Well-Seasoned on All Forms Of Radiation Shielding

Frequently Asked Questions


Shipping and Shipment Related Questions:

Q: How do you ship your product?

A: It depends on the product and the quantity. One piece of lead glass and/or lead lined view window frame, or one lead lined door and/or door frame, would typically ship LTL on a common carrier trailer. If these items are shipped with a quantity of lead lined drywall or lead lined plywood, then we would typically ship it on a flat bed truck if the drywall quantities justified it (35 or more). For orders of 35 sheets or more of lead lined plywood or lead lined drywall, we will ship these orders on a flat bed truck.

Q: Where are my strips and plugs? I only see the pallet with my lead lined drywall.

A: We ship them under the cardboard covering on the top of the pallet containing the lead lined drywall. You should locate them if you remove the banding and lift up the cardboard covering.

Payment related questions:

Q: What type of credit cards do you accept?

A: Visa, MasterCard, AMEX, Discover, Diner's Club, and JBC.

Q: What are your payment terms?

A: We offer net 30 upon approved credit

Product related questions:

Q: What is the thickest lead you can put on drywall?

A: We do not recommend putting lead that exceeds 1/8” thickness because it is hard to handle and it is hard on the drywall.

Q: What is the thickest lead you can put on plywood?

A: We do not like to exceed ½” thick lead on ¾” plywood, and at that thickness, we recommend cutting the sheets down to 16” wide pieces.  If 5/8” thick lead needs to be laminated to ¾” plywood, we recommend cutting it the sheets down to 12” wide pieces.

Q: How thick is the leaded glass (x-ray glass)?

A: RPP’s 1.6mm (1/16”) to 2.0mm (5/64”) lead equivalent glass is 5/16” thick. Our 2.5mm (3/32”) lead equivalent glass is 3/8” thick. Our 3.2mm (1/8”) lead equivalent glass is ½" thick.

Product installation related questions:

Q: What type of product should I use to keep the glass from touching the frame when installing leaded glass?

A: We recommend double sided foam glazing tape. We have seen customers utilize other products such as glazing putty or neoprene and they seemed to work just fine as well.

Q: How does your lead angle system work?

A: The lead angles replace the need for any strips or plugs. A lead angle would be placed on every stud (not just the studs where there is a joint) with one addition angle placed in the corner (see angle detail). Although there is more material in utilizing the lead angle system, on larger jobs (40 sheets or more), you can save on labor time by eliminating the lead discs.

Q: How do you install the lead plugs? Do I need the lead plugs?

A: The method we recommend is to set your drill gun to countersink the fasteners slightly deeper than you would usually, but not so deep that you break the drywall paper. Then use any type of construction adhesive on the head of the fastener and push in your lead disc. It should pop into place with a little force. The lead disc is purposely larger than the head of the fastener to ensure proper shielding. In some cases it helps to use a rubber mallet to flush out the disc and the drywall. This makes life a little easier for the individual doing the mud and taping.

The NCRP revised their report #147 to state that lead discs are not required on typical lead lined drywall applications. This means for lead lined drywall with lead at 1/16” thick or less, you do not need the lead discs if you are using a standard coarse drywall screw. That section of the report is available for you to download here. Please note, you must have a licensed physicist or the owner sign off.

*** Please note: we are the manufacturer only. Each job site may have unforeseen circumstances that would make the above answers inapplicable. RPP makes no claim to the substantiality of the answers above and is in no way liable for the installation that takes place.