Protective Wall Systems

RAY-BAR LEAD BACKED GYPSUM WALLBOARD is furnished as 1/2" and 5/8" Fire code gypsum board meeting Classification ASTM C 36, with pure lead sheet meeting Federal Specification QQ-L-201 f, Grade C, factory laminated under pressure to the back side of the gypsum panel.
Custom manufactured to customers specifications, typically available in one day/next day.
Shielding accessories for installation include a 2" wide lead batten strip for vertical joints and corners along with lead tabs or lead discs for screw penetrations, lead head nails for wood stud installations and sheet lead for backing and shielding of cut-outs for electrical, plumbing, medical gas or other penetrations.

Sheet lead backing must be equal or greater value as the lead in the wall partition that penetration occurs in.

For listing of In-Stock lead thickness' available, see RAY-BAR Sheet Lead Thickness Chart. For specifications, see RAY-BAR LEAD BACKED DRYWALL SPECIFICATION. Shielding requirements should be determined by a qualified health radiation physicist, SEE SHIELDING INFORMATION

Per the current NCRP Report #147(2004)1.5 General Concepts,states:
"Radiation shielding shall be designed by a qualified expert to ensure the required degree of protection is achieved".

"The qualified expert should be consulted during the early planning stages since the shielding requirements may affect the choice of location of radiation facilities and type of building construction.The qualified expert should be provided with all pertinent information regarding the proposed radiation equipment and its use,type of building construction,and occupancy of nearby areas. It may be necessary to submit the final shielding drawings and specifications to pertinent regulatory agencies for review prior to construction".

"The term "qualified expert" used in this report is defined as a medical physicist or medical health physicist who is competent to design radiation shielding for medical x-ray imaging facilities.The qualified expert is a person who is certified by the American Board of Radiology,American Board of Health Physics,or the Canadian College of Physicists in Medicine".

*Please Note the above uses of the word "shall" is a requirement, and use of the word "should" is a recommendation.
*NCRP is the "National Council of Radiation Protection". *NCRP report #147 supersedes the previous NCRP report #49.

RAY-BAR FIRE-RATED LEAD BACKED 5/8" GYPSUM WALLBOARD (Type RB-LBG) also available as U.L. Labeled and Classified to U.S. and Canadian Safety Standards for 1 hour and 2 hour fire-rated partition applications (See complete marking on product) in 8 standard lead thickness shielding values from 1/64" and up to 1/8" and minimum 7'0 (84") high and approved in 12 unique wall partition designs and many combinations on over 7 different wall board types where two or more protective aspects are required such as x-ray protective/fire-resistant and additionally moisture-resistant, mold-resistant, abuse-resistant, security or other applications available as required or specified by your project architect, or CONTACT US directly for additional proprietary information. RAY-BAR fire rated lead backed gypsum wallboard is typically available in only one day or next working day and can also be delivered directly to your hospital facility or medical center project anywhere in the United States and Canada. 

Regulatory authorities, code enforcement personnel and responsible builders value the UL mark and UL's experience as a leader on safety issues. With public safety at the heart of UL's mission, UL acts as a safety resource and advocate for proper building and construction material safety code compliance. With 110 years as one of the world's leading product safety testing and certification organizations, Underwriters Laboratories (UL) is synonymous with safety. Its UL Mark is the most recognized and trusted symbol of safety in the world, and Ray-Bar is proud to have earned the right to bear the UL mark on its products.
Ray-Bar is also proud to be the original designer and manufacturer of successfully tested,certified and genuine UL labeled and code compliant fire-rated lead backed gypsum drywall for 1 hour and 2 hour rated radiation shielded walls and partitions,exclusively for use in medical and hospital x-ray diagnostic imaging applications. At Ray-Bar we truly believe in "Radiation, Fire and Public Safety through strict and knowledgeable code compliance". Always insist on proper testing,third party certification,strict code evaluation and proper labeling on all of your projects x-ray shielding materials and assemblies.

Shielded Wall Access Panel

Shielded Ceiling Access Panel

Shielded Vent Cover

ACCESSORIES FOR SHIELDED WALLS (for metal or wood stud framing systems) 

* DISKS/PLUGS/CAPS/TABS (for screw fastener penetrations)
* BATTEN STRIPS (for vertical joints)
* 90° ANGLE STRIPS (for inside or outside vertical corners)
* SHEET LEAD BACKING MATERIAL (for any wall penetrations)
* SHIELDED ACCESS PANELS (for maintenance access openings)
        Standard sizes: 12" x 12",16" x 16",18" x 18" and 24" x 24"
* SHIELDED FLOOR THRESHOLDS (for under doors)
        FOR ADDITIONAL TECHNICAL, INSTALLATION , DETAILS OR MATERIAL INFORMATION
        AND AVAILABILITY PLEASE CONTACT US

* ALL PARTITION LEAD SHIELDING MUST BE BONDED TO RIGID PANELS DRYWALL/PLYWOOD
   TO PREVENT "COLD-FLOWING".

* LEAD BACKED DRYWALL LEAD SHIELDING MUST BE MINIMUM 7'0" (84") HIGH (more may
   be specified by your physicist).

* ALL LEAD BACKED DRWALL MUST BE INSTALLED VERTICALLY (4'0" WIDE X _).

* ALL PENETRATIONS MUST BE BACKED WITH SHEET LEAD OF SAME THICKNESS AS REQUIRED FOR
   WALL/PARTITION THEY OCCUR IN. (Penetrations included electrical boxes, outlets, conduit, pipes,
   plumbing, ducts, medical gas lines, HVAC, air, ETC...)

* ALL FRAMING IS BY CUSTOMERS LICENSED CONTRACTOR AND IF METAL STUD SYSTEM MUST BE
   MINIMUM 20GA STEEL STUD OR GREATER. ( I.E. : 18GA, 16GA, 14GA ...) AND NO MORE THAN 16"
   ON CENTER SPACING OR LESS (I.E. : 12" ON CENTER) FOR PROPER SUPPORT.

* STANDARD STEEL SCREW FASTENER SPACING WILL APPLY PER CODE (8" ON CENTER PERIMETER
   AND 12" ON CENTER FIELD U.O.N.).

* STEEL SCREW FASTENER TYPE MUST BE MINIMUM 1-1/4" LENGTH TYPE S-12.

* HAVE YOUR LICENSED PROJECT STRUCTURAL ENGINEER REVIEW AND SPECIFY FRAMING SYSTEM
   AND FASTENERS REQUIRED FOR ALL WEIGHTS, PROPER STRUCTURAL SUPPORT, LOAD, SHEAR,
   SEISMIC AND ALL OTHER CONSIDERATIONS AS REQUIRED BY CURRENT BUILDING AND SAFETY
   CODES, LAWS AND REGULATIONS AS REQUIRED AND APPLICABLE IN YOUR AREA.

DESIGN/BUILD 6mev and 18mev Linear Accelerator Oncology Center

RAY-BAR Lead Backed Shielding is also available laminated on 15/32" or 23/32" thick Fire-Resistant Treated Plywood upon customers request. (This product is recommended for heavy shielding applications for added structural value,please consult with your structural engineer for proper specifications)

Fire-Resistant Treated Plywood is pressure impregnated deep into the wood to provide a permanent fire-resistant protection, unlike "coatings", which only provide superficial protection.

When Fire-Resistant Treated wood is exposed to fire, non-combustible gas and water vapor are produced, and a layer of protective char forms, which hinders combustion and insulates the wood against further damage.

Interior grade Fire-Retardant Treated wood has a low rate of fuel contribution and heat release, and it maintains structural integrity longer than other building materials such as steel.

Fire-Resistant Treated Plywood meets the flame spread requirement of all building codes which is 25 or less, as determined by Underwriters Laboratories in the extended 30 minute duration of ASTM E-84, "Standard Test Method for Surface Burning Characteristics of Building Materials." Each piece of treated wood bears the Underwriters Laboratories Classification mark identifying it as being produced under its Classification and Follow Up Services.

Fire-Resistant Treated Plywood is often approved as a substitute for non-combustible materials in applications such as wall studs systems and offers additional structural strength.

Please CONTACT US directly for more specific and detailed information on compliance with National, Uniform and Standard building codes

* IMPORTANT NOTE: Fire Resistant Treated Plywood should not be confused with fire-retardant surface "coatings", because test requirements and code definitions are entirely different for each. Fire Resistant Treated Plywood is pressure impregnated and carries a flamespread rating derived by Underwriters Laboratories in the 30 minute ASTM E-84 flamespread test, while coatings are sprayed, brushed or rolled on the surface and flame tested for only 10 minutes. Fire retardant "coated" wood is superficially protected at best, and it does not meet code requirements for structural uses.

LEAD BACKED BULLET RESISTANT PANELS
Available in Level 3 Bullet Resistance,and laminated in all 12 standard lead thicknesses in sheet sizes up to 48" x 96".
Contact Ray-Bar for additional information.

* RAY-BAR LEAD BACKED PLYWOOD (fire resistant treated plywood upon request) and other lead laminated panel products, such as steel, stainless steel, and aluminum are also available. Please see OTHER PRODUCTS.

* PURE LEAD PLATE for high energy gamma radiation shielding wall systems in new or existing retrofit applications

* PURE LEAD BRICK for high energy gamma radiation VAULTS

* BORATED POLYETHYLENE (5%) for thermal neutron radiation shielding wall systems

RETROFIT SHIELDING SOLUTIONS
Ray-Bar exclusive lead lined covers and products for electrical and plumbing penetration retrofit shielding applications.

All calculations for shielding requirements should be determined by a qualified health radiation physicist currently recognized by the state in which the project occurs. Please see DIAGNOSTIC RADIATION SHIELDING CONSIDERATIONS for more information.

THESE MATERIALS ARE NOT FOR RESIDENTIAL USE OR APPLICATIONS

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THESE PRODUCTS AND MATERIALS ARE FOR MEDICAL AND INDUSTRIAL USE AND APPLICATIONS ONLY
(NOT TO BE UTILIZED FOR RESIDENTIAL APPLICATIONS)