Installation Instructions
GENERAL REQUIREMENTS
Packaging, Storage and Protection Firestall Roof Deck comes to the job site covered in weather-resistant plastic, encapsulated units.
However, all materials should be stored at job site above ground on wooden pallets and covered by tarpaulins. Packaging material is not
intended for exterior job site protection.
Install in a dry condition only. Follow immediately with application of roofing felt and finish roofing.
Panel ends must have a minimum of 3/4" bearing at all times.
Panels must have 1/8" expansion and contraction space (running the full thickness of the panel) between all square end joints and 3/4" space
at all abutting shear and fire walls and gable ends.
For structures 150' or longer provide a 1-1/2" free expansion joint at 75' intervals. All connections at shear and fire walls and gable ends
should be allowed to float 3/4".
The NCFR face ply with V groove must face down towards the interior of the structure.
FIRESTALL ROOF DECK Panels are not recommended for use over swimming pools or similar areas.
NO MOISTURE FROM ANY SOURCE SHOULD BE SEALED INTO A ROOF SYSTEM. ROOFING FELTS,
INSULATION OR VAPOR RETARDERS THAT BECOME WET OR WATER-LADEN DURING
CONSTRUCTION SHOULD BE REMOVED AND REPLACED BEFORE THE APPLICATION OF FINISH
ROOFING MATERIALS. |
Do not use aluminum nails to install Roof Decking or to apply finish roofing. Do not attach aluminum flashing directly to Roof
Decking.
INTERIOR FINISH
Interior face of panel is NCFR Homasote® which may be finished with quality textured latex paint or other material such as wood paneling,
ceiling tile, etc.
Vapor retarders in general are based on many and varied factors. They shall or shall not be used depending on architectural or engineering
evaluation of existing conditions. This determination is not the responsibility of the Homasote Co.
In areas where a vapor retarder is required it is recommended that, as panels are applied to framing, a bead of caulking be placed in the
groove of each joint and along the panel ends. After roof is completed, interior surface should be painted with a vapor-retardant paint such as
Glidden INSUL-AID or equal.
APPLICATION TO STEEL
FRAME STRUCTURE
1. ATTACHMENT TO: Steel Bar Joists or I-Beams (Max. 1/4" Thick Flange)
A. |
Apply metal angle of wood nailer to steel bar joists at all eave and rake edges. |
B. |
Starting at low or outside edge of the roof, place the panel on the bar joists with groove edge toward
low portion of roof and tongue toward high portion. Fasten using Olympic #14-10 Heavy Duty All
Purpose Screws (or equal) applied 10" o.c. and back 1-1/2" from edges at each bar joist location (3
screws per joist). To install Olympic #14-10 Heavy Duty All Purpose Screws, pre-drill hole thru panel
into flange of the steel joist using 7/32" high speed drill bit. Place screw in pre-drilled hole and draw
fastener head flush with surface of panel; do not over drill. Fasten 12" o.c. at each framing location. |
Example: Framing 24", O.C.
C. |
Starting at low or outside edge of the roof, place the panel on the bar joists with groove edge toward
low portion of roof and tongue toward high portion. Fasten using Olympic #14-10 Heavy Duty All
Purpose Screws (or equal) applied 10" o.c. and back 1-1/2" from edges at each bar joist location (3
screws per joist). To install Olympic #14-10 Heavy Duty All Purpose Screws, pre-drill hole thru panel
into flange of the steel joist using 7/32" high speed drill bit. Place screw in pre-drilled hole and draw
fastener head flush with surface of panel; do not over drill. Fasten 12" o.c. at each framing location. |
D. |
Place subsequent panels to fit over the exposed tongue. Drive T&G edges tightly. Place panels in
straight alignment and at right angles to framing with all butt joints failing on framing members. Butt
joints must be staggered. Leave 1/8" space between all butt joints. |
E. |
All end joints shall be securely fastened to the joists. |
F. |
As Firestall® Panels are installed, cover immediately with roofing felt and finish roofing. |
