Lead Lined Doors, Windows and Frames

GENERAL INFORMATION:

MarShield™ offers a premium line of Lead-Lined Metal and Veneer Doors & Hollow Metal Frames that are manufactured to have an equal appearance to architectural designed doors and frames. Designed and constructed with the highest quality materials available and craftsmanship you would expect. Doors are designed to take into consideration the heavy weight that sheet lead imposes on them. They are constructed to support this extra weight, which will not detract from their appearance or radiation protection. The frames are designed to support the leadlined doors to provide a lead lined interface between the door and the lead lined wall in the adjacent walls. Usually they are attached to studs in the walls using a variety of techniques specifically designed to hold the door securely and prevent radiation shielding leakage. Frames are available in fully welded form or knock down style. For maximum support MarShield™ recommends a welded style vs. knock down type.

Most standard architectural hardware can be specified and used on the door and frame. The correct specification of the finishing hardware is critical to the success of the complete closure. Adequate hinging is required to carry the heavy loads imposed by the lead lining. Hardware that fits into openings in the door and frame should be suitable to maintain the integrity of the closure. Extreme care must be taken when applying any item to a lead lined door or frame that the fasteners do not penetrate
that lead lining.


MarShield™ offers a lead thickness up to a maximum of 1/8”. The Lead thickness is determined by the intended application of the product and the determination of thickness is the responsibility of the purchaser. For Hollow Metal Frames and Doors the lead sheet is applied to the inside of the skin of the door on the “pull” side. The Lead Sheet is applied to the face, rabbet, stop, and part of the soffit on the door rebate side of the frame. If frames are to be installed in drywall partitions, then the manufacturer should install the stud anchors. Ensuring the continuity of the lead lining in the frame and the wall is the responsibility of the frame installer.
Lead Shielding shall be of a continuous sheet of lead as specified. Meeting applicable standards which are 99.94% pure Lead - (ASTM B-29 / Federal Spec. # QQ-L-201). Sheet Lead will be unpierced free of defects, laminations, scale blisters, cracks or penetration. The amount of shielding necessary in a door or frame should be equal to the shielding required in the wall in which it is to be installed in. The Sheet Lead shall be shaped to fit into the frame contour and inserted in the frame. Lead Joints are welded together to insure continuity of shielding and to secure in place during transit and installation.

Hardware selection can be the toughest decision on the success of your installation process. The final hinge system has to be appropriately specified to handle the heavy weights that the sheet lead imposes on the door. Door hardware is usually specified and supplied by others. Hardware selection should ensure lead lining in its components are equal to the door and frame assembly.
Necessary precautions are needed in the field when installing the hardware to prevent penetration of existing lead shielding in door & frame.

TECHNICAL SPECIFICATIONS

INSTALLATION - Lead Lined Wood Doors

SITE STORAGE and PROTECTION of MATERIALS:

All materials must be thoroughly inspected upon receipt of goods. All discrepancies and/or damages shall be immediately noted and reported in writing to MarShield and on the freight bill of lading when received. It is then necessary to immediately notify the carrier's head office of any damages. File within 24 hours any claims for freight damages with this carrier. MarShield will happily assist however possible, when requested. All materials received shall be properly stored on blocks or skids with adequate clearance from floor with a covering that will allow adequate circulation around product. Free from any contact of water, moisture, or dampness on a flat, dry level surface. Room shall be properly ventilated to carry and dampness out of room. Avoid any exposure to direct sunlight, extreme heat source, and humidity or excessive temperatures.

INSTALLATION:

Do not start your installation in areas that still contain excessive moisture from wet plaster, or cement. Ventilation systems should be operational and functioning correctly. Allow doors to acclimatize to surroundings before actual installation.

The Frame should bet set plumb, square and level at the correct elevation. Ensure that the frame is adequately secured into the studded wall to properly support the door weight and size. Use a proper hinge system rated for door weight and size. MarShield recommends the use of pivot or continuous type hinges for all applications. When Butt hinges are to be specified and used they must be fully rated for the weight and size of the lead lined door. A minimum of three hinges should be used for doors up to 90” in height. For every extra 30” of door height add one more hinge or portion thereof. Follow all manufacturers' recommendations and guidelines for locations and quantities, when different to above. Fire labeled frames should be installed in accordance with local codes. Secure anchorages and connections to adjacent construction. Install door and frame hardware in accordance with hardware templates and manufacturers instructions. When supplied or specified install window lites into door, door silencers, and closures in accordance of industry standards and procedures. Consult with the site physicist to insure proper shielding is maintained at each opening.

WINDOW FRAMES: Telescopic, Welded & Split Type

MarShield™ offers a premium line of Lead-Lined Welded Hollow Metal Frames that are manufactured to have an equal appearance to architectural designed frames. Our frames are designed to provide the foundation and support for leaded glass or leaded acrylic. The frame provides a lead lined link between the glazing and the lead lined wall. Split type frames are available that allow the frames to be manufactured in two pieces. This allows the installer to fit the frame into the opening from both sides and fastened together to form a solid assembly.

Frames should be sized to suit the available window glazing dimensions. Lead Shielding shall be of a continuous sheet of lead as specified. Meeting applicable standards which are 99.94% pure Lead - (ASTM B-29 / Federal Spec. # QQ-L-201). Sheet Lead will be unpierced free of defects, laminations, scale blisters, cracks or penetration. The amount of shielding necessary in a door or frame should be equal to the shielding required in the wall in which it is to be installed in. The Sheet Lead shall be shaped to fit into the frame contour and inserted in the frame. Lead Joints are welded together to insure continuity of shielding and to secure in place during transit and installation.

The frames are installed into the wall studs using proven techniques to ensure against radiation shielding loss. When ordering frames for lead glass, please specify whether the width and height you provide are for the glass viewing area or the frame. E.g.: When specifying 12” x 12” the actual glass could be this size but not the viewing area. The frame can add a few inches all around and the glass sits inside of this frame. The 12” x12” can be taken as an inside frame size but is usually considered an outside frame size. A small sketch is usually the best clarification in ensuring there are no mistakes made.

INSTALLATION:

It is critical that the frame be installed by an experienced person who can ensure it to be plumb and square in the available opening that is provided. The frame must be securely fastened into place within the studded wall prior to the receiving of the drywall. The lead lined wall must then be built into the frame to effectively provide a shielding overlap for the lead in the face and throat of the frame.

ORDERING:

When ordering a MarShield™ door and frame it is critical that all necessary information be supplied. MarShield™ cannot be held responsible for insufficient or missing information. It is up to the purchaser to ensure that all necessary information is given to MarShield™ at time of quoting.

Considerations and information required when ordering:

Door Size - Exact Width & Height
Door Swing - See Swing Selector page
Lead Shielding - Thickness
Frame Type: Hollow Metal - welded or knock down type
Door Type: Metal face or Wood - Type of finish (veneer Birch, Oak, plastic laminate etc.)
Throat of Frame
Wall thickness and construction:
Wood Stud, metal stud, masonry
Type of Hardware required
- Door Closer
- Hinges & number - Pivot - Butt - Continuous -
(Hinge capacity must be verified for compatibility with door weight)
- Passage Set - Lock set or latch
- Labeled? (Fire rating)
- View Window (Size type and location)
- If ordering double doors specify which leaf is to receive astragal
- Any options, locations or pertinent information relevant to the ordering
- Brand, manufacturer preference
Note: It is necessary when supplying your own hardware to provide all the pertinent information on what you're using so we can ensure our door and frame prepping match your hardware requirements.

Lead Lined Doors and Hollow Metal Frames:

MarShield's Doors and Frames generally conform to the Canadian Steel Door & Frame Manufactures Association “Specification for Commercial Steel Doors and Frames 1989”

STEEL (A):
- Standard - Commercial quality
- Hot-dip galvanized to: ASTM A 653/A - A 653M - 99,
- Coating designation A25 (ZF75) - 0.25 oz/sq. ft. (75 g/sq. m.) minimum
- Total coating, forming quality to ASTM A 924 / A924M or A 90 / A 90M.
- This material is commercially known as paintable “Galvanneal”

18 Ga. .045” - (1.2 mm) for JD DW - Series Engineered Frames for 1-3/4” (45 mm) Doors
16 Ga. .057” - (1.5 mm) for JD DW or AS Series Engineered Frames for 1-3/4” (45 mm) Doors
14 Ga. .075” - (2.0 mm) for JD - Series Engineered Frames
20 Ga. .035” - (.91 mm) for LS - Series Standard & Engineered Doors
18 Ga. .045” - (1.2 mm) for LS - Series Standard & Engineered Doors
16 Ga. .057” - (1.5 mm) for LS - Series Standard & Engineered Doors
Hardware reinforcements and accessories of various gauges are detailed in individual product specifications.

STEEL (B):
- Optional - Commercial quality
- Hot-dip galvanized to: ASTM A 653 - A 653M - 99,
- Coating designation G90 (Z275) - 0.90 oz/sq. ft. (235 mm.) minimum total coating.

18 Ga. .045” - (1.2 mm) for JD DW - Series Engineered Frames for 1-3/4” (45 mm) Doors
16 Ga. .057” - (1.5 mm) for JD DW or AS Series Engineered Frames for 1-3/4” (45 mm) Doors
14 Ga. .075” - (2.0 mm) for JD - Series Engineered Frames
20 Ga. .035” - (.91 mm) for LS - Series Standard & Engineered Doors
18 Ga. .045” - (1.2 mm) for LS - Series Standard & Engineered Doors
16 Ga. .057” - (1.5 mm) for LS - Series Standard & Engineered Doors

DOOR CORES:

Standard (A) Paper honeycomb core - 2.4-lb./cu.ft. (40 Kg./cu.m.) density, 1” cell size, sanded for uniform thickness and maximum adhesion. Top caps & tack seams required on exterior doors.

Optional (B) Rigid polystyrene board - 1.0-lb./cu.ft. (16 Kg./cu.m.) density treated for flame retardance R=6 (RSI=1.0) U=.15

Rigid polystyrene board - 1.8-lb./cu.ft. (29 Kg./cu.m.) density treated for flame retardance. Requires tack welded seams. R=8.5
Rigid mineral board - 18-lb./cu.ft. (288 Kg./cu.m.)
Tempearture-Rise Rated for 450F (232C0 at 60 minutes.
R=3.25 (RSI=0.55) U=.31
20 Ga. -- .035” (.9 mm) minimum vertical steel stiffeners on 6” centers, voids between stiffeners filled with fiberglass (1.5 lb./cu.ft., 24Kg./cu.m. density).

Finishing The zinc-iron alloy surface of MarShield Doors & Frames provides an excellent substrate for finish painting.
Areas where the zinc-iron alloy has been removed during fabrication should be touched-up with rust inhibiting primer.
All surfaces should be free of dirt, grease or oil to optimize paint adhesion.
Paint should be of a type and quality suitable for application to metal.


FIRE LABELLED LEAD LINED HOLLOW METAL DOORS:

Fire labeled frames are available up to 8' - 0” wide x 7' - 2” high x 1-3/4” thick. Fire labeled frames require welded-in anchors in drywall applications.

Product: 1-1/2 hour or less Lead lined Door
Eighteen or sixteen (18/16) gauge with lead lined core, swinging flush design fire door for installation in singles or in pairs in 1-1/2 hour, and 3/4 hour locations when equipped with a listed single point latch or latches.

Hardware: Mortised and cylindrical latches, concealed and surface mounted vertical rod devices, mortised and surface mounted top and bottom bolts, mortised and surface mounted rim exit devices.

Maximum Size of Opening: Single - 4' - 0” wide x 7' - 2” high
Pair - 2/4' - 0” wide x 7' - 2” high, astragal required.

Lead Shielding: 1/16” (2 mm) lead sheet with steel stiffeners

Testing Standard: ASTM E152
CAN4 - S104
NFPA 252
UL 10(B)

Visionlites: Fire Rating - No Glass area Allowed

FIRE LABELLED LEAD LINED HOLLOW METAL FRAMES:

Product: Lead Lined - 1-1/2 hour
Eighteen, sixteen or fourteen (18/16/14) gauge pressed steel door frame for installation in steel or wood stud in drywall or masonry openings.
Frames are welded up.

Profile: Jamb Depths: 4-1/2” to 13”
Throat: 3-1/2” to 12”
Face: Jambs - 1-1/4” to 4”

Maximum Size of Opening: Single - 4' - 0” wide x 7' - 2” high
Double - 8' - 0” wide x 7' - 20” high, astragal required.

Lead Shielding: 1/16” (2 mm) or 1/8” 93.180 mm) lead sheet as per detailed sheet.

Testing Standard: Report

GENERAL INFORMATION FOR WOOD DOORS & FRAMES:

MarShield's offers a premium line of Lead-Lined Wood Doors & Hollow Metal Frames that are manufactured to have an equal appearance to architectural designed doors and frames. They are available in particle-core construction with matching rail and stile edges.
Standard construction lead-lined wood doors from MarShield™ are manufactured with lead under the door skins on both sides of the core (CoreClad ™). When shielding levels require more than 1/4" thick lead, bolted center lead construction is used. Center lead designs with an adhesive bonded assembly are an extra cost option at 1/4" lead thickness and below.

These designs allow all normal architectural hardware to be used to provide equal performance and appearance to unlined premium doors. Fire labels are available if required by the application. Doors can be furnished with 20-minute neutral pressure or positive pressure (Category A or B) labels. Special mineral core construction is available that permits 45- and 60-minute Category A positive pressure ratings, which is an industry first. This construction is available for CoreClad™ wood doors up to 4'0" x 8'0" and for pairs up to 8'0" x 8'0" with lead requirements up to 1/4".
Nominal door thickness is 1-3/4". Above 1/8" lead thickness, the door thickness will increase as the lead thickness increases.

Specific frame and hardware requirements exist in all cases for lead-lined wood doors. Door weights require hinges specially designed for use with these heavy lead-lined doors. MarShield recommends that door weight be reviewed with hinge and door frame suppliers, as well as the installer, prior to final hardware selection

TECHNICAL SPECIFICATIONS:

Lead Lined Wood Doors and Hollow Metal Frames - CoreClad™

Thickness: 1-3/4” to 1-15/16” (44.45 mm to 49 mm) - See Note # 1 below

Maximum Size: 4'- 0” x 8'- 0'. Sizes greater than 4080 are subject to mill acceptance. Pairs are available up to 8'- 0” x 8'- 0”

Faces: 3-Ply door skin. Wood veneer, reconstituted veneer, MDO or decorative laminates are all available.

Stiles: Laminated Strand Lumber with matching hardwood, 1-9/16” nom. Tectonite for 45/60 min. labeled doors.

Rails: Laminated Strand Lumber or mill option hardwood, 1-9/16” top, 2-1/2” bottom, nom. Tectonite for 45/60 min. labeled doors.

Adhesive: Type 2, Type 1 (waterproof) optional. - See Note # 2 below

Core: Solid core construction with LD-2 medium density particleboard and lead on either side of core. Mineral core for 60 min. doors.

Lead Thickness: 1/32” to 1/4” (0.79 mm to 6.35 mm). Lead thickness must be specified per shielding study recommendations.

Special Heavy Lead: For lead over _” thick in non labeled and 20 min doors, center lead construction with bolted core is used.

DOOR LITES:

Total area of the cutout cannot exceed 40 percent of door area (30” wide or 54” high maximum). Maximum for a clear lite is 1,296 square inches. Double glazing (lead glass/labeled wire glass) is required on 20-minute fire-rated doors. - See Note # 3 below

Machining: Factory fitting and machining is available. - See Note # 4 below

Finishes: Unfinished, for field finishing. Factory edge sealing is available.

Warranty: One year from date of shipment is standard. Other terms up to life of original Installation are available from MarShield.

Fire Rating: ITS-Warnock Hershey 20-minute, 45-minute, and 60-minute fire label for single doors up to 4'- 0” x 8'- 0” and pairs up to 8'- 0” x 8'- 0”. Neutral pressure and Cat. A positive Pressure available in both 20 min. and 45/60 min. Cat Balso available in 20 min.. - See Note # 5 below

NOTES:

1. Door thickness for lead above 1/8” varies as lead thickness varies. Consult with MarShield for actual lead thickness and any special frame requirements when this occurs.

Use of MarShield wood doors in exterior applications is not recommended and not warranted.

3. Minimum distant from the edge of any opening to the edge of any hardware cut for both labeled doors = 5”, for non-labeled = 3-1/4”. Consult local code authorities for safety and label requirements at the installation location concerning light openings.

4. Door weights are high due to lead content. Select hardware accordingly.

5. For both Category A (door installed) and Category B (Frame installed) systems.

6. For paired openings, a lead lined astragal must be used to prevent radiation leaks at the meeting stiles.