JM Evalith: The white fabric liner shown above sits at the floor of the bunker. Washouts may get more attention, but every bunker will contaminate. It’s just a matter of time. Nature’s forces are certain and predictable. Precipitation, no matter how slight, will force larger particles in a substrate to the surface. Larger particles can be present in native soils or brought in as gravel forming the drainage system. In either case, a barrier should be present to combat migration. Used primarily in hybrid configurations, JM-Evalith is best used in very flat areas of the bunker. This allows more robust styles of liners to fight washouts caused be rain and irrigation.
Capillary Concrete: The permeable concrete used around the faces of the bunkers are great at combatting wash outs caused by rain and irrigation. It also has a long lifespan and can last about 20 years when maintain appropriately. The reason it is installed only on the edge of the bunker may raise some questions...
"The Capillary Edge guarantees that the bunker’s shape will remain true to its original design throughout its lifespan. This stability reduces the crew’s need for edge trimming and negates the necessity for remodeling or reshaping bunker edges every decade. Thanks to its proprietary Capillary Material, the Capillary Bunker Liner excels at swiftly draining excess water while simultaneously retaining the right amount of moisture. This ensures impeccable playing conditions in any weather and across all terrains, while also preventing the washouts and maintenance headaches typically associated with bunker upkeep."