Back to Home Presents... Rumber

An Environmentally Friendly Building Material

Rumber® is a truly remarkable product. This is a military grade material. And we mean that literally. We are currently selling to the U.S. Army for it's grenade training ranges. Previously they had a plywood wall along the trench to keep shrapnel  from flying back at the soldiers. Each day they had to rebuild 1000' of wall. They've been throwing grenades at a Rumber wall for over a year now without failure. This is TOUGH STUFF. 

Basically it is available in two forms:

  1. Extruded lumber profiles of S4S and T&G in 2x4, 2x6 and 2x8. Colors are black, gray and brown. Smooth and high traction (buffed) surfaces.
  2. Sheet goods: Thickness of 1/8" to 1/2"; a small variety of textures. Generally 4'x8' sheets but custom runs up to 77" wide and 144" long can be made.


Commercial & residential decking: Looks good, easy to clean, does not deteriorate in water or weather.

Safety Surfacing: Loading docks, boat ramps, boat docks, boardwalks, piers, working surfaces. Ski resorts, country clubs, restaurants, skating rinks.

Marine Environment: Sea-walls, landscaping timbers, fendering, docks, piers.

Highway: Guardrail systems, pedestrian walkways, railings.

Agriculture: Excellent for livestock areas, horses, cattle, dog kennels.

Trucking: Low-boy equip trailers, truck beds, trailer beds.

Construction: EXCELLENT mud sill material. Concrete forming, shoring.

And more!

Boards are made from masticated automobile tires and recycled high density polyethylene (HDPE - grocery bags, plastic bottles, etc.), blended and extruded into lumber profiles to suit your needs.

Rumber carries a warranty up to 25 years and has been tested under such extreme uses a decking for commercial truck beds and cattle trailers.

Custom dimensions and profiles can be produced to your specifications. Custom colors are also available.

Product Data:

Density / Specific Gravity ASTM D 792 g/cc .902
Modulus of Elasticity ASTM D 198 psi 28,000
Compression Strength ASTM D 143 psi 19,000
Perpendicular Compression Strength ASTM D 143 psi 23,000
Ultimate Tensile Strength ASTM D 143 psi 3,181
Coefficient of Thermal Expansion ASTM E 228 in / in C 1.1 x 10
Water Absorption ASTM D 1037 % .08
Self Ignition Temperature ASTM D 1929 F 620
Link to Product Brochure

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Castleblock can be reached at 1-800-672-7872