Lead Lined Drywall
Lead lined sheetrock is gypsum board that is laminated with sheet lead to provide shielding from high level radiation. Lead walls are installed in diagnostic imaging rooms to provide protection from x-ray and gamma ray radiation, and are used in laboratories and industrial x-ray applications.
Lead Lined Sheetrock (Gypsum Board) for Radiation Shielding
Using lead walls provides a permanent solution for radiation shielding and offers more effective protection than partitions and mobile forms of shielding. This is especially important for treatment rooms and other applications where employees are at risk of prolonged radiation exposure.
Advantages of installing gypsum board with lead lining include:
- Provides effective floor-to-ceiling radiation protection
- Offers design flexibility for use in walls, floors and ceilings
- Reduces risk of radiation leakage when properly installed
- Available in varying thicknesses to meet a wide range of shielding requirements
Lead Backed Gypsum Board type: RPP – Lead Lined Drywall
Lead Lined Drywall Manufactured to Meet Your Shielding Requirements
Radiation Protection Products uses only Fire Code Sheetrock in our lead lined drywall products and our lead lining is made from the purest lead available. Our lead lined gypsum board is offered in 1/2" or 5/8" gypsum board, with custom sizes available. Lead lining is offered in thicknesses up to 1” and can be double layered for high radiation applications. For installation of your lead board, we also provide 2" lead strips of the same thickness and height of your lead sheeting for sealing vertical joints, and 3/8" diameter lead discs for covering screw penetrations.
For specialty radiation shielding applications, we offer the option of lead lining bonded to moisture and mold resistant gypsum board. Our lead can also be laminated to most of your drywall requirements including, but not limited to, the following:
- Impact resistant wallboard
- Fire rated wallboard
- And virtually all USG, National Gypsum, Temple Inland and Georgia Pacific products
Industry Specifications for Lead Lined Sheetrock and Lead Sheeting
Radiation Protection Products provides sheet lead and gypsum board that meets or exceeds various industry specifications to ensure top quality radiation shielding products.
The sheet lead used in our lead lined gypsum board meets or exceeds the following:
- Federal Specification QQL-201 F Grade C for Lead Sheet
- ASTM B749-03 Standard Specification for Lead and Lead Alloy Strip, Sheet and Plate Products
- NCRP reports #33, #35, #49 and #147 for Radiation Protection
All gypsum board used in our lead lining products meets or exceeds the following specifications:
- ASTM C1396 Standard Specification for Gypsum Board
- ASTM C840 Standard Specification for Application and Finishing of Gypsum Board
- Federal Specification SS-L-30D Grade X Type III or Gypsum Board
Installation Requirements for Lead Lined Drywall
Lead lined gypsum board consists of a single unpierced sheet of lead laminated to the specified thickness of the drywall. The lead board bonding is accomplished with a continuous layer of mastic adhesive. To fully support the weight of the lead, we recommend using 5/8” gypsum board for your lead wall installation. If your radiation shielding application requires the use of lead sheeting exceeding 1/8” you will likely require lead lined plywood to properly support the weight of your lead wall.
Proper installation of lead lining is critical to prevent radiation leakage. To meet industry standards, all lead lined gypsum board should be installed with the joints running vertically from floor to ceiling.
- Fasten your lead lined drywall at a minimum of 8" on center at the edges of each sheet, and at a minimum of 12" on center at the intermediate studs with normal drywall screws.
- Apply 2" wide strips of sheet lead of the same lead thickness to each of the joint studs using a standard type of construction adhesive. These strips of sheet lead will provide the necessary 1" overlap with the adjoining sheets.
- Cover all fasteners with a lead disc 3/8” in diameter and equal in thickness to the lead laminated to the sheetrock to eliminate the possibility of radiation leakage at the point of fastening. The lead disks should be applied using a fast-drying construction adhesive.
Methods and Specifications for Installing Lead Walls
Refer to the drawings below for the typical methods of installing and fastening lead lined gypsum board.
Our details on cut-outs and penetrations also provides useful information regarding proper shielding of light switches, air ducts and other receptacles.