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Modular Radiation Shielding Units

ShieldBLOCK® pre-fabricated modular radiation shielding units offer factory controlled quality and the ability to be installed virtually anywhere at any time.  ShieldBLOCK®  pre-engineered kits come complete with everything you need, to shield your linear accelerator vault or treatment room, including installation. NSS will custom formulate the most affordable solution for you using our wide selection of minerals. ShieldGROUT® high-density mortar and grout is an equivalent density complement to ShieldBLOCK® systems.

NSS high density ShieldBLOCK®  and ShieldGROUT® are commonly used for linear accelerator vault upgrades or additions where a higher energy machine is replacing an older unit or where a new machine in being installed in an unshielded or under-shielded room. Depending on the situation, we manufacture and carry a space-saving block type and density for any circumstance.

Chevron-type high density ShieldBLOCK® interlock with each other on all four sides, preventing radiation from streaming through. They are popular for their ease of installation and for the fact that they are assets which may be depreciated, moved, and reused if necessary.

Solid rectangular high density ShieldBLOCK® and equivalent density ShieldBLOCK® can be installed by local masons using standard masonry techniques. 2-core high density CMU ShieldBLOCK®  provides structural value in construction when used with sufficient rebar and equivalent density ShieldGROUT® to fill the cores. They provide the same structural benefits as poured or pumped high density concrete for supporting loads and resisting forces.


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