MarShield’s plywood is laminated with sheet lead that is designed to cover necessary surfaces or walls in a room requiring radiation shielding. It is affixed to surfaces or walls ensuring a continuous layer of sheet lead, under the plywood, to a specified height. It is used in new construction or shielding upgrade/renovations for P.E.T and other types of diagnostic imaging rooms and to fill the void between lead-lined drywall and interlocking lead bricks.
Lead-Lined Plywood Product Details
MarShield starts with a piece of sheet lead meeting or exceeding Federal Specifications QQ-L-201F, Grade C, ASTM B-749-03 Standard Specification for lead and lead alloy strip, sheet, and plate products. The lead sheet is 99.9% pure or better of un-pierced virgin lead, free of dross, oxide inclusions, scale, laminations, blisters and cracks and is factory laminated to plywood panels. The Plywood is available in 5/8” to 3/4” in thickness with a lead thickness of 1/16” to 1/2″ or more. The Fire-Retardant Plywood conforms to AWPA C27 type A. – Sanded and good one side.
Lead-laminated to plywood is applied in 48” widths on equal plywood widths up to 96” lengths. 2” wide batten strips can be supplied to cover all joints where applicable. Lead-lined plywood is typically recommended for heavier lead shielding requirements, usually when the lead shielding exceeds 1/8” thick. Lead-lined plywood at these thicknesses becomes very heavy to handle in full sheet form (4’ x 8’). We recommend having us cut the lead-lined plywood into widths that are equal to your on-site stud dimensions (e.g. 12” or 16”). This will make the lead-lined plywood much more manageable for the installer.
1 sheet of 3/4 ” x 4’ x 8’ plywood with 1/4 ” lead lining to 7’ weighs approx 505 lbs.
1 sheet of 3/4 ” x 16” x 8’ plywood with 1/4 ” lead lining to 7’ weighs approx 168 lbs
Smaller panels will require more batten strips but the ease of handling these lighter panels will be offset in the extra cost and labor during the installation process. Similar to leaded drywall, the installer will need to take into account the loss of shielding in all penetrations, seams and cut outs in the leaded plywood. Shielding will need to be added to all receptacle switches, fasteners penetrations and seams created when applying the leaded plywood. In the majority of installation jobs the leaded plywood panels can be mounted directly to the metal studs with standard drywall screws. Leaded plywood panels may be used in the ceiling but may require additional support of fasteners to hold the panels to the ceiling.
|Product Category||Surface and Corrosion Protection Products|
|Product Name||Lead Lined Plywood|