approx. 375 - 400 linear feet of joints which are 2" W x 1" deep. Alternately, another way to approximate coverage is to assume the kit will do approx. 40 - 50 square feet of joints in a patio with flagstones that are approx. 20 to 24" length x 20" - 24" in width and joints 2" wide x 1" deep. Note: if you use the kit for a different purpose other than joints, then the coverage rate is approximately 4.6 square feet at 1" thick or 2.3 square feet at 2" deep. If your project is larger, please give us a call directly to purchase the liquid in volume without the pebbles.




Where can I buy your products?


We have authorized dealers throughout the country. Please visit the dealer section of our page, enter your zip code and local dealers will appear. If there are no dealers in your area, we can ship directly to you. Please give us a ring at the office. 410-721-4844 or email info@celltekdirect.com




How does Gravel-Lok perform in extremely hot climates?


Gravel-Lok is not affected by extreme heat.




Can I use my snow plow on a Gravel-Lok surface?


Using a snow plow or shovel over top of Gravel-Lok can damage the surface causing loose stones or pits. Patching and repairing may be necessary in the Spring. A snow blower can be used safely.




What can I do to melt ice on my Gravel-Lok surface?


The removal of ice and frost from the surface can be achieved by the application of salt or other ice melting products. The area can also be treated prior to prevent freezing from occuring in the first place. When the weather returns to normal (non-freezing), wash with cold water to remove the salt from the surface.




Do I need to do a roll coat?


It is highly recommended that you do a roll coat. The application of roll coats ensures the top surface has been coated with Gravel-Lok. This will help to strengthen and preserve the bonded surface. Pour Gravel-Lok liquid in a paint tray. Using a medium nap foam paint roller, apply a thin coat of Gravel-Lok over the entire surface. Allow 24 hours to fully cure after applying the roll coat. Multiple roll coats are recommended in high traffic areas. Coverage Rate for Each Roll Coat: One five gallon container of Gravel-Lok will cover 400-500 square feet. (One gallon container will cover 80 – 100square feet)




How do I store Gravel-Lok?


Gravel-Lok should always be stored in a temperature controlled environment for up to 1-1/2 years. If container has been used and is not full, transfer remaining liquid to a smaller plastic container or bottle, minimizing the amount of air in the container.




Can I install Gravel-Lok when it's cold outside?


The temperature should be above 50 degrees F for at least 12 hours after installation. Rain cannot be in the forecast for 24 hours when planning your Gravel-Lok installation. If a pop up storm happens, DO NOT cover the area with a tarp. This will cause a greenhouse effect and the liquid will not cure properly.




What if rain is in my forecast? Can I still install Gravel-Lok?


Rain cannot be in the forecast for 24 hours when planning your Gravel-Lok installation. If a pop up storm happens, DO NOT cover the area with a tarp. This will cause a greenhouse effect and the liquid will not cure properly. The temperature should be above 50 degrees F for at least 12 hours after installation.




What if I spill Gravel-Lok on pavers or flagstones?


Gravel-Lok will leave an unsightly stain on pavers or flagstones. Avoid spilling or dripping it. You can use acetone to clean up the spill if you catch it immediately. Once cured, it may be impossible to remove it. Some people have had success with a product called Dad’s Easy Spray, a paint, stain, and varnish remover. Spray it on and allow it to sit for a few minutes and then use a wire brush to remove the stain. This process may need to be repeated.

Also, we do not advise coating pavers or flagstones with Gravel-Lok. It is not a sealant and it will cause those surfaces to become too slippery and hazardous to walk on.





Miscellaneous

What is your return policy?


Most items can be returned within a year with a 25% restocking fee. The customer needs to arrange for and pay for shipping back to our warehouse in Maryland. Gravel-Lok one and five gallon containers must be unopened, been stored properly, and the container in its original condition. Gravel-Lok drums are NOT returnable. Supersack pebbles are NOT returnable.




What is the difference between Cell-Tek and Gravel-Lok?


Cell-Tek Geosynthetics, LLC is the name of our company. We are the manufacture of LSG Series® Load Support Grids, SlopeGrid®, Verti-Cell and Gravel-Lok® liquid. Gravel-Lok® is the brand name for our liquid that bonds stones together.




When will my order ship?


Most orders ship out in 24 hours from our Linthicum, Maryland warehouse. We do not stock Gravel-Lok drums. These are made to order so the processing time can take 3 - 7 days depending on the volume. Gravel-Lok Pebble Supersacks have a minimum order quantity of 15 tons and will take 3 - 4 weeks to process. J-Hooks are made to order and may take 7 - 14 days to process.




What are your hours?


Monday through Friday 8:00 a.m. - 4:00 p.m. Eastern Standard Time. Our dock closes at 3:30.




Where can I buy your products?


We have authorized dealers throughout the country. Please visit the dealer section of our page, enter your zip code and local dealers will appear. If there are no dealers in your area, we can ship directly to you. Please give us a ring at the office. 410-721-4844 or email info@celltekdirect.com




Can I order online from your website?


We do not currently have an online store on our website. Give us a ring to place your order 410-721-4844.





© 2020 Cell-Tek Geosynthetics, LLC. 

809 Barkwood Court | Suite M | Linthicum, Maryland 21090 

info@celltekdirect.com | 410-721-4844

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