What is Mineral-Added HDPE Plastic Lumber?
LumbeRock™ is a solid material made from HDPE with a non-organic mineral added that makes LumbeRock™ stronger and decreases expansion/contraction common to all plastic lumber.

What colors does LumbeRock™ come in?
LumbeRock™ comes in 9 standard colors. LumbeRock™ colors are deep and vibrant, not pastel colors like you get from most decking materials on the market today. Our color is consistent all the way through the material. No matter which way you cut, router or if the material is scratched or gouged, the color is the same under the surface.

Will colors be the same from manufacturing runs?
Although we make every effort to make sure our colors are matched consistently from manufacturing run to manufacturing run, slight color variations may occasionally occur.

Can LumbeRock™ be stained or painted?
Stains or paint will not penetrate the surface of our material and will flake or peel if applied to LumbeRock™. LumbeRock™ is engineered as a maintenance-free material and that is one of the main reasons why people purchase LumbeRock™.

Does LumbeRock™ fade?
Sure, everything fades in direct sunlight, but LumbeRock™ fading is so slight, you will probably Never Notice any color change.

Is LumbeRock™ slippery when wet?
LumbeRock™ is produced with a slip resistant wood-grain pattern to help stop slipping when wet.

How long will LumbeRock™ last?
LumbeRock™ comes with a Limited Lifetime Warranty to not crack, splinter, peel or rot.

What kind of maintenance is needed?
LumbeRock™ is engineered to be maintenance-free. Other than cleaning the material, if you chose, you will never have to stain, seal, or spray for insects/termites.

What tools are needed during installation?
No special tools are needed during installation. LumbeRock™ cuts, routers and drills similar to wood.

Does the material expand or contract with temperature changes?
Yes, like all alternative wood materials on the market today, LumbeRock™ expands/contracts on the butt ends of the board and requires a small gap to allow for expansion/contraction. See our easy to read expansion/contraction chart under installation instructions.

How should I fasten LumbeRock™?
To fasten LumbeRock™ to the deck frame use stainless steel screws, counter-snap screws or use most standard fastening systems. See our installation section.

Do I have to pre-drill LumbeRock™ during installation?
No pre-drilling is necessary during installation. LumbeRock™ will not mushroom around deck screw heads or distort the surface.

What is the proper joist span?
5/4x6 we recommend 16” on-centers for residential and 12” on-centers for commercial/angle boards.
2 x 6 we recommend 24” on-centers for residential and 16” on-centers for commercial/angle boards.

Can LumbeRock™ be used for structural purposes?
LumbeRock™ is not to be used for deck framing that is off the ground but can be used as a base on a flat surface such as a cement patio.

Is LumbeRock™ mold and mildew free?
Mold or mildew will not penetrate the surface of LumbeRock™, however, mold or mildew may attach itself to surface dust/dirt on top of LumbeRock™. To clean the surface, hose off any spores. If needed, use mild soap and water.

Will insects or termites penetrate LumbeRock™?
No, LumbeRock™ is made of all non-organic material and has a hard non-porous surface.

Is LumbeRock™ an environmentally friendly material?
No harmful chemicals are used or emitted during the manufacturing process of LumbeRock™. You can put your cut scrap in the same recycling bins as you put your milk cartons.

Can I use LumbeRock™ in or around fuel docking areas?
No, the warranty becomes void if LumbeRock™ comes in contact with petroleum based products. Safety standards and most building codes require that alternative material be used in these areas. Refer to your local building codes for guidelines in what materials to use in these applications.

Is LumbeRock™ scratch resistance?
LumbeRock™ has a hard durable surface that helps prevents scratches. A light application of heat will help eliminate minor scratches. Call for instructions.

No Permanent Staining?
LumbeRock™ is easily cleaned should you have a spill like grill grease, ketchup, sun tan oils/lotions or ground dirt. Just use standard household cleaners. For the tough stains, use any standard deck cleaner available at your local hardware store.

Will I get splinters when walking on LumbeRock™?
No, LumbeRock™ will not splinter, crack or peel. We guarantee it for a lifetime. See our Limited Lifetime Warranty.

Is there potential for static electricity when walking on LumbeRock™?
Yes, as with most other synthetic decking products, given the right conditions, LumbeRock™ does come with the potential for the build-up of static electricity. We use static eliminators in our manufacturing process which dissipates the built up charge in the extrusion process. However, just like with carpet, the potential remains for further build-up of static electricity. We have found that over time static electricity dissipates. Hosing down your deck with a combination of Simple Green and water will also help to dissipate the static electricity.